organic compounds
4-(4-Bromophenyl)-8-methyl-2-oxo-1,2,3,4,4a,5,6,7-octahydroquinoline-3-carbonitrile
aCenter of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia, bChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia, and cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: edward.tiekink@gmail.com
In the title compound, C17H17BrN2O, the N-containing ring adopts an with the C atom carrying the phenyl ring displaced by −0.531 (9) Å from the plane defined by the remaining five atoms (r.m.s. deviation = 0.0099 Å). The benzene ring is almost orthogonal to the ring to which it is attached, the CCN—C—CPh—CPh torsion angle being −101.3 (7)°. The cyclohexene ring is disordered over two conformations in a statistical ratio. The most prominent interactions in the crystal are pairs of N—H⋯O hydrogen bonds between inversion-related molecules. The resulting dimers are linked into a three-dimensional architecture by C—H⋯N, C—H⋯Br and C—H⋯π interactions.
Related literature
For background to the cardiotonic and anti-inflammatory properties of octahydroquinoline-3-carbonitrile derivatives, see: Behit & Baraka (2005); Girgis et al. (2007). For a related structure, see: Asiri et al. (2012). For additional see: Cremer & Pople (1975).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Agilent, 2012); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536812029820/hb6875sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812029820/hb6875Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536812029820/hb6875Isup3.cml
A mixture of the p-bromobenzaldehyde (1.4 g, 0.01 M), 2-methylcyclohexanone (1.2 g, 0.01 M), ethyl cyanoacetate (1.1 g, 0.01 M) and ammonium acetate (6.2 g, 0.0 8M) in absolute ethanol (50 ml) was refluxed for 6 h. The reaction mixture was allowed to cool, the formed precipitate was filtered, washed with water, dried and recrystallized from its ethanol solution as light yellow plates. M.pt: 511–513 K. Yield: 78%.
Carbon-bound H-atoms were placed in calculated positions [C—H = 0.95–0.99 Å, Uiso(H) = 1.2–1.5Ueq(C)] and were included in the
in the riding model approximation. The N-bound H-atom was treated similarly with N—H = 0.88 Å and with Uiso(H) = 1.2Ueq(N). A part of the cyclohexene ring is disordered over two positions in an assumed 1:1 ratio. Pairs of 1,2-related distances were restrained to within 0.01 Å of each other. The anisotropic displacement parameters, restrained to be nearly isotropic, of the primed atoms were set to those of the unprimed ones. The amino H-atom is less than 2 Å from a methyl H-atom. As the methyl group was refined as a disordered methyl group, the short H1···H1d contact of 1.84 Å is an artifact.In continuation of our structural studies on octahydroquinoline-3-carbonitrile derivatives (Asiri et al., 2012), the crystal and molecular structure of the title compound, (I), was investigated. Interest in this class of compound stems from their demonstrated cardiotonic and anti-inflammatory properties (Behit & Baraka, 2005; Girgis et al., 2007).
In (I), Fig. 1, the N1-containing ring of the fused octahydroquinoline fused-ring system, adopts an
with the C10 atom, carrying the phenyl ring, lying -0.531 (9)° out of the plane defined by the remaining five atoms [r.m.s. deviation = 0.0099 Å]. Owing to two conformations of equal weight, the assignment of conformation of the C6 ring is somewhat problematic but a indicates an intermediate conformation between screw-boat and half-chair (Cremer & Pople, 1975). The phenyl ring is almost orthogonal to the ring to which it is attached with the C9—C10—C12—C13 torsion angle being -101.3 (7)°.The most prominent interactions in the crystal packing is a pair of N—H···O hydrogen bonds between inversion related molecules leading to an eight-membered {···HNCO}2 synthon, Table 1. These are linked into a three-dimensional architecture by C—H···N, C—H···Br and C—H···π interactions, Fig. 2 and Table 1.
For background to the cardiotonic and anti-inflammatory properties of octahydroquinoline-3-carbonitrile derivatives, see: Behit & Baraka (2005); Girgis et al. (2007). For a related structure, see: Asiri et al. (2012). For additional
see: Cremer & Pople (1975).Data collection: CrysAlis PRO (Agilent, 2012); cell
CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis PRO (Agilent, 2012); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C17H17BrN2O | F(000) = 704 |
Mr = 345.24 | Dx = 1.492 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2464 reflections |
a = 11.1959 (10) Å | θ = 2.3–27.5° |
b = 7.5902 (6) Å | µ = 2.68 mm−1 |
c = 18.3886 (12) Å | T = 100 K |
β = 100.453 (8)° | Plate, light-yellow |
V = 1536.7 (2) Å3 | 0.40 × 0.20 × 0.02 mm |
Z = 4 |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3549 independent reflections |
Radiation source: SuperNova (Mo) X-ray Source | 2296 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.052 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 27.6°, θmin = 2.6° |
ω scan | h = −14→9 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2012) | k = −9→9 |
Tmin = 0.581, Tmax = 1.000 | l = −22→23 |
9883 measured reflections |
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)] = 0.063 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.173 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0744P)2 + 2.0179P] where P = (Fo2 + 2Fc2)/3 |
3549 reflections | (Δ/σ)max < 0.001 |
199 parameters | Δρmax = 0.87 e Å−3 |
22 restraints | Δρmin = −0.43 e Å−3 |
C17H17BrN2O | V = 1536.7 (2) Å3 |
Mr = 345.24 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.1959 (10) Å | µ = 2.68 mm−1 |
b = 7.5902 (6) Å | T = 100 K |
c = 18.3886 (12) Å | 0.40 × 0.20 × 0.02 mm |
β = 100.453 (8)° |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3549 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2012) | 2296 reflections with I > 2σ(I) |
Tmin = 0.581, Tmax = 1.000 | Rint = 0.052 |
9883 measured reflections |
R[F2 > 2σ(F2)] = 0.063 | 22 restraints |
wR(F2) = 0.173 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.87 e Å−3 |
3549 reflections | Δρmin = −0.43 e Å−3 |
199 parameters |
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. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Br1 | 0.06147 (5) | 0.90018 (7) | 0.92341 (3) | 0.0586 (2) | |
O1 | 0.4933 (5) | 0.4661 (6) | 0.5872 (2) | 0.0912 (16) | |
N1 | 0.4052 (4) | 0.7076 (6) | 0.5296 (2) | 0.0576 (12) | |
H1n | 0.4373 | 0.6809 | 0.4907 | 0.069* | |
N2 | 0.3645 (6) | 0.3614 (6) | 0.7319 (3) | 0.0836 (18) | |
C1 | 0.3778 (6) | 0.9254 (7) | 0.3984 (3) | 0.0579 (14) | |
H1A | 0.3554 | 1.0180 | 0.3613 | 0.087* | 0.50 |
H1B | 0.3492 | 0.8112 | 0.3771 | 0.087* | 0.50 |
H1C | 0.4663 | 0.9223 | 0.4136 | 0.087* | 0.50 |
H1D | 0.4252 | 0.8163 | 0.4067 | 0.087* | 0.50 |
H1E | 0.4314 | 1.0231 | 0.3909 | 0.087* | 0.50 |
H1F | 0.3143 | 0.9120 | 0.3544 | 0.087* | 0.50 |
C2 | 0.3211 (5) | 0.9625 (7) | 0.4635 (3) | 0.0585 (14) | |
C3 | 0.2661 (15) | 1.1429 (16) | 0.4681 (7) | 0.061 (4) | 0.50 |
H3A | 0.3222 | 1.2288 | 0.4516 | 0.073* | 0.50 |
H3B | 0.1900 | 1.1461 | 0.4311 | 0.073* | 0.50 |
C4 | 0.2372 (13) | 1.2098 (17) | 0.5380 (6) | 0.063 (3) | 0.50 |
H4A | 0.3078 | 1.2763 | 0.5647 | 0.075* | 0.50 |
H4B | 0.1679 | 1.2925 | 0.5268 | 0.075* | 0.50 |
C5 | 0.2067 (11) | 1.0704 (13) | 0.5856 (8) | 0.055 (4) | 0.50 |
H5A | 0.1212 | 1.0358 | 0.5676 | 0.066* | 0.50 |
H5B | 0.2114 | 1.1197 | 0.6359 | 0.066* | 0.50 |
C3' | 0.2305 (15) | 1.1102 (18) | 0.4484 (7) | 0.061 (4) | 0.50 |
H3C | 0.2712 | 1.2160 | 0.4330 | 0.073* | 0.50 |
H3D | 0.1650 | 1.0762 | 0.4071 | 0.073* | 0.50 |
C4' | 0.1773 (13) | 1.1532 (17) | 0.5133 (7) | 0.063 (3) | 0.50 |
H4C | 0.2227 | 1.2550 | 0.5382 | 0.075* | 0.50 |
H4D | 0.0930 | 1.1935 | 0.4952 | 0.075* | 0.50 |
C5' | 0.1727 (10) | 1.0196 (15) | 0.5692 (8) | 0.055 (4) | 0.50 |
H5C | 0.1035 | 0.9404 | 0.5508 | 0.066* | 0.50 |
H5D | 0.1547 | 1.0790 | 0.6139 | 0.066* | 0.50 |
C6 | 0.2820 (6) | 0.9091 (8) | 0.5917 (3) | 0.075 (2) | |
H6 | 0.3575 | 0.9591 | 0.6222 | 0.090* | 0.50 |
H6' | 0.3437 | 0.9871 | 0.6221 | 0.090* | 0.50 |
C7 | 0.3338 (5) | 0.8612 (7) | 0.5242 (3) | 0.0543 (14) | |
C8 | 0.4298 (6) | 0.5976 (8) | 0.5872 (3) | 0.0675 (18) | |
C9 | 0.3741 (6) | 0.6431 (8) | 0.6547 (3) | 0.0667 (17) | |
H9 | 0.4373 | 0.7148 | 0.6872 | 0.080* | |
C10 | 0.2671 (5) | 0.7576 (6) | 0.6390 (2) | 0.0457 (11) | |
H10 | 0.2039 | 0.6833 | 0.6079 | 0.055* | |
C11 | 0.3637 (5) | 0.4810 (7) | 0.6963 (2) | 0.0522 (13) | |
C12 | 0.2137 (4) | 0.7995 (6) | 0.7068 (2) | 0.0423 (11) | |
C13 | 0.1125 (6) | 0.7135 (9) | 0.7198 (3) | 0.0698 (18) | |
H13 | 0.0740 | 0.6294 | 0.6850 | 0.084* | |
C14 | 0.0646 (5) | 0.7472 (9) | 0.7836 (3) | 0.0704 (18) | |
H14 | −0.0070 | 0.6887 | 0.7914 | 0.085* | |
C15 | 0.1213 (5) | 0.8642 (6) | 0.8342 (2) | 0.0447 (11) | |
C16 | 0.2224 (5) | 0.9533 (7) | 0.8224 (3) | 0.0507 (12) | |
H16 | 0.2602 | 1.0378 | 0.8573 | 0.061* | |
C17 | 0.2689 (5) | 0.9188 (6) | 0.7589 (3) | 0.0476 (12) | |
H17 | 0.3401 | 0.9784 | 0.7511 | 0.057* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.0719 (4) | 0.0740 (4) | 0.0378 (3) | 0.0033 (3) | 0.0312 (3) | −0.0034 (2) |
O1 | 0.134 (4) | 0.098 (3) | 0.057 (2) | 0.072 (3) | 0.058 (3) | 0.033 (2) |
N1 | 0.072 (3) | 0.068 (3) | 0.044 (2) | 0.031 (2) | 0.041 (2) | 0.020 (2) |
N2 | 0.153 (6) | 0.055 (3) | 0.057 (3) | 0.021 (3) | 0.057 (3) | 0.010 (2) |
C1 | 0.076 (4) | 0.061 (3) | 0.043 (3) | −0.003 (3) | 0.028 (3) | 0.007 (2) |
C2 | 0.066 (4) | 0.068 (3) | 0.050 (3) | 0.016 (3) | 0.035 (3) | 0.022 (3) |
C3 | 0.072 (8) | 0.073 (5) | 0.041 (6) | 0.023 (5) | 0.020 (5) | 0.018 (4) |
C4 | 0.069 (7) | 0.066 (6) | 0.061 (6) | 0.030 (5) | 0.032 (5) | 0.021 (4) |
C5 | 0.071 (6) | 0.052 (6) | 0.051 (6) | 0.017 (5) | 0.032 (5) | 0.006 (5) |
C3' | 0.072 (8) | 0.073 (5) | 0.041 (6) | 0.023 (5) | 0.020 (5) | 0.018 (4) |
C4' | 0.069 (7) | 0.066 (6) | 0.061 (6) | 0.030 (5) | 0.032 (5) | 0.021 (4) |
C5' | 0.071 (6) | 0.052 (6) | 0.051 (6) | 0.017 (5) | 0.032 (5) | 0.006 (5) |
C6 | 0.090 (5) | 0.090 (4) | 0.062 (3) | 0.047 (4) | 0.058 (3) | 0.040 (3) |
C7 | 0.060 (3) | 0.067 (3) | 0.045 (3) | 0.024 (3) | 0.035 (2) | 0.017 (2) |
C8 | 0.085 (4) | 0.077 (4) | 0.051 (3) | 0.042 (3) | 0.041 (3) | 0.019 (3) |
C9 | 0.096 (5) | 0.066 (3) | 0.050 (3) | 0.028 (3) | 0.043 (3) | 0.017 (3) |
C10 | 0.064 (3) | 0.044 (3) | 0.034 (2) | 0.004 (2) | 0.023 (2) | 0.000 (2) |
C11 | 0.090 (4) | 0.044 (3) | 0.031 (2) | 0.009 (3) | 0.032 (2) | 0.000 (2) |
C12 | 0.057 (3) | 0.043 (2) | 0.032 (2) | −0.001 (2) | 0.021 (2) | 0.0019 (19) |
C13 | 0.079 (4) | 0.096 (4) | 0.043 (3) | −0.039 (4) | 0.034 (3) | −0.027 (3) |
C14 | 0.070 (4) | 0.100 (5) | 0.049 (3) | −0.039 (3) | 0.032 (3) | −0.020 (3) |
C15 | 0.048 (3) | 0.056 (3) | 0.035 (2) | 0.002 (2) | 0.022 (2) | −0.002 (2) |
C16 | 0.058 (3) | 0.053 (3) | 0.046 (3) | −0.001 (2) | 0.024 (2) | −0.011 (2) |
C17 | 0.059 (3) | 0.041 (2) | 0.051 (3) | −0.004 (2) | 0.032 (2) | −0.003 (2) |
Br1—C15 | 1.900 (4) | C3'—H3D | 0.9900 |
O1—C8 | 1.225 (6) | C4'—C5' | 1.451 (10) |
N1—C8 | 1.336 (6) | C4'—H4C | 0.9900 |
N1—C7 | 1.407 (6) | C4'—H4D | 0.9900 |
N1—H1n | 0.8800 | C5'—C6 | 1.480 (9) |
N2—C11 | 1.118 (6) | C5'—H5C | 0.9900 |
C1—C2 | 1.481 (7) | C5'—H5D | 0.9900 |
C1—H1A | 0.9800 | C6—C10 | 1.469 (7) |
C1—H1B | 0.9800 | C6—C7 | 1.507 (7) |
C1—H1C | 0.9800 | C6—H6 | 1.0000 |
C1—H1D | 0.9800 | C6—H6' | 1.0000 |
C1—H1E | 0.9800 | C8—C9 | 1.527 (7) |
C1—H1F | 0.9800 | C9—C11 | 1.465 (7) |
C2—C7 | 1.342 (7) | C9—C10 | 1.465 (7) |
C2—C3' | 1.503 (9) | C9—H9 | 1.0000 |
C2—C3 | 1.510 (9) | C10—C12 | 1.511 (6) |
C3—C4 | 1.471 (10) | C10—H10 | 1.0000 |
C3—H3A | 0.9900 | C12—C13 | 1.366 (7) |
C3—H3B | 0.9900 | C12—C17 | 1.380 (7) |
C4—C5 | 1.454 (10) | C13—C14 | 1.398 (7) |
C4—H4A | 0.9900 | C13—H13 | 0.9500 |
C4—H4B | 0.9900 | C14—C15 | 1.358 (7) |
C5—C6 | 1.479 (9) | C14—H14 | 0.9500 |
C5—H5A | 0.9900 | C15—C16 | 1.369 (7) |
C5—H5B | 0.9900 | C16—C17 | 1.387 (6) |
C3'—C4' | 1.464 (10) | C16—H16 | 0.9500 |
C3'—H3C | 0.9900 | C17—H17 | 0.9500 |
C8—N1—C7 | 127.3 (4) | H4C—C4'—H4D | 107.0 |
C8—N1—H1n | 116.3 | C4'—C5'—C6 | 117.4 (10) |
C7—N1—H1n | 116.3 | C4'—C5'—H5C | 107.9 |
C2—C1—H1A | 109.5 | C6—C5'—H5C | 107.9 |
C2—C1—H1B | 109.5 | C4'—C5'—H5D | 107.9 |
H1A—C1—H1B | 109.5 | C6—C5'—H5D | 107.9 |
C2—C1—H1C | 109.5 | H5C—C5'—H5D | 107.2 |
H1A—C1—H1C | 109.5 | C10—C6—C5' | 115.6 (7) |
H1B—C1—H1C | 109.5 | C10—C6—C5 | 124.6 (6) |
C2—C1—H1D | 109.5 | C5'—C6—C5 | 22.9 (9) |
H1A—C1—H1D | 141.1 | C10—C6—C7 | 113.7 (5) |
H1B—C1—H1D | 56.3 | C5'—C6—C7 | 109.2 (7) |
H1C—C1—H1D | 56.3 | C5—C6—C7 | 115.9 (6) |
C2—C1—H1E | 109.5 | C10—C6—H6 | 98.1 |
H1A—C1—H1E | 56.3 | C5'—C6—H6 | 120.9 |
H1B—C1—H1E | 141.1 | C5—C6—H6 | 98.1 |
H1C—C1—H1E | 56.3 | C7—C6—H6 | 98.1 |
H1D—C1—H1E | 109.5 | C10—C6—H6' | 105.9 |
C2—C1—H1F | 109.5 | C5'—C6—H6' | 105.9 |
H1A—C1—H1F | 56.3 | C7—C6—H6' | 105.9 |
H1B—C1—H1F | 56.3 | C2—C7—N1 | 120.4 (4) |
H1C—C1—H1F | 141.1 | C2—C7—C6 | 123.3 (5) |
H1D—C1—H1F | 109.5 | N1—C7—C6 | 116.1 (4) |
H1E—C1—H1F | 109.5 | O1—C8—N1 | 123.1 (5) |
C7—C2—C1 | 124.6 (5) | O1—C8—C9 | 120.4 (5) |
C7—C2—C3' | 123.2 (7) | N1—C8—C9 | 116.6 (4) |
C1—C2—C3' | 111.5 (6) | C11—C9—C10 | 117.5 (5) |
C7—C2—C3 | 117.1 (6) | C11—C9—C8 | 108.5 (4) |
C1—C2—C3 | 117.2 (6) | C10—C9—C8 | 114.4 (4) |
C4—C3—C2 | 121.3 (10) | C11—C9—H9 | 105.0 |
C4—C3—H3A | 107.0 | C10—C9—H9 | 105.0 |
C2—C3—H3A | 107.0 | C8—C9—H9 | 105.0 |
C4—C3—H3B | 107.0 | C9—C10—C6 | 113.8 (5) |
C2—C3—H3B | 107.0 | C9—C10—C12 | 113.2 (4) |
H3A—C3—H3B | 106.7 | C6—C10—C12 | 115.4 (4) |
C5—C4—C3 | 112.8 (13) | C9—C10—H10 | 104.3 |
C5—C4—H4A | 109.0 | C6—C10—H10 | 104.3 |
C3—C4—H4A | 109.0 | C12—C10—H10 | 104.3 |
C5—C4—H4B | 109.0 | N2—C11—C9 | 174.1 (7) |
C3—C4—H4B | 109.0 | C13—C12—C17 | 118.3 (4) |
H4A—C4—H4B | 107.8 | C13—C12—C10 | 120.6 (4) |
C4—C5—C6 | 117.1 (10) | C17—C12—C10 | 121.1 (4) |
C4—C5—H5A | 108.0 | C12—C13—C14 | 121.0 (5) |
C6—C5—H5A | 108.0 | C12—C13—H13 | 119.5 |
C4—C5—H5B | 108.0 | C14—C13—H13 | 119.5 |
C6—C5—H5B | 108.0 | C15—C14—C13 | 119.5 (5) |
H5A—C5—H5B | 107.3 | C15—C14—H14 | 120.3 |
C4'—C3'—C2 | 112.1 (9) | C13—C14—H14 | 120.3 |
C4'—C3'—H3C | 109.2 | C14—C15—C16 | 120.7 (4) |
C2—C3'—H3C | 109.2 | C14—C15—Br1 | 119.4 (4) |
C4'—C3'—H3D | 109.2 | C16—C15—Br1 | 119.8 (4) |
C2—C3'—H3D | 109.2 | C15—C16—C17 | 119.2 (5) |
H3C—C3'—H3D | 107.9 | C15—C16—H16 | 120.4 |
C5'—C4'—C3' | 119.5 (12) | C17—C16—H16 | 120.4 |
C5'—C4'—H4C | 107.4 | C12—C17—C16 | 121.3 (5) |
C3'—C4'—H4C | 107.4 | C12—C17—H17 | 119.4 |
C5'—C4'—H4D | 107.4 | C16—C17—H17 | 119.4 |
C3'—C4'—H4D | 107.4 | ||
C7—C2—C3—C4 | 4.8 (19) | C7—N1—C8—O1 | −179.9 (7) |
C1—C2—C3—C4 | −163.6 (12) | C7—N1—C8—C9 | 0.2 (10) |
C3'—C2—C3—C4 | 117 (4) | O1—C8—C9—C11 | −24.4 (9) |
C2—C3—C4—C5 | −30 (2) | N1—C8—C9—C11 | 155.5 (6) |
C3—C4—C5—C6 | 42.1 (18) | O1—C8—C9—C10 | −157.8 (7) |
C7—C2—C3'—C4' | 11.8 (19) | N1—C8—C9—C10 | 22.1 (9) |
C1—C2—C3'—C4' | −177.7 (11) | C11—C9—C10—C6 | −175.0 (5) |
C3—C2—C3'—C4' | −67 (2) | C8—C9—C10—C6 | −46.0 (8) |
C2—C3'—C4'—C5' | −25 (2) | C11—C9—C10—C12 | 50.7 (7) |
C3'—C4'—C5'—C6 | 43 (2) | C8—C9—C10—C12 | 179.7 (5) |
C4'—C5'—C6—C10 | −170.4 (10) | C5'—C6—C10—C9 | 174.9 (8) |
C4'—C5'—C6—C5 | 71 (2) | C5—C6—C10—C9 | −160.7 (9) |
C4'—C5'—C6—C7 | −40.8 (15) | C7—C6—C10—C9 | 47.5 (8) |
C4—C5—C6—C10 | 177.9 (10) | C5'—C6—C10—C12 | −51.8 (10) |
C4—C5—C6—C5' | −109 (3) | C5—C6—C10—C12 | −27.4 (12) |
C4—C5—C6—C7 | −30.9 (16) | C7—C6—C10—C12 | −179.2 (5) |
C1—C2—C7—N1 | 0.2 (10) | C9—C10—C12—C13 | −101.3 (7) |
C3'—C2—C7—N1 | 169.4 (10) | C6—C10—C12—C13 | 125.1 (6) |
C3—C2—C7—N1 | −167.4 (9) | C9—C10—C12—C17 | 75.4 (6) |
C1—C2—C7—C6 | 175.6 (6) | C6—C10—C12—C17 | −58.2 (7) |
C3'—C2—C7—C6 | −15.1 (13) | C17—C12—C13—C14 | 1.1 (9) |
C3—C2—C7—C6 | 8.1 (12) | C10—C12—C13—C14 | 177.9 (6) |
C8—N1—C7—C2 | 177.4 (6) | C12—C13—C14—C15 | −1.6 (10) |
C8—N1—C7—C6 | 1.7 (9) | C13—C14—C15—C16 | 2.0 (9) |
C10—C6—C7—C2 | 158.9 (6) | C13—C14—C15—Br1 | −176.5 (5) |
C5'—C6—C7—C2 | 28.2 (11) | C14—C15—C16—C17 | −2.0 (8) |
C5—C6—C7—C2 | 4.5 (12) | Br1—C15—C16—C17 | 176.6 (4) |
C10—C6—C7—N1 | −25.4 (8) | C13—C12—C17—C16 | −1.0 (8) |
C5'—C6—C7—N1 | −156.1 (7) | C10—C12—C17—C16 | −177.8 (4) |
C5—C6—C7—N1 | −179.8 (8) | C15—C16—C17—C12 | 1.4 (8) |
Cg1 is the centroid of the C12–C17 benzene ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1n···O1i | 0.88 | 2.08 | 2.921 (5) | 161 |
C1—H1A···N2ii | 0.98 | 2.57 | 3.442 (8) | 148 |
C13—H13···Br1iii | 0.95 | 2.86 | 3.811 (6) | 174 |
C1—H1B···Cg1iv | 0.98 | 2.78 | 3.590 (6) | 141 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) x, −y+3/2, z−1/2; (iii) −x, y−1/2, −z+3/2; (iv) x, −y+1/2, z−3/2. |
Experimental details
Crystal data | |
Chemical formula | C17H17BrN2O |
Mr | 345.24 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 11.1959 (10), 7.5902 (6), 18.3886 (12) |
β (°) | 100.453 (8) |
V (Å3) | 1536.7 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 2.68 |
Crystal size (mm) | 0.40 × 0.20 × 0.02 |
Data collection | |
Diffractometer | Agilent SuperNova Dual diffractometer with an Atlas detector |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2012) |
Tmin, Tmax | 0.581, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9883, 3549, 2296 |
Rint | 0.052 |
(sin θ/λ)max (Å−1) | 0.651 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.063, 0.173, 1.02 |
No. of reflections | 3549 |
No. of parameters | 199 |
No. of restraints | 22 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.87, −0.43 |
Computer programs: CrysAlis PRO (Agilent, 2012), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
Cg1 is the centroid of the C12–C17 benzene ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1n···O1i | 0.88 | 2.08 | 2.921 (5) | 161 |
C1—H1A···N2ii | 0.98 | 2.57 | 3.442 (8) | 148 |
C13—H13···Br1iii | 0.95 | 2.86 | 3.811 (6) | 174 |
C1—H1B···Cg1iv | 0.98 | 2.78 | 3.590 (6) | 141 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) x, −y+3/2, z−1/2; (iii) −x, y−1/2, −z+3/2; (iv) x, −y+1/2, z−3/2. |
Footnotes
‡Additional correspondence author, e-mail: aasiri2@kau.edu.sa.
Acknowledgements
The authors are grateful to King Abdulaziz University for providing the research facilities. The authors also thank the Ministry of Higher Education (Malaysia) for funding structural studies through the High-Impact Research scheme (UM.C/HIR/MOHE/SC/12).
References
Agilent (2012). CrysAlis PRO. Agilent Technologies, Yarnton, Oxfordshire, England. Google Scholar
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
In continuation of our structural studies on octahydroquinoline-3-carbonitrile derivatives (Asiri et al., 2012), the crystal and molecular structure of the title compound, (I), was investigated. Interest in this class of compound stems from their demonstrated cardiotonic and anti-inflammatory properties (Behit & Baraka, 2005; Girgis et al., 2007).
In (I), Fig. 1, the N1-containing ring of the fused octahydroquinoline fused-ring system, adopts an envelope conformation with the C10 atom, carrying the phenyl ring, lying -0.531 (9)° out of the plane defined by the remaining five atoms [r.m.s. deviation = 0.0099 Å]. Owing to two conformations of equal weight, the assignment of conformation of the C6 ring is somewhat problematic but a conformational analysis indicates an intermediate conformation between screw-boat and half-chair (Cremer & Pople, 1975). The phenyl ring is almost orthogonal to the ring to which it is attached with the C9—C10—C12—C13 torsion angle being -101.3 (7)°.
The most prominent interactions in the crystal packing is a pair of N—H···O hydrogen bonds between inversion related molecules leading to an eight-membered {···HNCO}2 synthon, Table 1. These are linked into a three-dimensional architecture by C—H···N, C—H···Br and C—H···π interactions, Fig. 2 and Table 1.