Jamie R Kerr1, Laurent Trembleau1, John M D Storey1, James L Wardell2, William T A Harrison1. 1. Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland. 2. Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland; Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far Manguinhos, 21041-250 Rio de Janeiro, RJ, Brazil.
Abstract
We describe the crystal structures of four indole derivatives with a phenyl ring at the 2-position and different carbonyl-linked substituents at the 3-position, namely 1-(2-phenyl-1H-indol-3-yl)ethanone, C16H13NO, (I), 2-cyclo-hexyl-1-(2-phenyl-1H-indol-3-yl)ethanone, C22H23NO, (II), 3,3-dimethyl-1-(2-phenyl-1H-indol-3-yl)butan-1-one, C20H21NO, (III), and 3-benzoyl-2-phenyl-1H-indole, C21H15NO, (IV). In each case, the carbonyl-group O atom lies close to the indole-ring plane and points towards the benzene ring. The dihedral angles between the indole ring system and 2-phenyl ring for these structures are clustered in a narrow range around 65°. The dominant inter-molecular inter-action in each case is an N-H⋯O hydrogen bond, which generates a C(6) chain, although each structure possesses a different crystal symmetry. The C(6) chains are consolidated by different (C-H⋯O, C-H⋯π and π-π stacking) weak inter-actions, with little consistency between the structures.
We describe the crystal structures of four indole derivatives with a phenyl ring at the 2-position and different carbonyl-linked substituents at the 3-position, namely 1-(2-phenyl-1H-indol-3-yl)ethanone, C16H13NO, (I), 2-cyclo-hexyl-1-(2-phenyl-1H-indol-3-yl)ethanone, C22H23NO, (II), 3,3-dimethyl-1-(2-phenyl-1H-indol-3-yl)butan-1-one, C20H21NO, (III), and 3-benzoyl-2-phenyl-1H-indole, C21H15NO, (IV). In each case, the carbonyl-group O atom lies close to the indole-ring plane and points towards the benzene ring. The dihedral angles between the indole ring system and 2-phenyl ring for these structures are clustered in a narrow range around 65°. The dominant inter-molecular inter-action in each case is an N-H⋯O hydrogen bond, which generates a C(6) chain, although each structure possesses a different crystal symmetry. The C(6) chains are consolidated by different (C-H⋯O, C-H⋯π and π-π stacking) weak inter-actions, with little consistency between the structures.
Indole derivatives are widely studied due to their utility in many areas, including in the dye, plastics, agriculture and perfumery fields and as vitamin supplements and flavour enhancers (Barden, 2011 ▸). However, it is in the pharmaceutical field that most interest has been shown. Indoles, both naturally occurring and man-made, have been found to have activity as antihypertensive drugs, antidepressants, antipsychotic agents, anti-emetics, analgesics, anti-asthmatics, antivirals, beta blockers, inhibitors of RNA polymerase-11, agonists for the cannabinoid receptor, non-nucleoside reverse transcriptase inhibitors, opioid agonists, sexual dysfunctional agents, etc. (França et al., 2014 ▸; Kaushik et al., 2013 ▸; Biswal et al., 2012 ▸; Sharma et al., 2010 ▸).As part of our ongoing synthetic and biological (Kerr, 2013 ▸) and structural studies in this area (Kerr et al., 2015 ▸) we report herein the crystal structures of four indole derivatives, namely: 1-(2-phenyl-1H-indol-3-yl)ethanone, C16H13NO, (I), 2-cyclohexyl-1-(2-phenyl-1H-indol-3-yl)ethanone, C22H23NO, (II), 3,3-dimethyl-1-(2-phenyl-1H-indol-3-yl)butan-1-one, C20H21NO, (III), and 3-benzoyl-2-phenyl-1H-indole, C21H15NO, (IV).As we discuss below, each structure features C(6) N—H⋯O hydrogen-bonded chains but with different crystal symmetries and weak reinforcing effects (C—H⋯O and C—H⋯π interactions and aromatic π–π stacking).
Structural commentary
The molecular structure of (I) is illustrated in Fig. 1 ▸. The dihedral angles between the mean plane of the indole ring system (r.m.s. deviation = 0.018 Å) and the C9/C10/O1 grouping and the C11-benzene ring are 8.35 (4) and 65.44 (4)°, respectively. The C6—C7—C9 and C8—C7—C9 bond angles are 124.57 (9) and 129.04 (10)°, respectively. O1 is syn to H5 [C6—C7—C9—O1 = −8.14 (16)°] and a short intramolecular contact occurs (H5⋯O1 = 2.54 Å), although we do not regard this as a bond. The C8—C7—C9—C10 torsion angle of −6.53 (16)° shows that C8 and C10 are almost eclipsed.
Figure 1
The molecular structure of (I), showing 50% displacement ellipsoids.
The molecular structure of (II) is shown in Fig. 2 ▸. The cyclohexyl ring adopts a normal chair conformation with the exocyclic C—C bond in an equatorial orientation. The dihedral angles between the indole ring system (r.m.s. deviation = 0.012 Å) and the C9/C10/O1 grouping and the C11-benzene ring are 21.17 (14) and 68.58 (8)°, respectively. The C6—C7—C9 and C8—C7—C9 bond angles are 124.3 (2) and 129.3 (2)°, respectively and the C8—C7—C9—C10 torsion angle is 16.2 (4)°. This is significantly larger than the equivalent value for (I), possibly due to steric interactions between the pendant ring systems: the twist about the C7—C9 bond in (II) is in the opposite sense to that in (I) [C6—C7—C9—O1 = 16.4 (3)°].
Figure 2
The molecular structure of (II), showing 50% displacement ellipsoids.
Fig. 3 ▸ shows the molecular structure of (III). The indole ring system (r.m.s. deviation = 0.007 Å) subtends dihedral angles of 15.60 (8) and 70.07 (3)° with the C9/C10/O1 grouping and the C15benzene ring, respectively. The C7—C9—C10—C11 torsion angle is 137.54 (9)°. and the C6—C7—C9 and C8—C7—C9 bond angles are 124.3 (2) and 129.3 (2)°, respectively. The C8—C7—C9—C10 torsion angle is −14.06 (15)°. The C6—C7—C9—O1 torsion angle of −13.96 (14)° shows that the C=O bond is slightly twisted away from the indole plane.
Figure 3
The molecular structure of (III), showing 50% displacement ellipsoids.
Compound (IV) crystallizes with two molecules in the asymmetric unit, as shown in Fig. 4 ▸. The molecules have similar but not identical conformations, as indicated by the r.m.s. overlay fit of 0.102 Å for the 23 non-hydrogen atoms. The main differences are a slightly different twist of the benzene ring at the 2-position and the fact that atoms C10 and C31 deviate slightly from the indole ring plane, but in opposite directions. This is reflected in the metrical data for the individual molecules: in the N1-species, the indole ring system (r.m.s. deviation = 0.009 Å) subtends dihedral angles of 7.32 (15), 64.66 (7), and 54.57 (7)° with the C9/C10/O1 group, the C10-ring and the C16-ring, respectively. Equivalent data for the N2-molecule (r.m.s. deviation for the indole ring system = 0.009 Å) are 9.76 (13) (C30/C31/O2), 60.92 (7) (C31-ring) and 56.97 (7)° (C37-ring). In the N1-molecule, the C6—C7—C9 and C8—C7—C9 bond angles are 123.5 (2) and 130.5 (2)°, respectively and the C8—C7—C9—C10 torsion angle is 7.1 (4)°. Equivalent data for the N2-molecule are C27—C28—C30 [124.0 (2)°], C29—C28—C30 [130.2 (3)°] and C29—C28—C30—C31 [–9.7 (4)°].
Figure 4
The molecular structure of (IV), showing 50% displacement ellipsoids. The N—H⋯O and C—H⋯π bonds are indicated by double-dashed lines.
Supramolecular features
In each structure, as might be expected, the dominant supramolecular motif is an N—H⋯O=Chydrogen bond, which generates a C(6) chain in every case. However, it is notable that the same chain motif is reinforced by different weak interactions in these structures, as described below and listed in Tables 1 ▸–4 ▸
▸
▸, for (I)–(IV), respectively.
Table 1
Hydrogen-bond geometry (Å, °) for (I)
D—H⋯A
D—H
H⋯A
D⋯A
D—H⋯A
N1—H1⋯O1i
0.898 (15)
2.018 (15)
2.8630 (12)
156.3 (12)
C12—H12⋯O1ii
0.95
2.53
3.3583 (14)
146
Symmetry codes: (i) ; (ii) .
Table 2
Hydrogen-bond geometry (Å, °) for (II)
Cg1 and Cg2 are the centroids of the N1/C1/C6–C8 ring and the C1–C6 ring, respectively.
D—H⋯A
D—H
H⋯A
D⋯A
D—H⋯A
N1—H1⋯O1i
0.91 (3)
1.94 (3)
2.806 (3)
158 (2)
C20—H20⋯Cg1ii
0.95
2.75
3.503 (3)
136
C21—H21⋯Cg2ii
0.95
2.61
3.437 (3)
146
Symmetry codes: (i) ; (ii) .
Table 3
Hydrogen-bond geometry (Å, °) for (III)
D—H⋯A
D—H
H⋯A
D⋯A
D—H⋯A
N1—H1⋯O1i
0.909 (13)
1.953 (13)
2.7950 (11)
153.3 (12)
Symmetry code: (i) .
Table 4
Hydrogen-bond geometry (Å, °) for (IV)
Cg8, Cg1, Cg7, Cg3 and Cg6 are the centroids of the C31–C36, N1/C1/C6–C8, C22–C27, C10–C15 and N2/C22/C27–C29 rings, respectively.
D—H⋯A
D—H
H⋯A
D⋯A
D—H⋯A
N1—H1⋯O2
0.88
1.91
2.786 (3)
176
N2—H2⋯O1i
0.88
1.90
2.775 (3)
171
C20—H20⋯O1ii
0.95
2.44
3.324 (3)
155
C41—H41⋯O2iii
0.95
2.37
3.239 (3)
152
C2—H2A⋯Cg8
0.95
2.81
3.715 (3)
158
C14—H14⋯Cg1ii
0.95
2.89
3.616 (3)
134
C17—H17⋯Cg7iv
0.95
2.62
3.508 (3)
156
C23—H23⋯Cg3i
0.95
2.72
3.608 (3)
156
C35—H35⋯Cg6iii
0.95
2.80
3.527 (3)
134
Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .
In the triclinic crystal of (I), the N1—H1⋯O1i [symmetry code: (i) x – 1, y, z] hydrogen bond links the molecules into [100] chains with the aforementioned C(6) chain motif in which adjacent molecules are related by translational symmetry. In addition, a C12—H12⋯O1ii [symmetry code: (ii) 1 – x, 1 – y, 1 – z] interaction is seen. By itself, this generates inversion dimers (Fig. 5 ▸) with an (14) motif: the twisting of the C11 ring relative to the indole skeleton appears to optimize the geometry for this interaction. Taken together, the N—H⋯O and C—H⋯O bonds in (I) lead to double chains propagating in [100] (Fig. 6 ▸). Inversion symmetry means that the sense of the N—H⋯O bonds are opposed in the two chains. Packing between the chains does not feature any directional interactions beyond typical van der Waals contacts and there is no aromatic π–π stacking in (I).
Figure 5
An inversion dimer in the crystal of (I) linked by a pair of C—H⋯O interactions (double-dashed lines). Symmetry code as in Table 1 ▸.
Figure 6
Partial packing diagram for (I), showing the formation of [100] double chains linked by N—H⋯O and C—H⋯O hydrogen bonds (double-dashed lines). Symmetry codes as in Table 1 ▸.
In the orthorhombic crystal of (II), the molecules are linked by N1—H1—O2i [symmetry code: (i) x + 1, y, z] hydrogen bonds into [100] chains (Fig. 7 ▸) characterized by a C(6) motif: adjacent molecules are again related by simple unit-cell translation. There is no reinforcement of the chain bonding in this case, but a pair of weak C—H⋯π interactions occur, which arise from adjacent C—H groupings of the pendant C17–C22 benzene ring to an adjacent indole ring (Fig. 8 ▸), and result in [010] chains. Taken together, the N—H⋯O and C—H⋯π bonds in (II) lead to (001) sheets.
Figure 7
Partial packing diagram for (II), showing the formation of [100] chains linked by N—H⋯O hydrogen bonds (double-dashed lines). Symmetry code as in Table 2 ▸.
Figure 8
Partial packing diagram for (II) showing the formation of [010] chains linked by pairs of C—H⋯π interactions. Symmetry code as in Table 2 ▸.
The extended structure in (III) conforms to rhombohedral (trigonal) crystal symmetry. Once again, adjacent molecules are linked into C(6) chains by N1—H1⋯O2i [symmetry code: (i) − x + y, − x, z − ] and symmetry-equivalent hydrogen bonds. The chain propagates in the [001] direction (Fig. 9 ▸) and the chain that incorporates the asymmetric molecule describes an anticlockwise helix, when viewed from above, about the 31 symmetry element at (, , z). The centrosymmetric space group leads, of course, to an equal number of clockwise and anticlockwise helices in the crystal. The chains are reinforced by aromatic π–π stacking between the pendant C15–C20 ring and the C1–C6 ring of the indole system with the same symmetry relation as the N—H⋯O hydrogen bond: the centroid separation is 3.7565 (8) Å and the inter-plane angle is 0.00 (6)°]. There appears to be no directional interactions between the chains beyond van der Waals contacts.
Figure 9
Partial packing diagram for (III), showing the formation of [001] chains linked by N—H⋯O hydrogen bonds (double-dashed lines) and reinforced by aromatic π–π stacking contacts. Symmetry code as in Table 3 ▸.
Compound (IV) crystallizes in a monoclinic space group. The C(6) chain motif (Fig. 10 ▸) is built up from alternating N1- and N2-molecules, with simple translation in the [100] direction generating the chain from the starting pair. In this case, the chain is consolidated by C—H⋯π interactions (involving both the N1 and N2 molecules) with the donorC—H group lying syn (i.e., C2—H2A and C23—H23, compare Fig. 4 ▸) to the N—H group in the indole ring system and the acceptor ring being the pendant phenyl group attached to the carbonyl group at the 3-position of the ring system (i.e., the C10 and C31 rings). Adjacent N1- and N2-molecules in the chain are ‘flipped’ by approximately 180° with respect to each other, so the chain has approximate local 21 symmetry. The packing for (IV) also features two C—H⋯O and three inter-chain C—H⋯π interactions, which generate a three-dimensional network.
Figure 10
Partial packing diagram for (IV), showing the formation of [100] chains of alternating A and B molecules linked by N—H⋯O hydrogen bonds (double-dashed lines) and reinforced by aromatic π–π stacking contacts. Symmetry code as in Table 4 ▸.
Database survey
A search of the Cambridge Structural Database (Groom & Allen, 2014 ▸) for indole derivatives with a phenyl substituent at the 2-position and a carbonyl group at the 3-position yielded five hits, namely: 3,5-dimethyl 2-(3,4-dimethoxyphenyl)indole-3,5-dicarboxylate dichloromethane solvate (refcode GUXMUI; Hwu et al., 2009 ▸), 2-(3-t-butyldimethylsiloxy-4-methoxyphenyl)-3-(3,4,5-trimethoxybenzoyl)-6-methoxyindole (IFIDEG; Hadimani et al., 2002 ▸), 1-(2-(2-methoxyphenyl)-1H-indol-3-yl)ethanone (MEYYOG; Coffman et al., 2013 ▸), (5-methyl-2-(4-methylphenyl)-1H-indol-3-yl)(phenyl)methanone (MOLDIC; Shi et al., 2014 ▸) and 1-(6-methyl-2-phenyl-1H-indol-3-yl)ethanone (SUHWUP; Huang et al., 2014 ▸). All of these structures feature C(6) chains linked by N—H⋯O hydrogen bonds, as seen in the compounds described here, which we may thus conclude is a consistent supramolecular motif in these phases.
Synthesis and crystallization
To prepare (I), 2-phenylindole (2.129 g, 11.0 mmol) was suspended in dry dichloromethane (45 ml) at 273 K and a 1.0 M solution of Et2AlCl in hexanes (16.5 ml, 16.5 mmol) was added slowly with stirring. A solution of benzoyl chloride (1.919 ml, 16.5 mmol) in dry dichloromethane (20 ml) was then added dropwise and the mixture was stirred at 273 K for a further 2 h. Water (30 ml) was added to quench the reaction then the solution was poured into 1.0 M HCl(aq) (100 ml) and the organic layer collected after shaking. The organic solution was washed with water (30 ml, twice) and saturated NaCl(aq) (30 ml) then dried over sodium sulfate, filtered and reduced under vacuum. Flash chromatography (1:4 EtOAc, hexanes) afforded 1-(2-phenyl-1H-indol-3-yl)ethanone as a colourless solid (2.257 g, 69%). Colourless slabs of (I) were recrystallized from ethanol solution at room temperature. δC(101 MHz; DMSO-d
6) 192.6 (Cq), 144.5 (Cq), 140.3 (Cq), 136.3 (CH), 132.0 (CH), 131.8 (Cq), 130.0 (CH), 129.5(CH), 128.9 (CH), 128.6 (Cq), 128.5 (Cq), 128.2 (CH), 123.3 (CH), 121.8 (CH), 121.0 (CH), 112.6 (CH) and 112.3 (Cq); δH(400 MHz; DMSO-d
6) 12.16 (1H, br s), 7.76 (1H, d, J 7.8), 7.71 (2H, d, J 8.4), 7.58–7.56 (3H, m), 7.49 (2H, t, J 6.9), 7.38–7.17 (4H, m), 7.13 (1H, t, J 7.2) and 7.09–7.04 (1H, m); R 0.20 (1:4 EtOAc, hexanes); m.p. 495–496 K; IR (KBr, cm−1) 3393, 3060, 2968, 1707, 1551, 1208, 1116, 891 and 745; HRMS (ESI) for C21H16NO [M + H]+ calculated 298.1233, found 298.1230.To prepare (II), a suspension of 2-phenylindole (567 mg, 2.93 mmol) in dry dichloromethane (20 ml) was cooled to 273 K over ice–water before the dropwise addition of a 1.0 M solution of Et2AlCl in hexane (4.4 ml, 4.40 mmol). After stirring for 30 min, a solution of cyclohexylacetyl chloride (675 ml, 4.40 mmol) in dry dichloromethane (20 ml) was added dropwise and stirring was resumed over ice–water for 2 h. Water (50 ml) was added slowly and after warming to room temperature, the mixture was added to a 1.0 M solution of HCl(aq) (50 ml). The organic phase was collected, washed with water (20 ml) and saturated NaCl(aq) (20 ml), dried (sodium sulfate), filtered and evaporated under reduced pressure. Flash chromatography (1:7 EtOAc, hexanes then 1:5 EtOAc,hexanes) gave 2-cyclohexyl-1-(2-phenyl-1H-indol-3-yl)ethanone as a yellow solid (92 mg, 10%). Colourless rods of (II) were recrystallized from ethanol solution at room temperature. δC(101 MHz; CDCl3) 198.4 (Cq), 143.5 (Cq), 135.1 (Cq), 132.9 (CH), 129.7 (CH), 129.5 (CH), 128.6 (Cq), 127.4 (Cq), 123.5 (CH), 122.5 (CH), 122.4 (CH), 115.8 (CH), 110.8 (Cq), 49.7 (CH2), 35.0 (CH2), 33.2 (CH), 26.2 (CH2) and 26.1 (CH2); δH(400 MHz; CDCl3) 8.51 (1H, br s), 8.27–8.25 (1H, m), 7.48–7.38 (5H, m), 7.32–7.28 (1H, m), 7.23–7.18 (2H, m), 2.30 (2H, d, J 6.8), 1.53–1.40 (5H, m), 1.19–0.93 (4H, m) and 0.66 (2H, q, J 10.7); R 0.23 (1:5 EtOAc, hexanes); m.p. 447 K; IR (KBr, cm−1) 3197, 3023, 2857, 1715, 1567, 1411, 1215, 1154 and 763; HRMS (ESI) for C22H24NO [M + H]+ calculated 318.1859, found 318.1855.To prepare (III), a 1.0 M solution of Et2AlCl in hexane (20 ml, 20 mmol) was added dropwise to a suspension of 2-phenylindole (2.536 g, 13.1 mmol) in dry dichloromethane (DCM) (56 ml) at 273 K. After 30 min stirring, a solution of 3,3-dimethylbutanoyl chloride (2.75 ml, 19.8 mmol) in dry DCM (55 ml) was added slowly and stirring was resumed for 2 h. Water (30 ml) was added and the solution was shaken with 1.0 M HCl(aq) (30 ml). The organic phase was collected, washed with water (20 ml) and saturated NaCl(aq) (20 ml), dried (sodium sulfate), filtered and evaporated under vacuum. Flash chromatography (5:1 DCM, hexanes) yielded 3,3-dimethyl-1-(2-phenyl-1H-indol-3-yl)butan-1-one as a cream-coloured solid (1.909 g, 50%). Colourless blocks of (III) were recrystallized from ethanol solution at room temperature. δC(101 MHz; CDCl3) 199.1(Cq), 142.9 (Cq), 135.2 (Cq), 132.9 (CH), 129.7 (CH), 129.5 (CH), 128.8 (Cq), 127.4 (Cq), 123.6 (CH), 122.4 (CH), 122.3 (CH), 117.3 (CH), 110.7 (Cq), 53.8 (CH2), 31.9 (Cq) and 29.9 (CH3); δH(400 MHz; CDCl3) 8.37 (1H, br s), 8.23–8.21 (1H, m), 7.48–7.19 (8H, m), 2.34 (2H, s) and 0.77 (9H, s); R 0.31 (5:1 DCM, hexanes); m.p. 441–443 K; IR (KBr, cm−1) 3186, 2998, 2954, 1710, 1454, 1411, 1202, 1150, 939 and 736; HRMS (ESI) for C20H22NO [M + H]+ calculated, 292.1702, found, 292.1697.To prepare (IV), 2-phenylindole (2.129 g, 11.0 mmol) was suspended in dry DCM (45 ml) at 273 K and a 1.0 M solution of Et2AlCl in hexanes (16.5 ml, 16.5 mmol) was added slowly with stirring. A solution of benzoyl chloride (1.919 ml, 16.5 mmol) in dry DCM (20 ml) was then added dropwise and the mixture was stirred at 273 K for a further 2 h. Water (30 ml) was added to quench the reaction then the solution was poured into 1.0 M HCl(aq) (100 ml) and the organic layer collected after shaking. The DCM solution was washed with water (30 ml, twice) and saturated NaCl(aq) (30 ml) then dried (sodium sulfate), filtered and reduced under vacuum. Flash chromatography (1:4 EtOAc, hexanes) afforded 3-benzoyl-2-phenyl-1H-indole as a colourless solid (2.257 g, 69%). Colourless blocks and slabs of (IV) were recrystallized from ethanol solution at room temperature. δC(101 MHz; DMSO-d
6) 192.6 (Cq), 144.5 (Cq), 140.3 (Cq), 136.3 (CH), 132.0 (CH), 131.8 (Cq), 130.0 (CH), 129.5 (CH), 128.9 (CH), 128.6 (Cq), 128.5 (Cq), 128.2 (CH), 123.3 (CH), 121.8 (CH), 121.0 (CH), 112.6 (CH) and 112.3 (Cq); δH(400 MHz; DMSO-d6) 12.16 (1H, br s), 7.76 (1H, d, J 7.8), 7.71 (2H, d, J 8.4), 7.58–7.56 (3H, m), 7.49 (2H, t, J 6.9), 7.38–7.17 (4H, m), 7.13 (1H, t, J 7.2) and 7.09–7.04 (1H, m); Rf 0.20 (1:4 EtOAc, hexanes); m.p. 495–496 K; IR (KBr, cm−1) 3393, 3060, 2968, 1707, 1551, 1208, 1116, 891 and 745; HRMS (ESI) for C21H16NO [M + H]+ calculated 298.1233, found 298.1230.
Refinement
Crystal data, data collection and structure refinement details for (I)–(IV) are summarized in Table 5 ▸. The N-bound H atoms were located in difference maps and their positions freely refined [for (IV) they were refined as riding atoms in their as-found relative positions]. The C-bound H atoms were geometrically placed (C—H = 0.93–0.98 Å) and refined as riding atoms. The constraint U
iso(H) = 1.2U
eq(carrier) or 1.5U
eq(methyl carrier) was applied in all cases. The methyl H atoms (if any) were allowed to rotate, but not to tip, to best fit the electron density. Compound (II) crystallizes in space group P212121 but the absolute structure was indeterminate in the present experiment. The crystal of (III) was found to contain highly disordered solvent molecules. Attempts to model the disorder were ineffective and the contribution to the scattering was removed with the SQUEEZE (Spek, 2015 ▸) option in PLATON (Spek, 2009 ▸), which revealed a solvent-accessible volume of 244.3 Å3 per unit cell and 19 ‘solvent’ electrons per unit cell. The stated formula, molecular mass, density, etc. for (III) in Table 5 ▸ do not take the solvent into account.
Table 5
Experimental details
(I)
(II)
(III)
(IV)
Crystal data
Chemical formula
C16H13NO
C22H23NO
C20H21NO
C21H15NO
Mr
235.27
317.41
291.38
297.34
Crystal system, space group
Triclinic, P
Orthorhombic, P212121
Trigonal, R
Monoclinic, P21/c
Temperature (K)
100
100
100
100
a, b, c (Å)
7.4136 (5), 7.5070 (5), 10.9519 (8)
7.3587 (5), 13.225 (1), 17.5445 (13)
23.3305 (16), 23.3305 (16), 15.3681 (11)
14.5065 (10), 11.7911 (9), 18.6961 (13)
α, β, γ (°)
101.274 (7), 92.218 (6), 97.893 (7)
90, 90, 90
90, 90, 120
90, 107.782 (2), 90
V (Å3)
590.74 (7)
1707.4 (2)
7244.3 (9)
3045.1 (4)
Z
2
4
18
8
Radiation type
Mo Kα
Mo Kα
Mo Kα
Mo Kα
μ (mm−1)
0.08
0.08
0.07
0.08
Crystal size (mm)
0.40 × 0.14 × 0.05
0.60 × 0.16 × 0.14
0.66 × 0.60 × 0.24
0.22 × 0.03 × 0.01
Data collection
Diffractometer
Rigaku Mercury CCD
Rigaku Mercury CCD
Rigaku Mercury CCD
Rigaku Mercury CCD
No. of measured, independent and observed [I > 2σ(I)] reflections
7753, 2703, 2432
8189, 3490, 2802
32188, 3690, 3070
20680, 6949, 4461
Rint
0.033
0.045
0.037
0.063
(sin θ/λ)max (Å−1)
0.650
0.650
0.649
0.649
Refinement
R[F2 > 2σ(F2)], wR(F2), S
0.040, 0.114, 1.07
0.051, 0.100, 1.21
0.036, 0.092, 1.08
0.076, 0.215, 1.05
No. of reflections
2703
3490
3690
6949
No. of parameters
167
221
205
415
H-atom treatment
H atoms treated by a mixture of independent and constrained refinement
H atoms treated by a mixture of independent and constrained refinement
H atoms treated by a mixture of independent and constrained refinement
H-atom parameters constrained
Δρmax, Δρmin (e Å−3)
0.37, −0.19
0.23, −0.22
0.29, −0.18
0.58, −0.23
Computer programs: CrystalClear (Rigaku, 2012 ▸), SHELXS97 and SHELXL97 (Sheldrick, 2008 ▸), ORTEP-3 for Windows (Farrugia, 2012 ▸) and publCIF (Westrip, 2010 ▸).
Crystal structure: contains datablock(s) I, II, III, IV, global. DOI: 10.1107/S2056989016002620/xu5883sup1.cifStructure factors: contains datablock(s) I. DOI: 10.1107/S2056989016002620/xu5883Isup2.hklStructure factors: contains datablock(s) II. DOI: 10.1107/S2056989016002620/xu5883IIsup3.hklStructure factors: contains datablock(s) III. DOI: 10.1107/S2056989016002620/xu5883IIIsup4.hklStructure factors: contains datablock(s) IV. DOI: 10.1107/S2056989016002620/xu5883IVsup5.hklClick here for additional data file.Supporting information file. DOI: 10.1107/S2056989016002620/xu5883Isup6.cmlClick here for additional data file.Supporting information file. DOI: 10.1107/S2056989016002620/xu5883IIsup7.cmlClick here for additional data file.Supporting information file. DOI: 10.1107/S2056989016002620/xu5883IIIsup8.cmlClick here for additional data file.Supporting information file. DOI: 10.1107/S2056989016002620/xu5883IVsup9.cmlCCDC references: 1453285, 1453284, 1453283, 1453282Additional supporting information: crystallographic information; 3D view; checkCIF report
C16H13NO
Z = 2
Mr = 235.27
F(000) = 248
Triclinic, P1
Dx = 1.323 Mg m−3
a = 7.4136 (5) Å
Mo Kα radiation, λ = 0.71075 Å
b = 7.5070 (5) Å
Cell parameters from 7537 reflections
c = 10.9519 (8) Å
θ = 2.8–27.5°
α = 101.274 (7)°
µ = 0.08 mm−1
β = 92.218 (6)°
T = 100 K
γ = 97.893 (7)°
Slab, colourless
V = 590.74 (7) Å3
0.40 × 0.14 × 0.05 mm
Rigaku Mercury CCD diffractometer
2432 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube
Rint = 0.033
Graphite monochromator
θmax = 27.5°, θmin = 2.8°
ω scans
h = −9→9
7753 measured reflections
k = −8→9
2703 independent reflections
l = −14→13
Refinement on F2
Primary atom site location: structure-invariant direct methods
Least-squares matrix: full
Secondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.040
Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.114
H atoms treated by a mixture of independent and constrained refinement
S = 1.07
w = 1/[σ2(Fo2) + (0.0655P)2 + 0.1376P] where P = (Fo2 + 2Fc2)/3
2703 reflections
(Δ/σ)max = 0.001
167 parameters
Δρmax = 0.37 e Å−3
0 restraints
Δρmin = −0.19 e Å−3
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell esds are taken
into account individually in the estimation of esds in distances, angles
and torsion angles; correlations between esds in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and
goodness of fit S are based on F2, conventional R-factors R are based
on F, with F set to zero for negative F2. The threshold expression of
F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for refinement. R-factors based
on F2 are statistically about twice as large as those based on F, and R-
factors based on ALL data will be even larger.
x
y
z
Uiso*/Ueq
C1
0.17290 (14)
0.14842 (14)
0.39273 (10)
0.0172 (2)
C2
0.05849 (15)
0.06773 (15)
0.28675 (10)
0.0202 (2)
H2
−0.0705
0.0566
0.2886
0.024*
C3
0.14074 (16)
0.00441 (15)
0.17853 (10)
0.0226 (2)
H3
0.0672
−0.0521
0.1045
0.027*
C4
0.33210 (16)
0.02277 (15)
0.17698 (10)
0.0226 (2)
H4
0.3854
−0.0186
0.1011
0.027*
C5
0.44441 (15)
0.09970 (14)
0.28344 (10)
0.0195 (2)
H5
0.5733
0.1100
0.2811
0.023*
C6
0.36453 (14)
0.16230 (14)
0.39494 (10)
0.0166 (2)
C7
0.43386 (13)
0.25110 (14)
0.52057 (9)
0.0165 (2)
C8
0.28168 (14)
0.28785 (14)
0.58734 (10)
0.0166 (2)
C9
0.62677 (14)
0.29478 (14)
0.56241 (10)
0.0180 (2)
C10
0.68827 (15)
0.41016 (16)
0.68934 (11)
0.0236 (2)
H10A
0.8136
0.4713
0.6881
0.035*
H10B
0.6838
0.3315
0.7512
0.035*
H10C
0.6075
0.5028
0.7114
0.035*
C11
0.26171 (13)
0.37691 (14)
0.71834 (10)
0.0173 (2)
C12
0.18773 (15)
0.53985 (15)
0.74297 (10)
0.0202 (2)
H12
0.1523
0.5941
0.6761
0.024*
C13
0.16559 (16)
0.62334 (16)
0.86536 (11)
0.0250 (3)
H13
0.1162
0.7352
0.8818
0.030*
C14
0.21514 (16)
0.54433 (17)
0.96377 (10)
0.0245 (3)
H14
0.1998
0.6020
1.0472
0.029*
C15
0.28710 (16)
0.38114 (17)
0.93984 (11)
0.0247 (3)
H15
0.3203
0.3262
1.0069
0.030*
C16
0.31064 (15)
0.29786 (15)
0.81775 (10)
0.0221 (2)
H16
0.3605
0.1862
0.8018
0.027*
N1
0.12741 (12)
0.22642 (12)
0.51028 (8)
0.0180 (2)
H1
0.011 (2)
0.2342 (19)
0.5287 (13)
0.022*
O1
0.74295 (10)
0.23746 (12)
0.49276 (7)
0.0234 (2)
U11
U22
U33
U12
U13
U23
C1
0.0171 (5)
0.0158 (5)
0.0194 (5)
0.0044 (4)
0.0017 (4)
0.0038 (4)
C2
0.0172 (5)
0.0212 (5)
0.0220 (5)
0.0045 (4)
−0.0013 (4)
0.0034 (4)
C3
0.0253 (6)
0.0220 (5)
0.0196 (5)
0.0059 (4)
−0.0027 (4)
0.0011 (4)
C4
0.0263 (6)
0.0214 (5)
0.0210 (5)
0.0080 (4)
0.0047 (4)
0.0026 (4)
C5
0.0187 (5)
0.0183 (5)
0.0228 (5)
0.0058 (4)
0.0043 (4)
0.0042 (4)
C6
0.0153 (5)
0.0148 (5)
0.0206 (5)
0.0036 (4)
0.0011 (4)
0.0048 (4)
C7
0.0152 (5)
0.0160 (5)
0.0190 (5)
0.0036 (4)
0.0021 (4)
0.0038 (4)
C8
0.0142 (5)
0.0157 (5)
0.0201 (5)
0.0026 (4)
0.0006 (4)
0.0040 (4)
C9
0.0152 (5)
0.0178 (5)
0.0226 (5)
0.0028 (4)
0.0020 (4)
0.0079 (4)
C10
0.0171 (5)
0.0259 (6)
0.0260 (6)
0.0003 (4)
−0.0027 (4)
0.0038 (4)
C11
0.0119 (4)
0.0192 (5)
0.0196 (5)
0.0004 (4)
0.0012 (4)
0.0025 (4)
C12
0.0195 (5)
0.0217 (5)
0.0201 (5)
0.0049 (4)
0.0011 (4)
0.0048 (4)
C13
0.0273 (6)
0.0244 (6)
0.0234 (6)
0.0089 (4)
0.0018 (4)
0.0018 (4)
C14
0.0239 (5)
0.0296 (6)
0.0180 (5)
0.0035 (5)
0.0014 (4)
0.0003 (4)
C15
0.0249 (6)
0.0287 (6)
0.0208 (5)
0.0027 (4)
−0.0032 (4)
0.0073 (4)
C16
0.0215 (5)
0.0205 (5)
0.0243 (5)
0.0049 (4)
−0.0017 (4)
0.0039 (4)
N1
0.0132 (4)
0.0215 (5)
0.0186 (4)
0.0035 (3)
0.0009 (3)
0.0020 (3)
O1
0.0144 (4)
0.0320 (5)
0.0256 (4)
0.0064 (3)
0.0041 (3)
0.0075 (3)
C1—N1
1.3809 (13)
C9—C10
1.5041 (15)
C1—C2
1.3933 (15)
C10—H10A
0.9800
C1—C6
1.4090 (14)
C10—H10B
0.9800
C2—C3
1.3849 (15)
C10—H10C
0.9800
C2—H2
0.9500
C11—C12
1.3916 (15)
C3—C4
1.4075 (16)
C11—C16
1.3965 (15)
C3—H3
0.9500
C12—C13
1.3903 (15)
C4—C5
1.3841 (16)
C12—H12
0.9500
C4—H4
0.9500
C13—C14
1.3884 (16)
C5—C6
1.4038 (14)
C13—H13
0.9500
C5—H5
0.9500
C14—C15
1.3852 (17)
C6—C7
1.4471 (14)
C14—H14
0.9500
C7—C8
1.3979 (13)
C15—C16
1.3893 (16)
C7—C9
1.4576 (14)
C15—H15
0.9500
C8—N1
1.3643 (14)
C16—H16
0.9500
C8—C11
1.4819 (14)
N1—H1
0.898 (15)
C9—O1
1.2383 (13)
N1—C1—C2
128.98 (10)
C9—C10—H10A
109.5
N1—C1—C6
107.83 (9)
C9—C10—H10B
109.5
C2—C1—C6
123.20 (10)
H10A—C10—H10B
109.5
C3—C2—C1
117.20 (10)
C9—C10—H10C
109.5
C3—C2—H2
121.4
H10A—C10—H10C
109.5
C1—C2—H2
121.4
H10B—C10—H10C
109.5
C2—C3—C4
120.75 (10)
C12—C11—C16
119.15 (10)
C2—C3—H3
119.6
C12—C11—C8
119.48 (9)
C4—C3—H3
119.6
C16—C11—C8
121.35 (10)
C5—C4—C3
121.56 (10)
C13—C12—C11
120.08 (10)
C5—C4—H4
119.2
C13—C12—H12
120.0
C3—C4—H4
119.2
C11—C12—H12
120.0
C4—C5—C6
118.86 (10)
C14—C13—C12
120.47 (11)
C4—C5—H5
120.6
C14—C13—H13
119.8
C6—C5—H5
120.6
C12—C13—H13
119.8
C5—C6—C1
118.36 (10)
C15—C14—C13
119.76 (10)
C5—C6—C7
134.81 (10)
C15—C14—H14
120.1
C1—C6—C7
106.77 (9)
C13—C14—H14
120.1
C8—C7—C6
106.36 (9)
C14—C15—C16
119.98 (10)
C8—C7—C9
129.04 (10)
C14—C15—H15
120.0
C6—C7—C9
124.57 (9)
C16—C15—H15
120.0
N1—C8—C7
109.13 (9)
C15—C16—C11
120.57 (10)
N1—C8—C11
118.22 (9)
C15—C16—H16
119.7
C7—C8—C11
132.65 (10)
C11—C16—H16
119.7
O1—C9—C7
119.96 (10)
C8—N1—C1
109.91 (9)
O1—C9—C10
119.00 (10)
C8—N1—H1
127.8 (9)
C7—C9—C10
121.05 (9)
C1—N1—H1
122.3 (9)
N1—C1—C2—C3
178.05 (10)
C6—C7—C9—O1
−8.14 (16)
C6—C1—C2—C3
−2.09 (16)
C8—C7—C9—C10
−6.53 (16)
C1—C2—C3—C4
−0.36 (16)
C6—C7—C9—C10
171.46 (10)
C2—C3—C4—C5
1.74 (17)
N1—C8—C11—C12
−63.28 (13)
C3—C4—C5—C6
−0.67 (16)
C7—C8—C11—C12
116.36 (13)
C4—C5—C6—C1
−1.67 (15)
N1—C8—C11—C16
114.80 (11)
C4—C5—C6—C7
−178.46 (11)
C7—C8—C11—C16
−65.56 (16)
N1—C1—C6—C5
−176.98 (9)
C16—C11—C12—C13
0.87 (16)
C2—C1—C6—C5
3.14 (16)
C8—C11—C12—C13
178.99 (10)
N1—C1—C6—C7
0.65 (11)
C11—C12—C13—C14
−0.65 (18)
C2—C1—C6—C7
−179.23 (9)
C12—C13—C14—C15
−0.02 (18)
C5—C6—C7—C8
176.50 (11)
C13—C14—C15—C16
0.46 (18)
C1—C6—C7—C8
−0.55 (11)
C14—C15—C16—C11
−0.23 (17)
C5—C6—C7—C9
−1.87 (18)
C12—C11—C16—C15
−0.43 (16)
C1—C6—C7—C9
−178.92 (9)
C8—C11—C16—C15
−178.52 (10)
C6—C7—C8—N1
0.26 (11)
C7—C8—N1—C1
0.15 (12)
C9—C7—C8—N1
178.53 (10)
C11—C8—N1—C1
179.87 (9)
C6—C7—C8—C11
−179.41 (11)
C2—C1—N1—C8
179.36 (10)
C9—C7—C8—C11
−1.14 (19)
C6—C1—N1—C8
−0.51 (12)
C8—C7—C9—O1
173.88 (10)
D—H···A
D—H
H···A
D···A
D—H···A
N1—H1···O1i
0.898 (15)
2.018 (15)
2.8630 (12)
156.3 (12)
C12—H12···O1ii
0.95
2.53
3.3583 (14)
146
C22H23NO
Dx = 1.235 Mg m−3
Mr = 317.41
Mo Kα radiation, λ = 0.71075 Å
Orthorhombic, P212121
Cell parameters from 4889 reflections
a = 7.3587 (5) Å
θ = 1.9–27.5°
b = 13.225 (1) Å
µ = 0.08 mm−1
c = 17.5445 (13) Å
T = 100 K
V = 1707.4 (2) Å3
Rod, colourless
Z = 4
0.60 × 0.16 × 0.14 mm
F(000) = 680
Rigaku Mercury CCD diffractometer
2802 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube
Rint = 0.045
Graphite monochromator
θmax = 27.5°, θmin = 2.8°
ω scans
h = −9→9
8189 measured reflections
k = −17→17
3490 independent reflections
l = −22→18
Refinement on F2
Secondary atom site location: difference Fourier map
Least-squares matrix: full
Hydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.051
H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.100
w = 1/[σ2(Fo2) + (0.0111P)2 + 0.987P] where P = (Fo2 + 2Fc2)/3
Primary atom site location: structure-invariant direct methods
Extinction coefficient: 0.0029 (5)
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell esds are taken
into account individually in the estimation of esds in distances, angles
and torsion angles; correlations between esds in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and
goodness of fit S are based on F2, conventional R-factors R are based
on F, with F set to zero for negative F2. The threshold expression of
F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for refinement. R-factors based
on F2 are statistically about twice as large as those based on F, and R-
factors based on ALL data will be even larger.
x
y
z
Uiso*/Ueq
C1
0.5113 (3)
0.83148 (17)
0.07278 (14)
0.0154 (5)
C2
0.6084 (3)
0.91323 (18)
0.04474 (14)
0.0176 (5)
H2
0.7374
0.9150
0.0468
0.021*
C3
0.5096 (3)
0.99203 (18)
0.01371 (13)
0.0214 (6)
H3
0.5715
1.0495
−0.0059
0.026*
C4
0.3199 (4)
0.98840 (19)
0.01069 (15)
0.0223 (6)
H4
0.2557
1.0431
−0.0118
0.027*
C5
0.2234 (3)
0.90765 (19)
0.03949 (14)
0.0185 (5)
H5
0.0944
0.9067
0.0377
0.022*
C6
0.3208 (3)
0.82674 (17)
0.07151 (14)
0.0143 (5)
C7
0.2707 (3)
0.73248 (17)
0.10822 (13)
0.0154 (5)
C8
0.4327 (4)
0.68492 (16)
0.12730 (13)
0.0162 (5)
C9
0.0841 (4)
0.70348 (16)
0.12692 (13)
0.0161 (5)
C10
0.0489 (3)
0.62762 (16)
0.18942 (13)
0.0184 (5)
H10A
0.1269
0.5675
0.1815
0.022*
H10B
−0.0795
0.6054
0.1872
0.022*
C11
0.0883 (4)
0.67346 (16)
0.26852 (13)
0.0179 (5)
H11
0.2197
0.6927
0.2698
0.021*
C12
0.0567 (4)
0.59550 (18)
0.33148 (14)
0.0232 (5)
H12A
−0.0704
0.5712
0.3290
0.028*
H12B
0.1378
0.5368
0.3232
0.028*
C13
0.0930 (4)
0.64022 (19)
0.41026 (15)
0.0283 (6)
H13A
0.0655
0.5890
0.4497
0.034*
H13B
0.2231
0.6583
0.4146
0.034*
C14
−0.0226 (4)
0.7338 (2)
0.42403 (15)
0.0314 (7)
H14A
0.0074
0.7630
0.4745
0.038*
H14B
−0.1527
0.7148
0.4243
0.038*
C15
0.0112 (4)
0.81255 (19)
0.36219 (14)
0.0261 (6)
H15A
−0.0699
0.8712
0.3706
0.031*
H15B
0.1384
0.8366
0.3656
0.031*
C16
−0.0229 (4)
0.76918 (18)
0.28315 (13)
0.0217 (6)
H16A
0.0086
0.8206
0.2444
0.026*
H16B
−0.1537
0.7533
0.2777
0.026*
C17
0.4700 (3)
0.58519 (17)
0.16354 (13)
0.0154 (5)
C18
0.4340 (3)
0.49591 (17)
0.12458 (13)
0.0195 (5)
H18
0.3862
0.4983
0.0743
0.023*
C19
0.4678 (4)
0.40310 (18)
0.15890 (15)
0.0246 (6)
H19
0.4434
0.3422
0.1321
0.030*
C20
0.5369 (4)
0.39947 (18)
0.23207 (15)
0.0249 (6)
H20
0.5589
0.3360
0.2557
0.030*
C21
0.5741 (4)
0.48777 (18)
0.27102 (15)
0.0241 (6)
H21
0.6214
0.4850
0.3214
0.029*
C22
0.5425 (3)
0.58032 (17)
0.23671 (14)
0.0192 (5)
H22
0.5704
0.6409
0.2633
0.023*
N1
0.5754 (3)
0.74414 (14)
0.10656 (11)
0.0155 (4)
H1
0.696 (4)
0.7293 (18)
0.1088 (15)
0.019*
O1
−0.0440 (2)
0.74797 (12)
0.09706 (9)
0.0198 (4)
U11
U22
U33
U12
U13
U23
C1
0.0158 (13)
0.0173 (11)
0.0132 (12)
0.0024 (9)
−0.0004 (10)
−0.0001 (9)
C2
0.0132 (13)
0.0211 (12)
0.0185 (12)
−0.0014 (11)
0.0018 (10)
−0.0006 (10)
C3
0.0264 (15)
0.0184 (12)
0.0194 (13)
−0.0044 (11)
0.0002 (11)
0.0019 (11)
C4
0.0265 (14)
0.0192 (13)
0.0212 (15)
0.0042 (11)
−0.0032 (12)
0.0041 (12)
C5
0.0168 (13)
0.0200 (12)
0.0186 (12)
0.0017 (11)
−0.0021 (11)
0.0000 (11)
C6
0.0160 (13)
0.0160 (12)
0.0108 (12)
−0.0011 (9)
−0.0002 (10)
−0.0037 (10)
C7
0.0150 (12)
0.0182 (11)
0.0131 (12)
−0.0009 (10)
0.0002 (11)
−0.0016 (10)
C8
0.0159 (13)
0.0192 (11)
0.0135 (11)
−0.0010 (10)
0.0021 (11)
−0.0024 (9)
C9
0.0155 (12)
0.0151 (11)
0.0176 (12)
0.0026 (10)
−0.0025 (12)
−0.0056 (9)
C10
0.0134 (13)
0.0176 (11)
0.0240 (13)
−0.0012 (10)
0.0015 (11)
−0.0007 (10)
C11
0.0141 (12)
0.0201 (11)
0.0195 (12)
−0.0003 (10)
−0.0008 (12)
0.0003 (9)
C12
0.0236 (14)
0.0231 (12)
0.0229 (12)
0.0020 (12)
0.0015 (12)
0.0032 (11)
C13
0.0321 (16)
0.0327 (14)
0.0200 (13)
0.0050 (13)
0.0012 (14)
0.0049 (11)
C14
0.0389 (17)
0.0345 (15)
0.0210 (13)
0.0051 (13)
0.0030 (13)
−0.0030 (12)
C15
0.0314 (16)
0.0236 (12)
0.0234 (14)
0.0047 (11)
0.0029 (12)
−0.0040 (10)
C16
0.0247 (14)
0.0219 (12)
0.0186 (12)
0.0021 (11)
0.0019 (11)
−0.0004 (10)
C17
0.0087 (11)
0.0181 (11)
0.0194 (11)
0.0010 (10)
0.0025 (10)
0.0036 (10)
C18
0.0179 (13)
0.0211 (11)
0.0195 (12)
0.0005 (11)
0.0010 (11)
−0.0005 (10)
C19
0.0262 (14)
0.0178 (11)
0.0298 (14)
−0.0004 (11)
0.0046 (12)
−0.0015 (11)
C20
0.0238 (14)
0.0200 (12)
0.0309 (14)
0.0039 (11)
0.0020 (13)
0.0097 (11)
C21
0.0192 (13)
0.0294 (13)
0.0237 (12)
−0.0003 (12)
−0.0047 (12)
0.0089 (11)
C22
0.0172 (13)
0.0193 (11)
0.0212 (12)
−0.0031 (10)
−0.0013 (11)
0.0024 (10)
N1
0.0095 (10)
0.0176 (9)
0.0195 (10)
−0.0007 (9)
0.0004 (9)
0.0004 (8)
O1
0.0134 (9)
0.0241 (8)
0.0220 (9)
0.0012 (8)
−0.0004 (7)
−0.0007 (7)
C1—N1
1.381 (3)
C12—H12A
0.9900
C1—C2
1.386 (3)
C12—H12B
0.9900
C1—C6
1.403 (3)
C13—C14
1.521 (4)
C2—C3
1.383 (3)
C13—H13A
0.9900
C2—H2
0.9500
C13—H13B
0.9900
C3—C4
1.398 (3)
C14—C15
1.524 (4)
C3—H3
0.9500
C14—H14A
0.9900
C4—C5
1.378 (3)
C14—H14B
0.9900
C4—H4
0.9500
C15—C16
1.522 (3)
C5—C6
1.405 (3)
C15—H15A
0.9900
C5—H5
0.9500
C15—H15B
0.9900
C6—C7
1.451 (3)
C16—H16A
0.9900
C7—C8
1.389 (3)
C16—H16B
0.9900
C7—C9
1.463 (3)
C17—C18
1.390 (3)
C8—N1
1.360 (3)
C17—C22
1.392 (3)
C8—C17
1.490 (3)
C18—C19
1.389 (3)
C9—O1
1.229 (3)
C18—H18
0.9500
C9—C10
1.509 (3)
C19—C20
1.382 (4)
C10—C11
1.542 (3)
C19—H19
0.9500
C10—H10A
0.9900
C20—C21
1.380 (3)
C10—H10B
0.9900
C20—H20
0.9500
C11—C12
1.529 (3)
C21—C22
1.384 (3)
C11—C16
1.529 (3)
C21—H21
0.9500
C11—H11
1.0000
C22—H22
0.9500
C12—C13
1.527 (3)
N1—H1
0.91 (3)
N1—C1—C2
129.0 (2)
C14—C13—C12
111.2 (2)
N1—C1—C6
108.1 (2)
C14—C13—H13A
109.4
C2—C1—C6
123.0 (2)
C12—C13—H13A
109.4
C3—C2—C1
117.2 (2)
C14—C13—H13B
109.4
C3—C2—H2
121.4
C12—C13—H13B
109.4
C1—C2—H2
121.4
H13A—C13—H13B
108.0
C2—C3—C4
121.0 (2)
C13—C14—C15
110.6 (2)
C2—C3—H3
119.5
C13—C14—H14A
109.5
C4—C3—H3
119.5
C15—C14—H14A
109.5
C5—C4—C3
121.8 (2)
C13—C14—H14B
109.5
C5—C4—H4
119.1
C15—C14—H14B
109.5
C3—C4—H4
119.1
H14A—C14—H14B
108.1
C4—C5—C6
118.3 (2)
C16—C15—C14
111.4 (2)
C4—C5—H5
120.9
C16—C15—H15A
109.4
C6—C5—H5
120.9
C14—C15—H15A
109.4
C1—C6—C5
118.8 (2)
C16—C15—H15B
109.4
C1—C6—C7
106.6 (2)
C14—C15—H15B
109.4
C5—C6—C7
134.6 (2)
H15A—C15—H15B
108.0
C8—C7—C6
106.1 (2)
C15—C16—C11
112.1 (2)
C8—C7—C9
129.3 (2)
C15—C16—H16A
109.2
C6—C7—C9
124.3 (2)
C11—C16—H16A
109.2
N1—C8—C7
109.72 (19)
C15—C16—H16B
109.2
N1—C8—C17
118.8 (2)
C11—C16—H16B
109.2
C7—C8—C17
131.5 (2)
H16A—C16—H16B
107.9
O1—C9—C7
119.9 (2)
C18—C17—C22
119.2 (2)
O1—C9—C10
119.8 (2)
C18—C17—C8
120.5 (2)
C7—C9—C10
119.9 (2)
C22—C17—C8
120.4 (2)
C9—C10—C11
111.12 (18)
C19—C18—C17
120.2 (2)
C9—C10—H10A
109.4
C19—C18—H18
119.9
C11—C10—H10A
109.4
C17—C18—H18
119.9
C9—C10—H10B
109.4
C20—C19—C18
119.9 (2)
C11—C10—H10B
109.4
C20—C19—H19
120.0
H10A—C10—H10B
108.0
C18—C19—H19
120.0
C12—C11—C16
110.8 (2)
C21—C20—C19
120.2 (2)
C12—C11—C10
110.88 (18)
C21—C20—H20
119.9
C16—C11—C10
112.1 (2)
C19—C20—H20
119.9
C12—C11—H11
107.6
C20—C21—C22
120.0 (2)
C16—C11—H11
107.6
C20—C21—H21
120.0
C10—C11—H11
107.6
C22—C21—H21
120.0
C13—C12—C11
111.5 (2)
C21—C22—C17
120.4 (2)
C13—C12—H12A
109.3
C21—C22—H22
119.8
C11—C12—H12A
109.3
C17—C22—H22
119.8
C13—C12—H12B
109.3
C8—N1—C1
109.46 (19)
C11—C12—H12B
109.3
C8—N1—H1
128.1 (16)
H12A—C12—H12B
108.0
C1—N1—H1
122.2 (16)
N1—C1—C2—C3
−179.7 (2)
C9—C10—C11—C16
56.9 (3)
C6—C1—C2—C3
−0.7 (4)
C16—C11—C12—C13
−54.2 (3)
C1—C2—C3—C4
−0.3 (4)
C10—C11—C12—C13
−179.3 (2)
C2—C3—C4—C5
1.2 (4)
C11—C12—C13—C14
56.3 (3)
C3—C4—C5—C6
−1.0 (4)
C12—C13—C14—C15
−56.8 (3)
N1—C1—C6—C5
−179.9 (2)
C13—C14—C15—C16
56.0 (3)
C2—C1—C6—C5
0.9 (4)
C14—C15—C16—C11
−54.9 (3)
N1—C1—C6—C7
1.4 (3)
C12—C11—C16—C15
53.6 (3)
C2—C1—C6—C7
−177.8 (2)
C10—C11—C16—C15
178.1 (2)
C4—C5—C6—C1
0.0 (4)
N1—C8—C17—C18
−110.2 (3)
C4—C5—C6—C7
178.2 (3)
C7—C8—C17—C18
68.9 (3)
C1—C6—C7—C8
−1.7 (3)
N1—C8—C17—C22
69.4 (3)
C5—C6—C7—C8
179.9 (3)
C7—C8—C17—C22
−111.5 (3)
C1—C6—C7—C9
172.4 (2)
C22—C17—C18—C19
0.9 (4)
C5—C6—C7—C9
−5.9 (4)
C8—C17—C18—C19
−179.5 (2)
C6—C7—C8—N1
1.4 (2)
C17—C18—C19—C20
0.2 (4)
C9—C7—C8—N1
−172.4 (2)
C18—C19—C20—C21
−0.6 (4)
C6—C7—C8—C17
−177.7 (2)
C19—C20—C21—C22
−0.1 (4)
C9—C7—C8—C17
8.5 (4)
C20—C21—C22—C17
1.2 (4)
C8—C7—C9—O1
−170.9 (2)
C18—C17—C22—C21
−1.6 (3)
C6—C7—C9—O1
16.4 (3)
C8—C17—C22—C21
178.8 (2)
C8—C7—C9—C10
16.2 (4)
C7—C8—N1—C1
−0.5 (2)
C6—C7—C9—C10
−156.5 (2)
C17—C8—N1—C1
178.7 (2)
O1—C9—C10—C11
−101.5 (2)
C2—C1—N1—C8
178.5 (2)
C7—C9—C10—C11
71.4 (3)
C6—C1—N1—C8
−0.6 (3)
C9—C10—C11—C12
−178.7 (2)
D—H···A
D—H
H···A
D···A
D—H···A
N1—H1···O1i
0.91 (3)
1.94 (3)
2.806 (3)
158 (2)
C20—H20···Cg1ii
0.95
2.75
3.503 (3)
136
C21—H21···Cg2ii
0.95
2.61
3.437 (3)
146
C20H21NO
Dx = 1.202 Mg m−3
Mr = 291.38
Mo Kα radiation, λ = 0.71073 Å
Trigonal, R3
Cell parameters from 21024 reflections
a = 23.3305 (16) Å
θ = 1.7–27.5°
c = 15.3681 (11) Å
µ = 0.07 mm−1
V = 7244.3 (9) Å3
T = 100 K
Z = 18
Chunk, colourless
F(000) = 2808
0.66 × 0.60 × 0.24 mm
Rigaku Mercury CCD diffractometer
3070 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube
Rint = 0.037
Graphite monochromator
θmax = 27.5°, θmin = 1.7°
ω scans
h = −30→30
32188 measured reflections
k = −30→30
3690 independent reflections
l = −19→19
Refinement on F2
Primary atom site location: structure-invariant direct methods
Least-squares matrix: full
Secondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.036
Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.092
H atoms treated by a mixture of independent and constrained refinement
S = 1.08
w = 1/[σ2(Fo2) + (0.0448P)2 + 4.7609P] where P = (Fo2 + 2Fc2)/3
3690 reflections
(Δ/σ)max < 0.001
205 parameters
Δρmax = 0.28 e Å−3
0 restraints
Δρmin = −0.18 e Å−3
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell esds are taken
into account individually in the estimation of esds in distances, angles
and torsion angles; correlations between esds in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and
goodness of fit S are based on F2, conventional R-factors R are based
on F, with F set to zero for negative F2. The threshold expression of
F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for refinement. R-factors based
on F2 are statistically about twice as large as those based on F, and R-
factors based on ALL data will be even larger.
x
y
z
Uiso*/Ueq
C1
0.31613 (5)
0.41861 (5)
0.13603 (6)
0.0197 (2)
C2
0.34735 (6)
0.48614 (5)
0.15385 (7)
0.0250 (2)
H2
0.3771
0.5181
0.1136
0.030*
C3
0.33301 (6)
0.50441 (5)
0.23285 (7)
0.0265 (2)
H3
0.3538
0.5500
0.2479
0.032*
C4
0.28843 (6)
0.45692 (6)
0.29109 (7)
0.0245 (2)
H4
0.2790
0.4710
0.3445
0.029*
C5
0.25777 (5)
0.38987 (5)
0.27288 (7)
0.0210 (2)
H5
0.2275
0.3582
0.3130
0.025*
C6
0.27233 (5)
0.36965 (5)
0.19382 (6)
0.0178 (2)
C7
0.25090 (5)
0.30630 (5)
0.15169 (6)
0.0172 (2)
C8
0.28358 (5)
0.32044 (5)
0.07156 (6)
0.0179 (2)
C9
0.20194 (5)
0.24318 (5)
0.18833 (6)
0.0178 (2)
C10
0.16701 (5)
0.18172 (5)
0.13248 (7)
0.0208 (2)
H10A
0.1919
0.1902
0.0773
0.025*
H10B
0.1226
0.1745
0.1178
0.025*
C11
0.15854 (5)
0.11708 (5)
0.17269 (7)
0.0232 (2)
C12
0.10683 (6)
0.09101 (6)
0.24526 (8)
0.0325 (3)
H12A
0.1219
0.1231
0.2931
0.049*
H12B
0.1007
0.0487
0.2666
0.049*
H12C
0.0647
0.0845
0.2226
0.049*
C13
0.13580 (7)
0.06571 (6)
0.09973 (8)
0.0365 (3)
H13A
0.0935
0.0581
0.0764
0.055*
H13B
0.1303
0.0241
0.1228
0.055*
H13C
0.1690
0.0820
0.0533
0.055*
C14
0.22444 (6)
0.12844 (6)
0.20931 (9)
0.0337 (3)
H14A
0.2392
0.1614
0.2561
0.051*
H14B
0.2577
0.1445
0.1629
0.051*
H14C
0.2186
0.0867
0.2324
0.051*
C15
0.28615 (5)
0.27820 (5)
0.00135 (6)
0.0181 (2)
C16
0.25997 (5)
0.27699 (5)
−0.08041 (7)
0.0214 (2)
H16
0.2385
0.3019
−0.0907
0.026*
C17
0.26503 (5)
0.23952 (5)
−0.14706 (7)
0.0234 (2)
H17
0.2464
0.2383
−0.2025
0.028*
C18
0.29714 (5)
0.20399 (5)
−0.13300 (7)
0.0233 (2)
H18
0.3011
0.1789
−0.1789
0.028*
C19
0.32356 (5)
0.20505 (5)
−0.05188 (7)
0.0252 (2)
H19
0.3456
0.1807
−0.0421
0.030*
C20
0.31782 (5)
0.24169 (5)
0.01498 (7)
0.0227 (2)
H20
0.3356
0.2420
0.0707
0.027*
N1
0.32172 (4)
0.38711 (4)
0.06303 (6)
0.02026 (19)
H1
0.3485 (6)
0.4089 (6)
0.0173 (9)
0.024*
O1
0.18597 (4)
0.24055 (4)
0.26571 (5)
0.02217 (17)
U11
U22
U33
U12
U13
U23
C1
0.0212 (5)
0.0223 (5)
0.0178 (5)
0.0125 (4)
−0.0013 (4)
−0.0009 (4)
C2
0.0272 (5)
0.0206 (5)
0.0253 (5)
0.0105 (4)
0.0009 (4)
0.0013 (4)
C3
0.0311 (6)
0.0216 (5)
0.0282 (6)
0.0140 (5)
−0.0047 (5)
−0.0055 (4)
C4
0.0299 (6)
0.0291 (5)
0.0200 (5)
0.0190 (5)
−0.0036 (4)
−0.0052 (4)
C5
0.0224 (5)
0.0258 (5)
0.0180 (5)
0.0144 (4)
−0.0007 (4)
−0.0004 (4)
C6
0.0176 (4)
0.0205 (5)
0.0172 (5)
0.0111 (4)
−0.0026 (4)
−0.0002 (4)
C7
0.0179 (4)
0.0203 (5)
0.0157 (4)
0.0112 (4)
−0.0015 (4)
−0.0005 (4)
C8
0.0180 (4)
0.0199 (5)
0.0171 (5)
0.0105 (4)
−0.0023 (4)
0.0004 (4)
C9
0.0174 (4)
0.0213 (5)
0.0171 (5)
0.0115 (4)
−0.0016 (4)
0.0013 (4)
C10
0.0206 (5)
0.0209 (5)
0.0184 (5)
0.0086 (4)
−0.0014 (4)
0.0002 (4)
C11
0.0230 (5)
0.0193 (5)
0.0260 (5)
0.0095 (4)
−0.0021 (4)
−0.0005 (4)
C12
0.0329 (6)
0.0249 (6)
0.0340 (6)
0.0102 (5)
0.0048 (5)
0.0063 (5)
C13
0.0441 (7)
0.0243 (6)
0.0364 (7)
0.0135 (5)
−0.0037 (6)
−0.0070 (5)
C14
0.0314 (6)
0.0284 (6)
0.0465 (7)
0.0189 (5)
−0.0068 (5)
−0.0007 (5)
C15
0.0169 (4)
0.0177 (4)
0.0169 (5)
0.0067 (4)
0.0020 (4)
0.0007 (4)
C16
0.0234 (5)
0.0229 (5)
0.0198 (5)
0.0130 (4)
−0.0008 (4)
0.0003 (4)
C17
0.0272 (5)
0.0243 (5)
0.0170 (5)
0.0116 (4)
−0.0020 (4)
−0.0010 (4)
C18
0.0260 (5)
0.0202 (5)
0.0215 (5)
0.0099 (4)
0.0038 (4)
−0.0029 (4)
C19
0.0283 (5)
0.0252 (5)
0.0274 (6)
0.0174 (5)
−0.0003 (4)
−0.0013 (4)
C20
0.0250 (5)
0.0250 (5)
0.0199 (5)
0.0140 (4)
−0.0030 (4)
−0.0010 (4)
N1
0.0230 (4)
0.0193 (4)
0.0173 (4)
0.0098 (4)
0.0025 (3)
0.0012 (3)
O1
0.0246 (4)
0.0240 (4)
0.0166 (3)
0.0112 (3)
0.0012 (3)
0.0021 (3)
C1—N1
1.3825 (13)
C11—C14
1.5308 (15)
C1—C2
1.3928 (15)
C12—H12A
0.9800
C1—C6
1.4038 (14)
C12—H12B
0.9800
C2—C3
1.3820 (16)
C12—H12C
0.9800
C2—H2
0.9500
C13—H13A
0.9800
C3—C4
1.3994 (16)
C13—H13B
0.9800
C3—H3
0.9500
C13—H13C
0.9800
C4—C5
1.3849 (15)
C14—H14A
0.9800
C4—H4
0.9500
C14—H14B
0.9800
C5—C6
1.4052 (14)
C14—H14C
0.9800
C5—H5
0.9500
C15—C16
1.3912 (14)
C6—C7
1.4541 (13)
C15—C20
1.3945 (14)
C7—C8
1.3983 (14)
C16—C17
1.3894 (15)
C7—C9
1.4520 (14)
C16—H16
0.9500
C8—N1
1.3580 (13)
C17—C18
1.3841 (15)
C8—C15
1.4827 (14)
C17—H17
0.9500
C9—O1
1.2385 (12)
C18—C19
1.3855 (15)
C9—C10
1.5128 (14)
C18—H18
0.9500
C10—C11
1.5485 (14)
C19—C20
1.3852 (15)
C10—H10A
0.9900
C19—H19
0.9500
C10—H10B
0.9900
C20—H20
0.9500
C11—C12
1.5282 (16)
N1—H1
0.909 (13)
C11—C13
1.5294 (15)
N1—C1—C2
128.74 (10)
C11—C12—H12A
109.5
N1—C1—C6
107.73 (9)
C11—C12—H12B
109.5
C2—C1—C6
123.52 (9)
H12A—C12—H12B
109.5
C3—C2—C1
116.83 (10)
C11—C12—H12C
109.5
C3—C2—H2
121.6
H12A—C12—H12C
109.5
C1—C2—H2
121.6
H12B—C12—H12C
109.5
C2—C3—C4
121.09 (10)
C11—C13—H13A
109.5
C2—C3—H3
119.5
C11—C13—H13B
109.5
C4—C3—H3
119.5
H13A—C13—H13B
109.5
C5—C4—C3
121.65 (10)
C11—C13—H13C
109.5
C5—C4—H4
119.2
H13A—C13—H13C
109.5
C3—C4—H4
119.2
H13B—C13—H13C
109.5
C4—C5—C6
118.61 (10)
C11—C14—H14A
109.5
C4—C5—H5
120.7
C11—C14—H14B
109.5
C6—C5—H5
120.7
H14A—C14—H14B
109.5
C1—C6—C5
118.27 (9)
C11—C14—H14C
109.5
C1—C6—C7
106.61 (8)
H14A—C14—H14C
109.5
C5—C6—C7
135.09 (9)
H14B—C14—H14C
109.5
C8—C7—C9
129.83 (9)
C16—C15—C20
118.99 (9)
C8—C7—C6
106.41 (8)
C16—C15—C8
120.49 (9)
C9—C7—C6
123.68 (9)
C20—C15—C8
120.44 (9)
N1—C8—C7
108.84 (9)
C17—C16—C15
120.27 (10)
N1—C8—C15
118.04 (9)
C17—C16—H16
119.9
C7—C8—C15
133.04 (9)
C15—C16—H16
119.9
O1—C9—C7
119.16 (9)
C18—C17—C16
120.22 (10)
O1—C9—C10
119.45 (9)
C18—C17—H17
119.9
C7—C9—C10
121.27 (9)
C16—C17—H17
119.9
C9—C10—C11
116.27 (8)
C17—C18—C19
119.93 (9)
C9—C10—H10A
108.2
C17—C18—H18
120.0
C11—C10—H10A
108.2
C19—C18—H18
120.0
C9—C10—H10B
108.2
C20—C19—C18
119.94 (10)
C11—C10—H10B
108.2
C20—C19—H19
120.0
H10A—C10—H10B
107.4
C18—C19—H19
120.0
C12—C11—C13
109.13 (9)
C19—C20—C15
120.64 (10)
C12—C11—C14
108.98 (10)
C19—C20—H20
119.7
C13—C11—C14
109.28 (10)
C15—C20—H20
119.7
C12—C11—C10
111.70 (9)
C8—N1—C1
110.40 (8)
C13—C11—C10
107.22 (9)
C8—N1—H1
126.0 (8)
C14—C11—C10
110.49 (9)
C1—N1—H1
123.6 (8)
N1—C1—C2—C3
−179.69 (10)
C6—C7—C9—C10
162.05 (9)
C6—C1—C2—C3
−0.57 (16)
O1—C9—C10—C11
−46.46 (13)
C1—C2—C3—C4
−0.89 (16)
C7—C9—C10—C11
137.54 (9)
C2—C3—C4—C5
1.11 (17)
C9—C10—C11—C12
72.06 (12)
C3—C4—C5—C6
0.15 (15)
C9—C10—C11—C13
−168.44 (9)
N1—C1—C6—C5
−178.93 (9)
C9—C10—C11—C14
−49.44 (12)
C2—C1—C6—C5
1.80 (15)
N1—C8—C15—C16
−68.98 (13)
N1—C1—C6—C7
−0.50 (11)
C7—C8—C15—C16
114.61 (12)
C2—C1—C6—C7
−179.78 (9)
N1—C8—C15—C20
107.75 (11)
C4—C5—C6—C1
−1.53 (14)
C7—C8—C15—C20
−68.66 (15)
C4—C5—C6—C7
−179.39 (10)
C20—C15—C16—C17
0.45 (15)
C1—C6—C7—C8
0.81 (10)
C8—C15—C16—C17
177.23 (9)
C5—C6—C7—C8
178.84 (11)
C15—C16—C17—C18
−1.08 (16)
C1—C6—C7—C9
−176.08 (9)
C16—C17—C18—C19
0.87 (16)
C5—C6—C7—C9
1.95 (17)
C17—C18—C19—C20
−0.04 (16)
C9—C7—C8—N1
175.80 (9)
C18—C19—C20—C15
−0.59 (16)
C6—C7—C8—N1
−0.82 (11)
C16—C15—C20—C19
0.38 (15)
C9—C7—C8—C15
−7.55 (18)
C8—C15—C20—C19
−176.40 (10)
C6—C7—C8—C15
175.82 (10)
C7—C8—N1—C1
0.53 (11)
C8—C7—C9—O1
169.93 (10)
C15—C8—N1—C1
−176.69 (8)
C6—C7—C9—O1
−13.96 (14)
C2—C1—N1—C8
179.23 (10)
C8—C7—C9—C10
−14.06 (15)
C6—C1—N1—C8
0.00 (11)
D—H···A
D—H
H···A
D···A
D—H···A
N1—H1···O1i
0.909 (13)
1.953 (13)
2.7950 (11)
153.3 (12)
C21H15NO
F(000) = 1248
Mr = 297.34
Dx = 1.297 Mg m−3
Monoclinic, P21/c
Mo Kα radiation, λ = 0.71073 Å
a = 14.5065 (10) Å
Cell parameters from 13275 reflections
b = 11.7911 (9) Å
θ = 2.7–27.5°
c = 18.6961 (13) Å
µ = 0.08 mm−1
β = 107.782 (2)°
T = 100 K
V = 3045.1 (4) Å3
Lath, colourless
Z = 8
0.22 × 0.03 × 0.01 mm
Rigaku Mercury CCD diffractometer
4461 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube
Rint = 0.063
Graphite monochromator
θmax = 27.5°, θmin = 2.7°
ω scans
h = −18→18
20680 measured reflections
k = −15→13
6949 independent reflections
l = −23→24
Refinement on F2
Primary atom site location: structure-invariant direct methods
Least-squares matrix: full
Secondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.076
Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.215
H-atom parameters constrained
S = 1.05
w = 1/[σ2(Fo2) + (0.1011P)2 + 1.7166P] where P = (Fo2 + 2Fc2)/3
6949 reflections
(Δ/σ)max < 0.001
415 parameters
Δρmax = 0.58 e Å−3
0 restraints
Δρmin = −0.23 e Å−3
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell esds are taken
into account individually in the estimation of esds in distances, angles
and torsion angles; correlations between esds in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and
goodness of fit S are based on F2, conventional R-factors R are based
on F, with F set to zero for negative F2. The threshold expression of
F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for refinement. R-factors based
on F2 are statistically about twice as large as those based on F, and R-
factors based on ALL data will be even larger.
Authors: Mallinath B Hadimani; Raymond J Kessler; Jason A Kautz; Anjan Ghatak; Anupama R Shirali; Heather O'Dell; Charles M Garner; Kevin G Pinney Journal: Acta Crystallogr C Date: 2002-05-21 Impact factor: 1.172
Authors: Keith C Coffman; Teresa A Palazzo; Timothy P Hartley; James C Fettinger; Dean J Tantillo; Mark J Kurth Journal: Org Lett Date: 2013-04-04 Impact factor: 6.005