Literature DB >> 28083131

Crystal structure of (E)-9-({[4-(di-ethyl-amino)-phen-yl]imino}-meth-yl)-2,3,6,7-tetra-hydro-1H,5H-pyrido[3,2,1-ij]quinolin-8-ol.

Md Serajul Haque Faizi1, Musheer Ahmad2, Anatoly A Kapshuk3, Irina A Golenya3.   

Abstract

The title compound, C23H29N3O, was synthesized from the condensation reaction of 8-hy-droxy-julolidine-9-carbaldehyde and N,N-diethyl-p-phenyl-enedi-amine. The hy-droxy group forms a intra-molecular hydrogen bond to the imine N atom and generates an S(6) ring motif. The conformation about the C=N bond is E, and the aromatic ring of the julolidine moiety is inclined to the benzene ring by 3.74 (14)°. One of the fused non-aromatic rings of the julolidine moiety adopts an envelope conformation and the other has a screw-boat conformation. In the crystal, mol-ecules are linked by C-H⋯π inter-actions involving the aromatic julolidine ring, forming slabs parallel to the bc plane. The tricyclic fragment of the julolidine ring and the azomethine C=N bond are disordered over two sets of sites with a refined occupancy ratio of 0.773 (3):0.227 (3).

Entities:  

Keywords:  8-hy­droxy­julolidine-9-carboxaldehyde; C—H⋯π inter­actions; N,N-diethyl-p-phenyl­enedi­amine; Schiff base; crystal structure; hydrogen bonding; julolidine

Year:  2017        PMID: 28083131      PMCID: PMC5209767          DOI: 10.1107/S2056989016019733

Source DB:  PubMed          Journal:  Acta Crystallogr E Crystallogr Commun


Chemical context

8-Hy­droxy­julolidine-9-carboxaldehyde is a well-known chromo­phore used in fluorescence chemosensors, and chemosensors with the julolidine moiety are usually soluble in aqueous solutions (Narayanaswamy & Govindaraju, 2012 ▸; Maity et al., 2011 ▸; Na et al., 2013 ▸; Noh et al., 2013 ▸). Compounds containing a julolidine group exhibit chromogenic naked-eye detection of copper, zinc, iron and aluminium ions as well as fluoride ions (Choi et al., 2015 ▸; Wang et al., 2013a ▸,b ▸; Kim et al., 2015 ▸; Jo et al., 2015 ▸). There are many reports in the literature on 8-hy­droxy­julolidine-9-carboxaldehyde-based Schiff bases and their application as metal sensors (Park et al., 2014 ▸; Lee et al., 2014 ▸; Kim et al., 2016 ▸). Julolidine dyes exhibit excited state intra­molecular proton transfer (Nano et al., 2015 ▸), and julolidine ring-containing compounds are also used as fluorescent probes for the measurement of cell membrane viscosity. The present work is a part of an ongoing structural study of Schiff bases and their utilization in the synthesis of new organic and polynuclear coordination compounds (Faizi & Sen, 2014 ▸; Faizi et al., 2015 ▸, 2016a ▸,b ▸). We report herein on the synthesis and crystal structure of a new julolidine derivative.

Structural commentary

The mol­ecular structure of the title compound is illustrated in Fig. 1 ▸. The conformation about the azomethine N2=C11 bond [1.285 (3) A°] is E, and the C14—N2—C12—C13 torsion angle is 177.86 (5)°. The mol­ecule is non-planar, with the dihedral angle between benzene ring (C1–C6) and the aromatic ring (C12–C17) of the julolidine moiety being 3.74 (14)°.
Figure 1

The mol­ecular structure of the title compound, showing the atom labelling. Displacement ellipsoids are drawn at the 40% probability level. The intra­molecular O—H⋯N hydrogen bond is shown as a dashed line (see Table 1 ▸). The minor component of the disordered fragment has been omitted for clarity.

Depending on the tautomers, two types of intra­molecular hydrogen bonds are observed in Schiff bases: O—H⋯N in phenol–imine and N—H⋯O in keto–amine tautomers. The present analysis shows that the title compound exists in the phenol–imine form (Fig. 1 ▸). It exhibits an intra­molecular O—H⋯N hydrogen bond, which generates an S(6) ring motif (Fig. 1 ▸ and Table 1 ▸). This intra­molecular O—H⋯N hydrogen bond has been detected previously in julolidine derivatives (Barbero et al., 2012 ▸). The C13—O1 [1.344 (2) Å] bond length is in agreement with the values reported for similar compounds, viz. 5-di­ethyl­amino-2-[(E)-(2,4-di­meth­oxy­phen­yl)imino­meth­yl]phenol and 8-{(E)-[(4-chloro­phen­yl)imino]­meth­yl}-1,1,7,7-tetra­methyl-1,2,3,5,6,7-hexa­hydro­pyrido[3,2,1-ij]quinolin-9-ol (Kantar et al., 2013 ▸). One of the fused non-aromatic rings of the julolidine moiety (N1/C14/C15/C18–C20) adopts an envelope conformation while the other (N1/C15/C16/C21–C23) has a screw-boat conformation.
Table 1

Hydrogen-bond geometry (Å, °)

Cg1 is the centroid of the C12–C17 ring.

D—H⋯A D—HH⋯A DA D—H⋯A
O1—H1⋯N20.821.832.557 (4)147
C7—H7ACg1i 0.972.793.574 (3)138
C20—H20BCg1ii 0.972.623.521 (3)154

Symmetry codes: (i) ; (ii) .

Supra­molecular features

In the crystal, mol­ecules are linked by C—H⋯π inter­actions (Table 1 ▸), involving the aromatic julolidine ring, forming layers lying parallel to the bc plane, as illustrated in Fig. 2 ▸.
Figure 2

A view along the b axis of the crystal packing of the title compound. The C—H⋯π inter­actions are shown as dashed lines (see Table 1 ▸) and the minor component of the disordered fragment has been omitted for clarity.

Database survey

There are very few examples of similar compounds in the literature and, to the best of our knowledge, the new fluorescent chemosensor for the selective detection of Zn2+ in aqueous solution, mentioned in the Chemical context section (Choi et al., 2015 ▸), has not been characterized crystallographically. A search of the Cambridge Structural Database (CSD, Version 5.37, update May 2016; Groom et al., 2016 ▸) gave 121 hits for the julolidine moiety. Of these, six have an OH group in position 8, and four also have a C=N group in position 1. Of the latter, one compound, viz. 9-{[(4-chlorophen­yl)imino]­meth­yl}-1,1,7,7-tetra­methyl-2,3,6,7-tetra­hydro-1H,5H-pyrido[3,2,1-ij]quinolin-8-ol (CSD refcode: IGALUZ; Kantar et al., 2013 ▸), resembles the title compound and also exists in the phenol–imine form with an intra­molecular O—H⋯N hydrogen bond.

Synthesis and crystallization

An ethano­lic solution of 8-hy­droxy­julolidine-9-carboxaldehyde (100 mg, 0.46 mmol) was added to N,N-diethyl-p-phenyl­enedi­amine (75 mg, 0.46 mmol) in absolute ethanol (3 ml). Two drops of HCl were added to the reaction solution and it was stirred for 30 min at room temperature. The resulting yellow precipitate was recovered by filtration, washed several times with a small portions of ice EtOH and then with diethyl ether to give 130 mg (78%) of the title compound. Colourless block-like crystals, suitable for X-ray diffraction analysis, were obtained within three days by slow evaporation of a solution in methanol.

Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2 ▸. All the H atoms were located from difference Fourier maps but in the final cycles of refinement they were included in calculated positions and treated as riding atoms: O—H = 0.84 Å, C—H = 0.93–0.98 Å with U iso(H) = 1.5U eq(O, C-meth­yl) and 1.2U eq(C) for other H atoms. The tricyclic fragment of the julolidine ring and the azomethine C=N bond are disordered over two sets of sites with a refined occupancy ratio of 0.773 (3):0.227 (3). The non-hydrogen atoms of the major fraction were refined anisotropically while those of the minor fraction were refined isotropically, and one disordered atom, C21A, is probably further disordered, but this was not corrected for. The bond lengths C1—N2 and C1—N2A were refined with distance restraints of 1.40 (2) Å.
Table 2

Experimental details

Crystal data
Chemical formulaC23H29N3O
M r 363.49
Crystal system, space groupMonoclinic, P21/c
Temperature (K)293
a, b, c (Å)11.565 (2), 8.0504 (16), 20.665 (4)
β (°)97.68 (3)
V3)1906.7 (7)
Z 4
Radiation typeMo Kα
μ (mm−1)0.08
Crystal size (mm)0.18 × 0.14 × 0.11
 
Data collection
DiffractometerBruker APEXII CCD
Absorption correctionMulti-scan (SADABS; Bruker, 2005)
T min, T max 0.894, 0.943
No. of measured, independent and observed [I > 2σ(I)] reflections15990, 3900, 2582
R int 0.077
(sin θ/λ)max−1)0.625
 
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S 0.064, 0.150, 1.06
No. of reflections3900
No. of parameters286
No. of restraints2
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å−3)0.33, −0.25

Computer programs: APEX2 and SAINT (Bruker, 2005 ▸), SHELXS97 (Sheldrick, 2008 ▸), SHELXL2014 (Sheldrick, 2015 ▸), ORTEP-3 for Windows (Farrugia, 2012 ▸), Mercury (Macrae et al., 2008 ▸) and PLATON (Spek, 2009 ▸).

Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S2056989016019733/su5338sup1.cif Click here for additional data file. Supporting information file. DOI: 10.1107/S2056989016019733/su5338Isup2.cml CCDC reference: 1521905 Additional supporting information: crystallographic information; 3D view; checkCIF report
C23H29N3OF(000) = 784
Mr = 363.49Dx = 1.266 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
a = 11.565 (2) ÅCell parameters from 1274 reflections
b = 8.0504 (16) Åθ = 2.8–25.3°
c = 20.665 (4) ŵ = 0.08 mm1
β = 97.68 (3)°T = 293 K
V = 1906.7 (7) Å3Block, colourless
Z = 40.18 × 0.14 × 0.11 mm
Bruker APEXII CCD diffractometer3900 independent reflections
Radiation source: fine-focus sealed tube2582 reflections with I > 2σ(I)
Horizontally mounted graphite crystal monochromatorRint = 0.077
Detector resolution: 9 pixels mm-1θmax = 26.4°, θmin = 2.7°
φ scans and ω scans with κ offseth = −12→14
Absorption correction: multi-scan (SADABS; Bruker, 2005)k = −10→10
Tmin = 0.894, Tmax = 0.943l = −25→25
15990 measured reflections
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.064H-atom parameters constrained
wR(F2) = 0.150w = 1/[σ2(Fo2) + (0.0313P)2 + 1.5846P] where P = (Fo2 + 2Fc2)/3
S = 1.06(Δ/σ)max < 0.001
3900 reflectionsΔρmax = 0.33 e Å3
286 parametersΔρmin = −0.25 e Å3
2 restraintsExtinction correction: SHELXL2014 (Sheldrick 2015), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0087 (10)
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.
xyzUiso*/UeqOcc. (<1)
N30.95181 (17)0.9756 (2)0.12926 (9)0.0289 (5)
C10.8227 (2)0.9508 (3)0.31028 (11)0.0267 (6)
C20.9203 (2)1.0455 (3)0.30272 (11)0.0267 (6)
H2A0.95821.10330.33840.032*
C30.9622 (2)1.0554 (3)0.24346 (11)0.0250 (5)
H3A1.02741.12070.23990.030*
C40.9085 (2)0.9688 (3)0.18799 (11)0.0242 (5)
C50.8084 (2)0.8765 (3)0.19602 (12)0.0287 (6)
H5A0.76910.81960.16060.034*
C60.7677 (2)0.8689 (3)0.25534 (12)0.0299 (6)
H6A0.70100.80690.25890.036*
C70.8953 (2)0.8891 (3)0.07152 (11)0.0301 (6)
H7A0.86130.78670.08490.036*
H7B0.95370.86030.04380.036*
C80.8010 (2)0.9924 (3)0.03270 (11)0.0334 (6)
H8A0.76650.9305−0.00470.050*
H8B0.74221.01930.05960.050*
H8C0.83451.09290.01850.050*
C91.0547 (2)1.0715 (3)0.12163 (11)0.0289 (6)
H9A1.05371.17340.14660.035*
H9B1.05261.10150.07600.035*
C101.1672 (2)0.9792 (3)0.14382 (12)0.0342 (6)
H10A1.23251.04850.13770.051*
H10B1.17080.95130.18920.051*
H10C1.16970.87940.11860.051*
O10.61126 (18)0.7817 (3)0.42135 (9)0.0284 (6)0.773 (3)
H10.64860.80560.39160.034*0.773 (3)
N10.5791 (6)0.9127 (8)0.6414 (3)0.0271 (15)0.773 (3)
N20.7705 (3)0.9226 (4)0.36617 (15)0.0236 (8)0.773 (3)
C110.8123 (3)0.9873 (3)0.42118 (16)0.0208 (7)0.773 (3)
H110.88031.05020.42420.025*0.773 (3)
C120.75428 (19)0.9631 (3)0.47925 (8)0.0209 (7)0.773 (3)
C130.65542 (19)0.8636 (2)0.47575 (8)0.0190 (8)0.773 (3)
C140.59674 (17)0.8471 (3)0.52987 (10)0.0229 (7)0.773 (3)
C150.6369 (2)0.9301 (3)0.58749 (8)0.0236 (10)0.773 (3)
C160.7358 (2)1.0296 (3)0.59099 (7)0.0225 (7)0.773 (3)
C170.79445 (17)1.0461 (2)0.53687 (9)0.0245 (7)0.773 (3)
H17A0.86061.11270.53920.029*0.773 (3)
C180.4822 (3)0.8028 (4)0.64386 (18)0.0275 (8)0.773 (3)
H18A0.41000.86420.63330.033*0.773 (3)
H18B0.48450.75950.68780.033*0.773 (3)
C190.4846 (3)0.6604 (4)0.59677 (19)0.0279 (8)0.773 (3)
H19A0.41410.59460.59580.033*0.773 (3)
H19B0.55110.58940.61060.033*0.773 (3)
C200.4932 (3)0.7308 (4)0.52849 (15)0.0260 (7)0.773 (3)
H20A0.50140.64010.49850.031*0.773 (3)
H20B0.42210.79040.51280.031*0.773 (3)
C210.5959 (5)1.0430 (7)0.6951 (2)0.0239 (11)0.773 (3)
H21A0.51961.08100.70340.029*0.773 (3)
H21B0.63330.99080.73480.029*0.773 (3)
C220.6643 (5)1.1862 (8)0.6814 (3)0.0324 (13)0.773 (3)
H22A0.68631.24930.72120.039*0.773 (3)
H22B0.61861.25770.65000.039*0.773 (3)
C230.7737 (3)1.1264 (5)0.65402 (19)0.0279 (9)0.773 (3)
H23A0.82121.22080.64510.034*0.773 (3)
H23B0.81971.05560.68560.034*0.773 (3)
O1A0.8436 (7)1.0727 (9)0.5042 (4)0.034 (2)*0.227 (3)
H1AA0.85211.05520.46600.051*0.227 (3)
N1A0.5787 (18)0.935 (3)0.6525 (10)0.009 (4)*0.227 (3)
N2A0.8007 (11)0.9666 (15)0.3807 (6)0.023 (3)*0.227 (3)
C11A0.7106 (9)0.8852 (13)0.4005 (5)0.025 (2)*0.227 (3)
H11A0.66180.82140.37090.030*0.227 (3)
C12A0.6880 (9)0.8961 (12)0.4695 (3)0.028 (4)*0.227 (3)
C13A0.7477 (7)0.9960 (11)0.5177 (5)0.025 (3)*0.227 (3)
C14A0.7114 (9)1.0041 (14)0.5791 (4)0.046 (5)*0.227 (3)
C15A0.6155 (9)0.9122 (15)0.5923 (3)0.022 (3)*0.227 (3)
C16A0.5559 (7)0.8122 (11)0.5440 (4)0.017 (3)*0.227 (3)
C17A0.5922 (8)0.8041 (10)0.4826 (3)0.031 (3)*0.227 (3)
H17B0.55230.73720.45040.038*0.227 (3)
C18A0.4874 (14)0.8190 (19)0.6734 (7)0.038 (4)*0.227 (3)
H18C0.50760.79400.71950.046*0.227 (3)
H18D0.41260.87530.66800.046*0.227 (3)
C19A0.4757 (11)0.6612 (15)0.6364 (6)0.031 (3)*0.227 (3)
H19C0.41140.59690.64900.038*0.227 (3)
H19D0.54650.59630.64600.038*0.227 (3)
C20A0.4527 (11)0.7013 (15)0.5615 (7)0.027 (3)*0.227 (3)
H20C0.37930.75990.55130.033*0.227 (3)
H20D0.44860.59920.53640.033*0.227 (3)
C21A0.607 (4)1.042 (6)0.694 (2)0.131 (15)*0.227 (3)
H21C0.65120.98970.73230.157*0.227 (3)
H21D0.53691.08920.70810.157*0.227 (3)
C22A0.6852 (19)1.190 (3)0.6675 (9)0.024 (5)*0.227 (3)
H22C0.63621.26470.63880.028*0.227 (3)
H22D0.72511.25400.70360.028*0.227 (3)
C23A0.7747 (14)1.100 (2)0.6295 (7)0.029 (4)*0.227 (3)
H23C0.82291.18150.61090.035*0.227 (3)
H23D0.82511.02930.65880.035*0.227 (3)
U11U22U33U12U13U23
N30.0334 (12)0.0315 (11)0.0207 (10)−0.0089 (10)0.0000 (9)−0.0024 (9)
C10.0270 (13)0.0232 (12)0.0307 (13)0.0075 (11)0.0067 (11)0.0096 (11)
C20.0303 (13)0.0252 (12)0.0235 (12)0.0024 (11)0.0000 (10)−0.0006 (10)
C30.0260 (13)0.0222 (12)0.0262 (12)−0.0031 (10)0.0006 (10)0.0023 (10)
C40.0264 (13)0.0191 (11)0.0253 (12)0.0018 (10)−0.0027 (10)0.0034 (10)
C50.0286 (13)0.0250 (13)0.0306 (13)−0.0022 (11)−0.0031 (11)0.0027 (11)
C60.0250 (13)0.0229 (12)0.0412 (15)−0.0017 (11)0.0018 (11)0.0097 (11)
C70.0414 (15)0.0241 (12)0.0241 (12)−0.0074 (11)0.0023 (11)−0.0038 (11)
C80.0442 (16)0.0270 (13)0.0267 (13)−0.0092 (12)−0.0038 (11)0.0001 (11)
C90.0368 (14)0.0293 (13)0.0207 (12)−0.0080 (11)0.0039 (10)−0.0007 (10)
C100.0367 (15)0.0369 (15)0.0291 (13)−0.0058 (12)0.0041 (11)−0.0023 (12)
O10.0353 (13)0.0284 (12)0.0212 (11)−0.0021 (10)0.0027 (9)−0.0041 (9)
N10.038 (2)0.021 (3)0.021 (3)0.0025 (16)0.0033 (19)−0.0086 (18)
N20.0244 (17)0.0194 (16)0.0268 (17)0.0040 (14)0.0029 (14)0.0021 (13)
C110.0210 (15)0.0143 (14)0.0269 (18)0.0029 (12)0.0022 (13)0.0026 (13)
C120.0241 (17)0.0124 (14)0.0252 (17)0.0024 (13)−0.0008 (13)0.0028 (13)
C130.0208 (19)0.0129 (15)0.0221 (16)0.0025 (16)−0.0012 (13)−0.0030 (12)
C140.0276 (18)0.0196 (16)0.0222 (17)0.0055 (14)0.0054 (14)0.0048 (13)
C150.033 (2)0.0161 (17)0.0201 (17)0.0108 (16)−0.0008 (14)0.0040 (13)
C160.0298 (18)0.0170 (16)0.0192 (16)0.0081 (15)−0.0022 (15)0.0061 (14)
C170.0245 (17)0.0188 (15)0.0278 (17)−0.0010 (14)−0.0060 (15)0.0006 (14)
C180.0267 (18)0.034 (2)0.0224 (19)0.0030 (15)0.0054 (15)0.0011 (17)
C190.0286 (18)0.0233 (17)0.032 (2)0.0009 (14)0.0030 (16)0.0018 (16)
C200.0325 (18)0.0235 (16)0.0219 (16)0.0062 (15)0.0036 (14)0.0007 (14)
C210.035 (2)0.0291 (19)0.0078 (14)0.0111 (15)0.0027 (12)−0.0008 (13)
C220.047 (3)0.031 (2)0.018 (2)0.003 (2)0.000 (2)−0.005 (2)
C230.035 (2)0.0259 (19)0.021 (2)−0.0021 (15)−0.0018 (17)−0.0045 (17)
N3—C41.375 (3)C19—C201.536 (4)
N3—C91.445 (3)C19—H19A0.9700
N3—C71.458 (3)C19—H19B0.9700
C1—C21.388 (3)C20—H20A0.9700
C1—C61.391 (3)C20—H20B0.9700
C1—N21.392 (4)C21—C221.447 (9)
C1—N2A1.516 (12)C21—H21A0.9700
C2—C31.378 (3)C21—H21B0.9700
C2—H2A0.9300C22—C231.532 (7)
C3—C41.412 (3)C22—H22A0.9700
C3—H3A0.9300C22—H22B0.9700
C4—C51.404 (3)C23—H23A0.9700
C5—C61.372 (3)C23—H23B0.9700
C5—H5A0.9300O1A—C13A1.331 (11)
C6—H6A0.9300O1A—H1AA0.8200
C7—C81.514 (3)N1A—C21A1.23 (4)
C7—H7A0.9700N1A—C15A1.38 (2)
C7—H7B0.9700N1A—C18A1.51 (3)
C8—H8A0.9600N2A—C11A1.341 (16)
C8—H8B0.9600C11A—C12A1.485 (12)
C8—H8C0.9600C11A—H11A0.9300
C9—C101.515 (3)C12A—C13A1.3900
C9—H9A0.9700C12A—C17A1.3900
C9—H9B0.9700C13A—C14A1.3900
C10—H10A0.9600C14A—C15A1.3900
C10—H10B0.9600C14A—C23A1.421 (16)
C10—H10C0.9600C15A—C16A1.3900
O1—C131.344 (2)C16A—C17A1.3900
O1—H10.8200C16A—C20A1.571 (14)
N1—C151.381 (6)C17A—H17B0.9300
N1—C181.434 (8)C18A—C19A1.479 (18)
N1—C211.521 (7)C18A—H18C0.9700
N2—C111.285 (5)C18A—H18D0.9700
C11—C121.464 (3)C19A—C20A1.568 (17)
C11—H110.9300C19A—H19C0.9700
C12—C131.3900C19A—H19D0.9700
C12—C171.3900C20A—H20C0.9700
C13—C141.3900C20A—H20D0.9700
C14—C151.3900C21A—C22A1.64 (5)
C14—C201.517 (4)C21A—H21C0.9700
C15—C161.3900C21A—H21D0.9700
C16—C171.3900C22A—C23A1.56 (2)
C16—C231.531 (4)C22A—H22C0.9700
C17—H17A0.9300C22A—H22D0.9700
C18—C191.506 (5)C23A—H23C0.9700
C18—H18A0.9700C23A—H23D0.9700
C18—H18B0.9700
C4—N3—C9121.33 (19)C14—C20—H20A109.4
C4—N3—C7121.8 (2)C19—C20—H20A109.4
C9—N3—C7116.83 (19)C14—C20—H20B109.4
C2—C1—C6117.3 (2)C19—C20—H20B109.4
C2—C1—N2129.3 (3)H20A—C20—H20B108.0
C6—C1—N2113.4 (2)C22—C21—N1115.2 (5)
C2—C1—N2A107.8 (5)C22—C21—H21A108.5
C6—C1—N2A134.9 (5)N1—C21—H21A108.5
C3—C2—C1121.3 (2)C22—C21—H21B108.5
C3—C2—H2A119.3N1—C21—H21B108.5
C1—C2—H2A119.3H21A—C21—H21B107.5
C2—C3—C4121.6 (2)C21—C22—C23108.8 (5)
C2—C3—H3A119.2C21—C22—H22A109.9
C4—C3—H3A119.2C23—C22—H22A109.9
N3—C4—C5121.9 (2)C21—C22—H22B109.9
N3—C4—C3121.6 (2)C23—C22—H22B109.9
C5—C4—C3116.5 (2)H22A—C22—H22B108.3
C6—C5—C4121.1 (2)C16—C23—C22108.5 (3)
C6—C5—H5A119.5C16—C23—H23A110.0
C4—C5—H5A119.5C22—C23—H23A110.0
C5—C6—C1122.2 (2)C16—C23—H23B110.0
C5—C6—H6A118.9C22—C23—H23B110.0
C1—C6—H6A118.9H23A—C23—H23B108.4
N3—C7—C8112.5 (2)C13A—O1A—H1AA109.5
N3—C7—H7A109.1C21A—N1A—C15A130 (3)
C8—C7—H7A109.1C21A—N1A—C18A111 (3)
N3—C7—H7B109.1C15A—N1A—C18A119.1 (16)
C8—C7—H7B109.1C11A—N2A—C1119.3 (10)
H7A—C7—H7B107.8N2A—C11A—C12A120.5 (10)
C7—C8—H8A109.5N2A—C11A—H11A119.7
C7—C8—H8B109.5C12A—C11A—H11A119.7
H8A—C8—H8B109.5C13A—C12A—C17A120.0
C7—C8—H8C109.5C13A—C12A—C11A126.0 (8)
H8A—C8—H8C109.5C17A—C12A—C11A113.8 (8)
H8B—C8—H8C109.5O1A—C13A—C12A117.8 (8)
N3—C9—C10113.1 (2)O1A—C13A—C14A122.1 (8)
N3—C9—H9A109.0C12A—C13A—C14A120.0
C10—C9—H9A109.0C15A—C14A—C13A120.0
N3—C9—H9B109.0C15A—C14A—C23A119.5 (9)
C10—C9—H9B109.0C13A—C14A—C23A120.4 (9)
H9A—C9—H9B107.8N1A—C15A—C14A117.2 (11)
C9—C10—H10A109.5N1A—C15A—C16A122.6 (11)
C9—C10—H10B109.5C14A—C15A—C16A120.0
H10A—C10—H10B109.5C17A—C16A—C15A120.0
C9—C10—H10C109.5C17A—C16A—C20A121.0 (7)
H10A—C10—H10C109.5C15A—C16A—C20A118.9 (7)
H10B—C10—H10C109.5C16A—C17A—C12A120.0
C13—O1—H1109.5C16A—C17A—H17B120.0
C15—N1—C18123.8 (4)C12A—C17A—H17B120.0
C15—N1—C21119.4 (5)C19A—C18A—N1A113.6 (13)
C18—N1—C21115.1 (5)C19A—C18A—H18C108.8
C11—N2—C1120.9 (3)N1A—C18A—H18C108.8
N2—C11—C12120.8 (3)C19A—C18A—H18D108.8
N2—C11—H11119.6N1A—C18A—H18D108.8
C12—C11—H11119.6H18C—C18A—H18D107.7
C13—C12—C17120.0C18A—C19A—C20A109.0 (11)
C13—C12—C11119.86 (18)C18A—C19A—H19C109.9
C17—C12—C11120.06 (18)C20A—C19A—H19C109.9
O1—C13—C14117.02 (18)C18A—C19A—H19D109.9
O1—C13—C12122.97 (18)C20A—C19A—H19D109.9
C14—C13—C12120.0H19C—C19A—H19D108.3
C13—C14—C15120.0C19A—C20A—C16A108.1 (9)
C13—C14—C20120.86 (18)C19A—C20A—H20C110.1
C15—C14—C20119.03 (18)C16A—C20A—H20C110.1
N1—C15—C14120.0 (3)C19A—C20A—H20D110.1
N1—C15—C16120.0 (3)C16A—C20A—H20D110.1
C14—C15—C16120.0H20C—C20A—H20D108.4
C17—C16—C15120.0N1A—C21A—C22A112 (3)
C17—C16—C23121.4 (2)N1A—C21A—H21C109.2
C15—C16—C23118.6 (2)C22A—C21A—H21C109.2
C16—C17—C12120.0N1A—C21A—H21D109.2
C16—C17—H17A120.0C22A—C21A—H21D109.2
C12—C17—H17A120.0H21C—C21A—H21D107.9
N1—C18—C19111.4 (3)C23A—C22A—C21A105 (2)
N1—C18—H18A109.3C23A—C22A—H22C110.6
C19—C18—H18A109.3C21A—C22A—H22C110.6
N1—C18—H18B109.3C23A—C22A—H22D110.6
C19—C18—H18B109.3C21A—C22A—H22D110.6
H18A—C18—H18B108.0H22C—C22A—H22D108.8
C18—C19—C20108.8 (3)C14A—C23A—C22A108.1 (14)
C18—C19—H19A109.9C14A—C23A—H23C110.1
C20—C19—H19A109.9C22A—C23A—H23C110.1
C18—C19—H19B109.9C14A—C23A—H23D110.1
C20—C19—H19B109.9C22A—C23A—H23D110.1
H19A—C19—H19B108.3H23C—C23A—H23D108.4
C14—C20—C19111.0 (2)
C6—C1—C2—C3−1.2 (3)N1—C18—C19—C20−53.5 (4)
N2—C1—C2—C3178.0 (3)C13—C14—C20—C19149.3 (2)
N2A—C1—C2—C3179.9 (5)C15—C14—C20—C19−26.9 (3)
C1—C2—C3—C4−0.6 (4)C18—C19—C20—C1454.4 (3)
C9—N3—C4—C5179.8 (2)C15—N1—C21—C225.9 (8)
C7—N3—C4—C50.9 (3)C18—N1—C21—C22−159.6 (5)
C9—N3—C4—C30.2 (3)N1—C21—C22—C23−46.1 (6)
C7—N3—C4—C3−178.7 (2)C17—C16—C23—C22139.8 (3)
C2—C3—C4—N3−178.5 (2)C15—C16—C23—C22−36.9 (4)
C2—C3—C4—C51.9 (3)C21—C22—C23—C1660.4 (5)
N3—C4—C5—C6178.9 (2)C2—C1—N2A—C11A−179.7 (9)
C3—C4—C5—C6−1.5 (3)C6—C1—N2A—C11A1.6 (15)
C4—C5—C6—C1−0.2 (4)C1—N2A—C11A—C12A179.0 (8)
C2—C1—C6—C51.5 (3)N2A—C11A—C12A—C13A5.3 (14)
N2—C1—C6—C5−177.8 (2)N2A—C11A—C12A—C17A−179.6 (9)
N2A—C1—C6—C5−179.9 (7)C17A—C12A—C13A—O1A175.5 (8)
C4—N3—C7—C887.5 (3)C11A—C12A—C13A—O1A−9.7 (10)
C9—N3—C7—C8−91.5 (3)C17A—C12A—C13A—C14A0.0
C4—N3—C9—C1083.4 (3)C11A—C12A—C13A—C14A174.9 (10)
C7—N3—C9—C10−97.6 (2)O1A—C13A—C14A—C15A−175.3 (9)
C2—C1—N2—C11−0.4 (4)C12A—C13A—C14A—C15A0.0
C6—C1—N2—C11178.8 (2)O1A—C13A—C14A—C23A2.1 (12)
C1—N2—C11—C12177.4 (2)C12A—C13A—C14A—C23A177.3 (12)
N2—C11—C12—C132.7 (3)C21A—N1A—C15A—C14A11 (4)
N2—C11—C12—C17−174.1 (2)C18A—N1A—C15A—C14A−170.4 (12)
C17—C12—C13—O1179.2 (2)C21A—N1A—C15A—C16A−164 (3)
C11—C12—C13—O12.4 (2)C18A—N1A—C15A—C16A14 (2)
C17—C12—C13—C140.0C13A—C14A—C15A—N1A−175.3 (14)
C11—C12—C13—C14−176.8 (2)C23A—C14A—C15A—N1A7.3 (13)
O1—C13—C14—C15−179.2 (2)C13A—C14A—C15A—C16A0.0
C12—C13—C14—C150.0C23A—C14A—C15A—C16A−177.4 (12)
O1—C13—C14—C204.6 (2)N1A—C15A—C16A—C17A175.1 (15)
C12—C13—C14—C20−176.1 (2)C14A—C15A—C16A—C17A0.0
C18—N1—C15—C144.7 (7)N1A—C15A—C16A—C20A−8.7 (15)
C21—N1—C15—C14−159.5 (4)C14A—C15A—C16A—C20A176.3 (9)
C18—N1—C15—C16−174.9 (4)C15A—C16A—C17A—C12A0.0
C21—N1—C15—C1620.9 (7)C20A—C16A—C17A—C12A−176.2 (9)
C13—C14—C15—N1−179.6 (4)C13A—C12A—C17A—C16A0.0
C20—C14—C15—N1−3.3 (4)C11A—C12A—C17A—C16A−175.4 (9)
C13—C14—C15—C160.0C21A—N1A—C18A—C19A−162 (3)
C20—C14—C15—C16176.2 (2)C15A—N1A—C18A—C19A19 (2)
N1—C15—C16—C17179.6 (4)N1A—C18A—C19A—C20A−54.2 (16)
C14—C15—C16—C170.0C18A—C19A—C20A—C16A57.0 (13)
N1—C15—C16—C23−3.7 (4)C17A—C16A—C20A—C19A149.1 (8)
C14—C15—C16—C23176.8 (3)C15A—C16A—C20A—C19A−27.1 (11)
C15—C16—C17—C120.0C15A—N1A—C21A—C22A10 (5)
C23—C16—C17—C12−176.7 (3)C18A—N1A—C21A—C22A−169 (2)
C13—C12—C17—C160.0N1A—C21A—C22A—C23A−44 (4)
C11—C12—C17—C16176.8 (2)C15A—C14A—C23A—C22A−42.8 (15)
C15—N1—C18—C1925.3 (7)C13A—C14A—C23A—C22A139.8 (12)
C21—N1—C18—C19−169.9 (4)C21A—C22A—C23A—C14A58 (2)
D—H···AD—HH···AD···AD—H···A
O1—H1···N20.821.832.557 (4)147
C7—H7A···Cg1i0.972.793.574 (3)138
C20—H20B···Cg1ii0.972.623.521 (3)154
  9 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.  Visible-near-infrared and fluorescent copper sensors based on julolidine conjugates: selective detection and fluorescence imaging in living cells.

Authors:  Debabrata Maity; Arun K Manna; D Karthigeyan; Tapas K Kundu; Swapan K Pati; T Govindaraju
Journal:  Chemistry       Date:  2011-09-01       Impact factor: 5.236

3.  Panchromatic luminescence from julolidine dyes exhibiting excited state intramolecular proton transfer.

Authors:  Adela Nano; Maria Pia Gullo; Barbara Ventura; Nicola Armaroli; Andrea Barbieri; Raymond Ziessel
Journal:  Chem Commun (Camb)       Date:  2015-02-25       Impact factor: 6.222

4.  A new multifunctional Schiff base as a fluorescence sensor for Al³⁺ and a colorimetric sensor for CN⁻ in aqueous media: an application to bioimaging.

Authors:  Seul Ah Lee; Ga Rim You; Ye Won Choi; Hyun Yong Jo; Ah Ram Kim; Insup Noh; Sung-Jin Kim; Youngmee Kim; Cheal Kim
Journal:  Dalton Trans       Date:  2014-05-14       Impact factor: 4.390

5.  8-{(E)-[(4-Chloro-phen-yl)imino]-meth-yl}-1,1,7,7-tetra-methyl-1,2,3,5,6,7-hexa-hydro-pyrido[3,2,1-ij]quinolin-9-ol.

Authors:  Esen Nur Kantar; Yavuz Köysal; Nesuhi Akdemir; Ayşen Alaman Ağar; Mustafa Serkan Soylu
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2013-05-15

6.  Crystal structure refinement with SHELXL.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr C Struct Chem       Date:  2015-01-01       Impact factor: 1.172

7.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20

8.  [Bis(quinolin-2-ylcarbon-yl)amido-κ(3) N,N',N'']bromido-(N,N-di-methyl-formamide-κO)copper(II).

Authors:  Md Serajul Haque Faizi; Pratik Sen
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-05-10

9.  The Cambridge Structural Database.

Authors:  Colin R Groom; Ian J Bruno; Matthew P Lightfoot; Suzanna C Ward
Journal:  Acta Crystallogr B Struct Sci Cryst Eng Mater       Date:  2016-04-01
  9 in total

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