organic compounds
5-Chloro-N′-cyclohexylidene-3-methyl-1H-indole-2-carbohydrazide
aDepartment of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey, bDepartment of Pharmaceutical Chemistry, Faculty of Pharmacy, Istanbul University, 34116 Beyazit, Istanbul, Turkey, and cDepartment of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, 55139 Samsun, Turkey
*Correspondence e-mail: akkurt@erciyes.edu.tr
In the title compound, C16H18ClN3O, the cyclohexane ring adopts a distorted chair conformation. In the crystal, pairs of molecules are linked by N—H⋯O hydrogen bonds into inversion dimers, forming R22(10) ring motifs. These dimers are connected through C—H⋯N hydrogen bonds into chains along the a axis, forming layers parallel to (101).
Related literature
For the design, synthesis and characterization of some bioactive indole derivatives, see: Akkurt et al. (2009, 2010); Cihan-Üstündağ & Çapan (2012); Güzel et al. (2006); Kaynak et al. (2005). For puckering analysis, see: Cremer & Pople (1975). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
|
|
Data collection: X-AREA (Stoe & Cie, 2002); cell X-AREA; data reduction: X-RED32 (Stoe & Cie, 2002); 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, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supporting information
https://doi.org/10.1107/S1600536813016899/sj5335sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813016899/sj5335Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536813016899/sj5335Isup3.cml
A mixture of 5-chloro-3-methyl-1H-indole-2-carbohydrazide (0.005 mol) and cyclohexanone (0.006 mol) in 15 ml of absolute ethanol was heated under reflux for 3 h. The crude product obtained on cooling was filtered and purified by recrystallization from ethanol. [Yield: 91.4%, m.p.: 505–507 K].
H atoms bonded to C atoms were positioned geometrically with C—H = 0.93, 0.96 and 0.97 Å, and refined using a riding model with Uiso(H) = 1.2 or 1.5Ueq(C). The H atom (H1) of the one of the two amide groups was positioned geometrically with N—H = 0.86 Å, and refined using a riding model with Uiso(H) = 1.2Ueq(N). The H atom (H2A) of the other amide group was found in a difference Fourier map, restrained with N—H = 0.82 (3) Å and refined with Uiso = 1.2Ueq(N).
Cyclohexylidenehydrazides are of interest, both as potential intermediates for the synthesis of novel heterocyclic systems and as pharmacologically active agents. We have recently reported on the synthesis, antitituberculosis and anticancer properties of cyclohexylidenehydrazides and spirothiazolidinones with an indole core (Cihan-Üstündağ & Çapan, 2012). As a continuation of our program directed towards the design, synthesis and characterization of bioactive indole derivatives (Akkurt et al., 2009, 2010; Güzel et al., 2006; Kaynak et al., 2005), we report here the synthesis, spectral and analytical data and
of the title compound.In the title compound (I), (Fig. 1), the nine-membered 1H-indole ring (N1/C1–C8) is essentially planar with maximum deviations of 0.019 (3) Å for C3, 0.017 (3) Å for C7 and -0.017 (3) Å for C1]. The cyclohexane ring (C11–C16) of (I) adopts a distorted chair conformation [the puckering parameters (Cremer & Pople, 1975) are QT = 0.508 (4) Å, θ = 10.2 (5)° and φ = 193 (2) °]. The C7–C8–C10–N2, C7–C8–C10–O1, N1–C8–C10–O1, N1–C8–C10–N2, C8–C10–N2–N3 and C10–N2–N3–C11 torsion angles are -19.5 (5), 158.3 (3), -14.4 (4), 167.7 (3), -179.6 (2) and -172.8 (3)°, respectively.
In the crystal, pairs of N—H···O hydrogen bonds link molecules into inversion dimers, with the R22(10) ring motifs (Table 1, Fig. 2; Bernstein et al., 1995). These dimers connect to each other through C—H···N hydrogen bonds as chains along the a axis, forming layers parallel to the (101) plane. In the π-π and C—H···π interactions were not observed.
For the design, synthesis and characterization of some bioactive indole derivatives, see: Akkurt et al. (2009, 2010); Cihan-Üstündağ & Çapan (2012); Güzel et al. (2006); Kaynak et al. (2005). For puckering analysis, see: Cremer & Pople (1975). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Data collection: X-AREA (Stoe & Cie, 2002); cell
X-AREA (Stoe & Cie, 2002); data reduction: X-RED32 (Stoe & Cie, 2002); 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, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).C16H18ClN3O | Z = 2 |
Mr = 303.78 | F(000) = 320 |
Triclinic, P1 | Dx = 1.321 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 5.2727 (5) Å | Cell parameters from 9705 reflections |
b = 9.7977 (9) Å | θ = 2.1–28.0° |
c = 15.2380 (15) Å | µ = 0.25 mm−1 |
α = 102.229 (7)° | T = 296 K |
β = 95.732 (8)° | Plate, colourless |
γ = 92.332 (7)° | 0.76 × 0.36 × 0.02 mm |
V = 763.94 (13) Å3 |
Stoe IPDS 2 diffractometer | 2929 independent reflections |
Radiation source: sealed X-ray tube, 12 x 0.4 mm long-fine focus | 1684 reflections with I > 2σ(I) |
Plane graphite monochromator | Rint = 0.065 |
Detector resolution: 6.67 pixels mm-1 | θmax = 26.0°, θmin = 2.1° |
ω scans | h = −6→6 |
Absorption correction: integration (X-RED32; Stoe & Cie, 2002) | k = −12→12 |
Tmin = 0.831, Tmax = 0.995 | l = −18→18 |
7177 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)] = 0.053 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.129 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0554P)2] where P = (Fo2 + 2Fc2)/3 |
2929 reflections | (Δ/σ)max < 0.001 |
195 parameters | Δρmax = 0.15 e Å−3 |
0 restraints | Δρmin = −0.16 e Å−3 |
C16H18ClN3O | γ = 92.332 (7)° |
Mr = 303.78 | V = 763.94 (13) Å3 |
Triclinic, P1 | Z = 2 |
a = 5.2727 (5) Å | Mo Kα radiation |
b = 9.7977 (9) Å | µ = 0.25 mm−1 |
c = 15.2380 (15) Å | T = 296 K |
α = 102.229 (7)° | 0.76 × 0.36 × 0.02 mm |
β = 95.732 (8)° |
Stoe IPDS 2 diffractometer | 2929 independent reflections |
Absorption correction: integration (X-RED32; Stoe & Cie, 2002) | 1684 reflections with I > 2σ(I) |
Tmin = 0.831, Tmax = 0.995 | Rint = 0.065 |
7177 measured reflections |
R[F2 > 2σ(F2)] = 0.053 | 0 restraints |
wR(F2) = 0.129 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.15 e Å−3 |
2929 reflections | Δρmin = −0.16 e Å−3 |
195 parameters |
Experimental. UV (EtOH) λmax(nm)(ε) = 210.2 (11298); 230.6 (15341); 303.4 (14665). IR(KBr)ν = 3278 (N—H); 1639 (C=O);1624, 1537, 1514, 1471 (C=N, C=C) cm-1. 1H-NMR (500 MHz) (DMSO-d6 / TMS) d =1.56–1.72 (6H, m, CH2-cyc.*), 2.32 (2H, t, J=6.8 Hz, CH2-cyc.) 2.42–2.48 (5H, m, CH2-cyc. and 3-CH3-ind.*), 7.20 (1H, dd, J=8.7, 1.9 Hz, H6-ind.), 7.41 (1H, d, J=8.7 Hz, H7-ind.), 7.66 (1H, d, J=1.9 Hz, H4-ind.), 10.30 (1H, s, CONH), 11.50 (1H, s, NH-ind.) p.p.m.. MS (ESI–) m/z (%) = 302 ([M—H]-, 100). Analysis calculated for C16H18ClN3O: C 63.26, H 5.97, N 13.83%. Found: C 63.12, H 5.97, N 13.86%.(*cyc. = cyclohexylidene, ind. = indole). |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
Refinement. Refinement on F2 for ALL reflections except those flagged by the user for potential systematic errors. Weighted R-factors wR and all goodnesses of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The observed criterion of F2 > σ(F2) is used only for calculating -R-factor-obs 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 | ||
Cl1 | 0.5891 (2) | 0.46594 (11) | 0.20802 (7) | 0.1086 (4) | |
O1 | 0.1519 (4) | 0.0786 (2) | 0.61618 (12) | 0.0717 (7) | |
N1 | 0.2262 (4) | 0.1409 (2) | 0.45351 (13) | 0.0589 (8) | |
N2 | 0.5585 (5) | 0.1489 (3) | 0.67430 (15) | 0.0597 (8) | |
N3 | 0.5305 (4) | 0.1037 (2) | 0.75354 (15) | 0.0628 (8) | |
C1 | 0.2826 (5) | 0.2059 (3) | 0.38687 (17) | 0.0538 (8) | |
C2 | 0.1513 (6) | 0.1988 (3) | 0.30110 (18) | 0.0654 (10) | |
C3 | 0.2502 (6) | 0.2795 (3) | 0.24870 (19) | 0.0705 (11) | |
C4 | 0.4744 (6) | 0.3636 (3) | 0.27889 (19) | 0.0691 (11) | |
C5 | 0.6043 (5) | 0.3719 (3) | 0.3623 (2) | 0.0648 (10) | |
C6 | 0.5060 (4) | 0.2920 (3) | 0.41855 (17) | 0.0508 (8) | |
C7 | 0.5838 (4) | 0.2775 (3) | 0.50912 (16) | 0.0512 (8) | |
C8 | 0.4070 (5) | 0.1827 (3) | 0.52722 (16) | 0.0511 (8) | |
C9 | 0.8061 (5) | 0.3606 (3) | 0.5689 (2) | 0.0686 (10) | |
C10 | 0.3624 (5) | 0.1311 (3) | 0.60883 (17) | 0.0543 (9) | |
C11 | 0.7122 (5) | 0.1360 (3) | 0.81721 (18) | 0.0597 (9) | |
C12 | 0.9530 (6) | 0.2231 (4) | 0.8204 (2) | 0.0866 (13) | |
C13 | 1.0168 (7) | 0.3247 (4) | 0.9086 (2) | 0.0993 (16) | |
C14 | 1.0052 (7) | 0.2603 (4) | 0.9900 (2) | 0.0876 (13) | |
C15 | 0.7463 (6) | 0.1875 (4) | 0.9862 (2) | 0.0837 (13) | |
C16 | 0.6818 (6) | 0.0800 (4) | 0.9003 (2) | 0.0820 (11) | |
H1 | 0.09730 | 0.08260 | 0.45020 | 0.0710* | |
H2 | 0.00300 | 0.14140 | 0.28090 | 0.0790* | |
H2A | 0.701 (5) | 0.174 (3) | 0.6650 (17) | 0.054 (8)* | |
H3 | 0.16670 | 0.27840 | 0.19180 | 0.0850* | |
H5 | 0.75350 | 0.42900 | 0.38110 | 0.0780* | |
H9A | 0.85040 | 0.44140 | 0.54590 | 0.1030* | |
H9B | 0.94970 | 0.30360 | 0.56980 | 0.1030* | |
H9C | 0.76010 | 0.39010 | 0.62910 | 0.1030* | |
H12A | 0.93570 | 0.27410 | 0.77230 | 0.1040* | |
H12B | 1.09240 | 0.16220 | 0.80990 | 0.1040* | |
H13A | 0.89910 | 0.39870 | 0.91220 | 0.1190* | |
H13B | 1.18740 | 0.36690 | 0.91050 | 0.1190* | |
H14A | 1.13590 | 0.19360 | 0.99100 | 0.1050* | |
H14B | 1.03740 | 0.33270 | 1.04480 | 0.1050* | |
H15A | 0.74350 | 0.14270 | 1.03710 | 0.1010* | |
H15B | 0.61810 | 0.25620 | 0.99110 | 0.1010* | |
H16A | 0.50660 | 0.04370 | 0.89750 | 0.0980* | |
H16B | 0.79110 | 0.00290 | 0.90090 | 0.0980* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1362 (8) | 0.1232 (8) | 0.0844 (7) | −0.0039 (6) | 0.0217 (6) | 0.0607 (6) |
O1 | 0.0767 (12) | 0.0851 (14) | 0.0498 (11) | −0.0264 (11) | −0.0034 (9) | 0.0179 (10) |
N1 | 0.0662 (13) | 0.0625 (14) | 0.0445 (12) | −0.0171 (11) | −0.0010 (10) | 0.0109 (10) |
N2 | 0.0590 (13) | 0.0774 (16) | 0.0448 (13) | −0.0043 (12) | 0.0028 (11) | 0.0210 (11) |
N3 | 0.0722 (14) | 0.0709 (15) | 0.0491 (13) | −0.0018 (12) | 0.0054 (12) | 0.0236 (12) |
C1 | 0.0654 (15) | 0.0521 (15) | 0.0427 (14) | 0.0010 (13) | 0.0064 (12) | 0.0080 (12) |
C2 | 0.0775 (17) | 0.0694 (18) | 0.0455 (15) | −0.0025 (15) | −0.0039 (14) | 0.0102 (13) |
C3 | 0.090 (2) | 0.077 (2) | 0.0444 (15) | 0.0084 (17) | 0.0005 (15) | 0.0155 (14) |
C4 | 0.0879 (19) | 0.0721 (19) | 0.0551 (18) | 0.0077 (16) | 0.0153 (16) | 0.0274 (15) |
C5 | 0.0675 (16) | 0.0657 (17) | 0.0633 (18) | −0.0028 (14) | 0.0096 (14) | 0.0193 (14) |
C6 | 0.0536 (13) | 0.0520 (15) | 0.0471 (14) | 0.0049 (12) | 0.0050 (11) | 0.0116 (12) |
C7 | 0.0511 (13) | 0.0536 (15) | 0.0463 (14) | 0.0012 (12) | 0.0006 (11) | 0.0079 (12) |
C8 | 0.0570 (14) | 0.0540 (15) | 0.0407 (14) | 0.0021 (13) | 0.0014 (11) | 0.0086 (12) |
C9 | 0.0648 (16) | 0.078 (2) | 0.0613 (17) | −0.0071 (15) | −0.0059 (14) | 0.0197 (15) |
C10 | 0.0659 (16) | 0.0502 (15) | 0.0431 (14) | −0.0023 (13) | 0.0016 (13) | 0.0054 (12) |
C11 | 0.0635 (15) | 0.0719 (18) | 0.0463 (15) | 0.0060 (14) | 0.0073 (13) | 0.0177 (13) |
C12 | 0.0652 (17) | 0.143 (3) | 0.0556 (18) | −0.0114 (19) | 0.0048 (14) | 0.0348 (19) |
C13 | 0.112 (3) | 0.122 (3) | 0.065 (2) | −0.040 (2) | −0.0189 (19) | 0.045 (2) |
C14 | 0.099 (2) | 0.112 (3) | 0.0530 (18) | −0.013 (2) | −0.0066 (17) | 0.0313 (18) |
C15 | 0.092 (2) | 0.116 (3) | 0.0491 (17) | 0.000 (2) | 0.0086 (16) | 0.0325 (18) |
C16 | 0.097 (2) | 0.092 (2) | 0.0633 (19) | −0.0084 (19) | −0.0014 (17) | 0.0386 (18) |
Cl1—C4 | 1.754 (3) | C12—C13 | 1.492 (5) |
O1—C10 | 1.230 (3) | C13—C14 | 1.511 (5) |
N1—C1 | 1.358 (3) | C14—C15 | 1.504 (5) |
N1—C8 | 1.378 (3) | C15—C16 | 1.495 (5) |
N2—N3 | 1.390 (3) | C2—H2 | 0.9300 |
N2—C10 | 1.342 (4) | C3—H3 | 0.9300 |
N3—C11 | 1.272 (3) | C5—H5 | 0.9300 |
N1—H1 | 0.8600 | C9—H9A | 0.9600 |
N2—H2A | 0.82 (3) | C9—H9B | 0.9600 |
C1—C2 | 1.403 (4) | C9—H9C | 0.9600 |
C1—C6 | 1.402 (4) | C12—H12A | 0.9700 |
C2—C3 | 1.361 (4) | C12—H12B | 0.9700 |
C3—C4 | 1.393 (4) | C13—H13A | 0.9700 |
C4—C5 | 1.367 (4) | C13—H13B | 0.9700 |
C5—C6 | 1.399 (4) | C14—H14A | 0.9700 |
C6—C7 | 1.438 (4) | C14—H14B | 0.9700 |
C7—C9 | 1.504 (4) | C15—H15A | 0.9700 |
C7—C8 | 1.377 (4) | C15—H15B | 0.9700 |
C8—C10 | 1.474 (4) | C16—H16A | 0.9700 |
C11—C16 | 1.503 (4) | C16—H16B | 0.9700 |
C11—C12 | 1.492 (4) | ||
C1—N1—C8 | 109.6 (2) | C3—C2—H2 | 121.00 |
N3—N2—C10 | 120.0 (2) | C2—C3—H3 | 119.00 |
N2—N3—C11 | 117.5 (2) | C4—C3—H3 | 120.00 |
C8—N1—H1 | 125.00 | C4—C5—H5 | 121.00 |
C1—N1—H1 | 125.00 | C6—C5—H5 | 121.00 |
N3—N2—H2A | 118.7 (18) | C7—C9—H9A | 109.00 |
C10—N2—H2A | 120.5 (18) | C7—C9—H9B | 109.00 |
N1—C1—C6 | 107.7 (2) | C7—C9—H9C | 109.00 |
C2—C1—C6 | 122.3 (3) | H9A—C9—H9B | 109.00 |
N1—C1—C2 | 130.0 (3) | H9A—C9—H9C | 109.00 |
C1—C2—C3 | 117.2 (3) | H9B—C9—H9C | 110.00 |
C2—C3—C4 | 121.1 (3) | C11—C12—H12A | 109.00 |
Cl1—C4—C3 | 118.5 (2) | C11—C12—H12B | 109.00 |
Cl1—C4—C5 | 119.0 (2) | C13—C12—H12A | 109.00 |
C3—C4—C5 | 122.5 (3) | C13—C12—H12B | 109.00 |
C4—C5—C6 | 118.0 (3) | H12A—C12—H12B | 108.00 |
C1—C6—C5 | 119.0 (2) | C12—C13—H13A | 109.00 |
C5—C6—C7 | 133.4 (2) | C12—C13—H13B | 109.00 |
C1—C6—C7 | 107.6 (2) | C14—C13—H13A | 109.00 |
C6—C7—C8 | 105.7 (2) | C14—C13—H13B | 109.00 |
C6—C7—C9 | 123.9 (2) | H13A—C13—H13B | 108.00 |
C8—C7—C9 | 130.3 (2) | C13—C14—H14A | 110.00 |
C7—C8—C10 | 133.6 (2) | C13—C14—H14B | 110.00 |
N1—C8—C7 | 109.5 (2) | C15—C14—H14A | 110.00 |
N1—C8—C10 | 116.6 (2) | C15—C14—H14B | 110.00 |
O1—C10—C8 | 120.5 (2) | H14A—C14—H14B | 108.00 |
N2—C10—C8 | 116.7 (2) | C14—C15—H15A | 109.00 |
O1—C10—N2 | 122.8 (3) | C14—C15—H15B | 109.00 |
N3—C11—C12 | 128.4 (3) | C16—C15—H15A | 109.00 |
N3—C11—C16 | 116.3 (3) | C16—C15—H15B | 109.00 |
C12—C11—C16 | 115.3 (2) | H15A—C15—H15B | 108.00 |
C11—C12—C13 | 112.6 (3) | C11—C16—H16A | 109.00 |
C12—C13—C14 | 113.9 (3) | C11—C16—H16B | 109.00 |
C13—C14—C15 | 109.9 (3) | C15—C16—H16A | 109.00 |
C14—C15—C16 | 111.7 (3) | C15—C16—H16B | 109.00 |
C11—C16—C15 | 113.3 (3) | H16A—C16—H16B | 108.00 |
C1—C2—H2 | 121.00 | ||
C1—N1—C8—C10 | 174.9 (2) | C4—C5—C6—C7 | −177.9 (3) |
C8—N1—C1—C2 | −178.3 (3) | C5—C6—C7—C9 | 3.2 (5) |
C8—N1—C1—C6 | 0.0 (3) | C5—C6—C7—C8 | 179.7 (3) |
C1—N1—C8—C7 | 0.5 (3) | C1—C6—C7—C8 | 0.8 (3) |
N3—N2—C10—C8 | 179.6 (2) | C1—C6—C7—C9 | −175.7 (2) |
N3—N2—C10—O1 | 1.8 (4) | C6—C7—C8—C10 | −173.9 (3) |
C10—N2—N3—C11 | −172.8 (3) | C9—C7—C8—C10 | 2.3 (5) |
N2—N3—C11—C16 | −177.2 (3) | C9—C7—C8—N1 | 175.4 (3) |
N2—N3—C11—C12 | 2.9 (4) | C6—C7—C8—N1 | −0.8 (3) |
N1—C1—C6—C7 | −0.5 (3) | N1—C8—C10—N2 | 167.7 (3) |
C6—C1—C2—C3 | 0.2 (4) | C7—C8—C10—O1 | 158.3 (3) |
N1—C1—C6—C5 | −179.6 (2) | C7—C8—C10—N2 | −19.5 (5) |
C2—C1—C6—C7 | 178.0 (3) | N1—C8—C10—O1 | −14.4 (4) |
C2—C1—C6—C5 | −1.1 (4) | N3—C11—C12—C13 | 136.1 (3) |
N1—C1—C2—C3 | 178.2 (3) | C16—C11—C12—C13 | −43.7 (4) |
C1—C2—C3—C4 | 1.0 (4) | N3—C11—C16—C15 | −134.0 (3) |
C2—C3—C4—Cl1 | −179.5 (2) | C12—C11—C16—C15 | 45.9 (4) |
C2—C3—C4—C5 | −1.1 (5) | C11—C12—C13—C14 | 49.1 (4) |
C3—C4—C5—C6 | 0.1 (4) | C12—C13—C14—C15 | −55.6 (4) |
Cl1—C4—C5—C6 | 178.5 (2) | C13—C14—C15—C16 | 56.2 (4) |
C4—C5—C6—C1 | 1.0 (4) | C14—C15—C16—C11 | −52.0 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.03 | 2.826 (3) | 153 |
C12—H12A···N2 | 0.97 | 2.47 | 2.842 (4) | 102 |
C12—H12B···N3ii | 0.97 | 2.59 | 3.476 (4) | 152 |
Symmetry codes: (i) −x, −y, −z+1; (ii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C16H18ClN3O |
Mr | 303.78 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 296 |
a, b, c (Å) | 5.2727 (5), 9.7977 (9), 15.2380 (15) |
α, β, γ (°) | 102.229 (7), 95.732 (8), 92.332 (7) |
V (Å3) | 763.94 (13) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.25 |
Crystal size (mm) | 0.76 × 0.36 × 0.02 |
Data collection | |
Diffractometer | Stoe IPDS 2 |
Absorption correction | Integration (X-RED32; Stoe & Cie, 2002) |
Tmin, Tmax | 0.831, 0.995 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7177, 2929, 1684 |
Rint | 0.065 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.053, 0.129, 1.01 |
No. of reflections | 2929 |
No. of parameters | 195 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.15, −0.16 |
Computer programs: X-AREA (Stoe & Cie, 2002), X-RED32 (Stoe & Cie, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012), WinGX (Farrugia, 2012).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.03 | 2.826 (3) | 153 |
C12—H12B···N3ii | 0.97 | 2.59 | 3.476 (4) | 152 |
Symmetry codes: (i) −x, −y, −z+1; (ii) x+1, y, z. |
Acknowledgements
The authors acknowledge the Faculty of Arts and Sciences, Ondokuz Mayıs University, Turkey, for the use of the Stoe IPDS 2 diffractometer (purchased under grant F.279 of the University Research Fund). This work was supported in part by the Scientific Research Projects Coordination Unit of Istanbul University (project No. 20867).
References
Akkurt, M., Çelik, Í., Cihan, G., Çapan, G. & Büyükgüngör, O. (2010). Acta Cryst. E66, o830. Web of Science CSD CrossRef IUCr Journals Google Scholar
Akkurt, M., Karaca, S., Cihan, G., Çapan, G. & Büyükgüngör, O. (2009). Acta Cryst. E65, o1009–o1010. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Cihan-Üstündağ, G. & Çapan, G. (2012). Mol. Divers. 16, 525–539. Web of Science PubMed Google Scholar
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358. CrossRef CAS Web of Science Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Güzel, O., Terzioğlu, N., Çapan, G. & Salman, A. (2006). Arkivoc, xii, 98–110. Google Scholar
Kaynak, F. B., Öztürk, D., Özbey, S. & Çapan, G. (2005). J. Mol. Struct. 740, 213–221. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Stoe & Cie (2002). X-AREA and X-RED32. Stoe & Cie, Darmstadt, Germany. Google Scholar
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.
Cyclohexylidenehydrazides are of interest, both as potential intermediates for the synthesis of novel heterocyclic systems and as pharmacologically active agents. We have recently reported on the synthesis, antitituberculosis and anticancer properties of cyclohexylidenehydrazides and spirothiazolidinones with an indole core (Cihan-Üstündağ & Çapan, 2012). As a continuation of our program directed towards the design, synthesis and characterization of bioactive indole derivatives (Akkurt et al., 2009, 2010; Güzel et al., 2006; Kaynak et al., 2005), we report here the synthesis, spectral and analytical data and crystal structure of the title compound.
In the title compound (I), (Fig. 1), the nine-membered 1H-indole ring (N1/C1–C8) is essentially planar with maximum deviations of 0.019 (3) Å for C3, 0.017 (3) Å for C7 and -0.017 (3) Å for C1]. The cyclohexane ring (C11–C16) of (I) adopts a distorted chair conformation [the puckering parameters (Cremer & Pople, 1975) are QT = 0.508 (4) Å, θ = 10.2 (5)° and φ = 193 (2) °]. The C7–C8–C10–N2, C7–C8–C10–O1, N1–C8–C10–O1, N1–C8–C10–N2, C8–C10–N2–N3 and C10–N2–N3–C11 torsion angles are -19.5 (5), 158.3 (3), -14.4 (4), 167.7 (3), -179.6 (2) and -172.8 (3)°, respectively.
In the crystal, pairs of N—H···O hydrogen bonds link molecules into inversion dimers, with the R22(10) ring motifs (Table 1, Fig. 2; Bernstein et al., 1995). These dimers connect to each other through C—H···N hydrogen bonds as chains along the a axis, forming layers parallel to the (101) plane. In the crystal structure, π-π and C—H···π interactions were not observed.