Literature DB >> 21202628

4-Bromo-8-methoxy-quinoline.

Neil Vasdev, Padmakar V Kulkarni, Alan A Wilson, Sylvain Houle, Alan J Lough.   

Abstract

The non-H atoms of the title mol-ecule, C(10)H(8)BrNO, are essentially coplanar. In the crystal structure, mol-ecules are linked by weak inter-molecular C-H⋯π(arene) inter-actions, forming one-dimensional chains along the a axis.

Entities:  

Year:  2008        PMID: 21202628      PMCID: PMC2961403          DOI: 10.1107/S1600536808014591

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For related literature, see: Michael (2008 ▶); Kulkarni et al. (2006 ▶); Irving & Pinnington (1957 ▶).

Experimental

Crystal data

C10H8BrNO M = 238.08 Orthorhombic, a = 5.1615 (1) Å b = 12.1337 (6) Å c = 14.2436 (7) Å V = 892.05 (6) Å3 Z = 4 Mo Kα radiation μ = 4.56 mm−1 T = 150 (1) K 0.30 × 0.12 × 0.11 mm

Data collection

Nonius KappaCCD diffractometer Absorption correction: multi-scan (SORTAV; Blessing 1995 ▶) T min = 0.545, T max = 0.607 6134 measured reflections 2026 independent reflections 1872 reflections with I > 2σ(I) R int = 0.035

Refinement

R[F 2 > 2σ(F 2)] = 0.028 wR(F 2) = 0.059 S = 1.01 2026 reflections 120 parameters H-atom parameters constrained Δρmax = 0.38 e Å−3 Δρmin = −0.40 e Å−3 Absolute structure: Flack (1983 ▶), 815 Friedel pairs Flack parameter: −0.017 (11) Data collection: COLLECT (Nonius, 2002 ▶); cell refinement: DENZO-SMN (Otwinowski & Minor, 1997 ▶); data reduction: DENZO-SMN; program(s) used to solve structure: SIR92 (Altomare et al., 1994 ▶); program(s) used to refine structure: SHELXTL (Sheldrick, 2008 ▶); molecular graphics: PLATON (Spek, 2003 ▶) and SHELXTL; software used to prepare material for publication: SHELXTL. Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536808014591/pv2082sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536808014591/pv2082Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C10H8BrNOF000 = 472
Mr = 238.08Dx = 1.773 Mg m3
Orthorhombic, P212121Mo Kα radiation λ = 0.71073 Å
Hall symbol: P 2ac 2abCell parameters from 6134 reflections
a = 5.1615 (1) Åθ = 2.9–27.5º
b = 12.1337 (6) ŵ = 4.56 mm1
c = 14.2436 (7) ÅT = 150 (1) K
V = 892.05 (6) Å3Needle, colourless
Z = 40.30 × 0.12 × 0.11 mm
Nonius KappaCCD diffractometer2026 independent reflections
Radiation source: fine-focus sealed tube1872 reflections with I > 2σ(I)
Monochromator: graphiteRint = 0.036
Detector resolution: 9 pixels mm-1θmax = 27.5º
T = 150(2) Kθmin = 2.9º
φ scans and ω scans with κ offsetsh = −5→6
Absorption correction: multi-scan(SORTAV; Blessing 1995)k = −14→15
Tmin = 0.545, Tmax = 0.607l = −18→18
6134 measured reflections
Refinement on F2H-atom parameters constrained
Least-squares matrix: full  w = 1/[σ2(Fo2) + (0.0306P)2 + 0.0333P] where P = (Fo2 + 2Fc2)/3
R[F2 > 2σ(F2)] = 0.028(Δ/σ)max = 0.001
wR(F2) = 0.059Δρmax = 0.38 e Å3
S = 1.01Δρmin = −0.40 e Å3
2026 reflectionsExtinction correction: SHELXTL (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
120 parametersExtinction coefficient: 0.0062 (8)
Primary atom site location: structure-invariant direct methodsAbsolute structure: Flack (1983), 815 Friedel pairs
Secondary atom site location: difference Fourier mapFlack parameter: −0.017 (11)
Hydrogen site location: inferred from neighbouring sites
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s 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 > σ(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.
xyzUiso*/Ueq
Br11.02034 (5)0.36147 (2)0.509948 (18)0.02940 (11)
O10.1007 (3)0.62674 (16)0.72708 (14)0.0259 (4)
N10.4260 (4)0.64140 (17)0.58326 (14)0.0233 (4)
C10.5884 (5)0.6481 (2)0.51287 (18)0.0278 (6)
H1A0.58190.71260.47520.033*
C20.7717 (5)0.5671 (2)0.48878 (19)0.0268 (6)
H2A0.88420.57680.43660.032*
C30.7833 (5)0.4746 (2)0.54217 (19)0.0239 (6)
C40.6190 (5)0.4611 (2)0.62176 (17)0.0188 (5)
C50.6239 (5)0.3694 (2)0.68244 (18)0.0232 (6)
H5A0.74290.31090.67180.028*
C60.4556 (5)0.3650 (2)0.75705 (17)0.0243 (6)
H6A0.46240.30380.79860.029*
C70.2739 (5)0.4487 (2)0.77325 (18)0.0235 (6)
H7A0.15580.44240.82410.028*
C80.2656 (5)0.5400 (2)0.71586 (17)0.0195 (5)
C90.4408 (5)0.54916 (19)0.63810 (16)0.0199 (5)
C10−0.0731 (5)0.6201 (2)0.80535 (18)0.0271 (7)
H10C−0.17840.68720.80830.041*
H10D0.02690.61260.86350.041*
H10A−0.18650.55590.79780.041*
U11U22U33U12U13U23
Br10.02472 (15)0.03108 (16)0.03239 (16)0.00303 (10)0.00306 (11)−0.00756 (11)
O10.0264 (10)0.0255 (11)0.0259 (10)0.0030 (8)0.0047 (7)0.0004 (8)
N10.0281 (10)0.0212 (11)0.0206 (11)−0.0009 (9)−0.0021 (8)0.0001 (10)
C10.0339 (13)0.0259 (14)0.0237 (14)−0.0019 (10)0.0030 (10)0.0087 (14)
C20.0265 (12)0.0299 (14)0.0240 (14)−0.0065 (10)0.0049 (12)0.0001 (13)
C30.0215 (13)0.0257 (14)0.0246 (15)−0.0015 (10)−0.0025 (10)−0.0078 (12)
C40.0210 (13)0.0184 (13)0.0169 (13)−0.0037 (9)−0.0018 (9)−0.0016 (11)
C50.0224 (12)0.0215 (14)0.0257 (14)0.0016 (11)−0.0064 (10)−0.0019 (12)
C60.0328 (15)0.0176 (13)0.0225 (13)−0.0037 (13)−0.0074 (11)0.0035 (11)
C70.0257 (14)0.0258 (15)0.0191 (14)−0.0088 (11)0.0018 (11)−0.0010 (11)
C80.0208 (13)0.0185 (13)0.0193 (13)−0.0003 (10)−0.0021 (10)−0.0014 (11)
C90.0207 (12)0.0204 (13)0.0186 (12)−0.0042 (10)−0.0046 (10)0.0010 (10)
C100.0240 (14)0.0314 (17)0.0258 (15)0.0015 (12)0.0047 (11)−0.0028 (12)
Br1—C31.895 (2)C4—C91.429 (3)
O1—C81.362 (3)C5—C61.374 (4)
O1—C101.433 (3)C5—H5A0.9500
N1—C11.309 (3)C6—C71.402 (4)
N1—C91.367 (3)C6—H6A0.9500
C1—C21.407 (4)C7—C81.378 (4)
C1—H1A0.9500C7—H7A0.9500
C2—C31.357 (3)C8—C91.434 (3)
C2—H2A0.9500C10—H10C0.9800
C3—C41.425 (3)C10—H10D0.9800
C4—C51.409 (4)C10—H10A0.9800
C8—O1—C10116.0 (2)C5—C6—H6A119.3
C1—N1—C9116.9 (2)C7—C6—H6A119.3
N1—C1—C2125.0 (2)C8—C7—C6120.4 (2)
N1—C1—H1A117.5C8—C7—H7A119.8
C2—C1—H1A117.5C6—C7—H7A119.8
C3—C2—C1118.1 (2)O1—C8—C7124.8 (2)
C3—C2—H2A121.0O1—C8—C9115.1 (2)
C1—C2—H2A121.0C7—C8—C9120.0 (2)
C2—C3—C4121.0 (2)N1—C9—C4123.7 (2)
C2—C3—Br1119.4 (2)N1—C9—C8118.0 (2)
C4—C3—Br1119.58 (19)C4—C9—C8118.3 (2)
C5—C4—C3124.6 (2)O1—C10—H10C109.5
C5—C4—C9120.1 (2)O1—C10—H10D109.5
C3—C4—C9115.3 (2)H10C—C10—H10D109.5
C6—C5—C4119.6 (3)O1—C10—H10A109.5
C6—C5—H5A120.2H10C—C10—H10A109.5
C4—C5—H5A120.2H10D—C10—H10A109.5
C5—C6—C7121.5 (2)
D—H···AD—HH···AD···AD—H···A
C10—H10A···Cgi0.982.663.531 (3)148
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C10—H10ACgi0.982.663.531 (3)148

Symmetry code: (i) . Cg is the centroid of the C4–C9 ring.

  3 in total

1.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

2.  An empirical correction for absorption anisotropy.

Authors:  R H Blessing
Journal:  Acta Crystallogr A       Date:  1995-01-01       Impact factor: 2.290

Review 3.  Quinoline, quinazoline and acridone alkaloids.

Authors:  Joseph P Michael
Journal:  Nat Prod Rep       Date:  2007-12-17       Impact factor: 13.423

  3 in total

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