organic compounds
H-carbazol-9-yl)-N′-[(E)-4-chlorobenzylidene]propanohydrazide
of 3-(9aDepartment of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey, bDepartment of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA, cChemistry and Environmental Division, Manchester Metropolitan University, Manchester M1 5GD, England, dChemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt, eDepartment of Chemistry, Faculty of Science, Assiut University, 71515 Assiut, Egypt, and fKirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq
*Correspondence e-mail: shaabankamel@yahoo.com
In the title compound, C22H18ClN3O, the carbazole ring system is essentially planar (r.m.s deviation = 0.003 Å), and makes a dihedral angle of 9.01 (8)° with the plane of the chlorophenyl ring. In the crystal, neighbouring molecules are linked into centrosymmetric R22(8) dimers by pairs of N—H⋯O interactions and into a three-dimensional network by C—H⋯π interactions. The dimers are arranged into layers parallel to (010).
CCDC reference: 1434700
1. Related literature
For synthesis and pharmacuetical studies of carbazole containing compounds, see: Hewlins et al. (1984); Kansal & Potier (1986); Haider et al. (1998); Hirata et al. (1999); Chowdhury et al. (1978); Sakano et al. (1980); Pindur (1990); Knölker & Reddy (2002); Martin & Prasad (2006); Saturnino et al. (2003).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: CrysAlis PRO (Agilent, 2014); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SIR92 (Altomare et al., 1999); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: PLATON (Spek, 2009).
Supporting information
CCDC reference: 1434700
https://doi.org/10.1107/S2056989015020770/qm2112sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989015020770/qm2112Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989015020770/qm2112Isup3.cml
A mixture of 1.5 mmol (380 mg) of 3-(9H-carbazol-9-yl)propanehydrazide and 1.5 mmol (261 mg) of 4-chlorobenzaldehyde was heated in 10 ml of absolute ethanol and 3 ml of acetic acid catalyst. The reaction was monitored by TLC till completion after 3 h. The product which deposited on cooling, was collected, dried under vacuum and recrystallized from dioxan to give orange plates in 78% yield.
All H atoms were placed in calculated positions with N—H = 0.81 and C—H = 0.93 - 0.97 Å, and refined as riding with Uiso(H) = 1.2Ueq(C, N).
Carbazole scaffold compunds are well known for their pharmacological activities. The syntheses of carbazole derivatives in connection with the search for newer physiologically activities have been recognized in many reports (Hewlins et al., 1984; Kansal & Potier 1986; Haider et al., 1998; Hirata et al., 1999). Carbazomycin A and carbazomycin B have been found to be useful antibacterial and antifungal agents (Chowdhury et al., 1978; Sakano et al., 1980). In addition pyridocarbazoles show marked anticancer and anti-HIV activities (Pindur, 1990; Knölker & Reddy, 2002; Martin & Prasad 2006; Saturnino et al., 2003). Based on such facts we report in this study the synthesis and
of the title compound.As shown in Fig. 1, the carbazole ring system (N1/C1–C12) of the title compound is essentially planar (r.m.s deviation = 0.003 Å), and makes a dihedral angle of 9.01 (8)° with the plane of the chlorophenyl ring (C17–C22). The bond lengths and angles are within normal ranges and are similar to those reported earlier for similar compounds.
In the crystal, two molecules are associated through a pair of N—H···O intermolecular hydrogen bonds, forming a centrosymmetric dimer with R22(8) ring motifs (Table 1), into layers parallel to (010) (Fig. 2). The dimers are connected by C—H···π interactions, forming a three-dimensional network.
For synthesis and pharmacuetical studies of carbazole containing compounds, see: Hewlins et al. (1984); Kansal & Potier (1986); Haider et al. (1998); Hirata et al. (1999); Chowdhury et al. (1978); Sakano et al. (1980); Pindur (1990); Knölker & Reddy (2002); Martin & Prasad (2006); Saturnino et al. (2003).
Data collection: CrysAlis PRO (Agilent, 2014); cell
CrysAlis PRO (Agilent, 2014); data reduction: CrysAlis PRO (Agilent, 2014); program(s) used to solve structure: SIR92 (Altomare et al., 1999); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: PLATON (Spek, 2009).Fig. 1. View of the title compound with the atom numbering scheme. Displacement ellipsoids for non-H atoms are drawn at the 30% probability level. | |
Fig. 2. View of the dimers formed by N—H···O hydrogen bonds down the b axis. |
C22H18ClN3O | F(000) = 784 |
Mr = 375.84 | Dx = 1.302 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2141 reflections |
a = 16.0126 (7) Å | θ = 3.7–30.7° |
b = 7.4316 (3) Å | µ = 0.22 mm−1 |
c = 16.1654 (9) Å | T = 293 K |
β = 94.607 (4)° | Plate, orange |
V = 1917.46 (16) Å3 | 0.42 × 0.36 × 0.08 mm |
Z = 4 |
Agilent Xcalibur Eos Gemini diffractometer | 6312 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 3066 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.023 |
Detector resolution: 16.0416 pixels mm-1 | θmax = 32.8°, θmin = 3.0° |
ω scans | h = −21→24 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2014) | k = −5→10 |
Tmin = 0.847, Tmax = 1.000 | l = −23→19 |
12277 measured reflections |
Refinement on F2 | 0 restraints |
Least-squares matrix: full | Hydrogen site location: mixed |
R[F2 > 2σ(F2)] = 0.058 | H-atom parameters constrained |
wR(F2) = 0.167 | w = 1/[σ2(Fo2) + (0.0569P)2 + 0.350P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max < 0.001 |
6312 reflections | Δρmax = 0.20 e Å−3 |
244 parameters | Δρmin = −0.24 e Å−3 |
C22H18ClN3O | V = 1917.46 (16) Å3 |
Mr = 375.84 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 16.0126 (7) Å | µ = 0.22 mm−1 |
b = 7.4316 (3) Å | T = 293 K |
c = 16.1654 (9) Å | 0.42 × 0.36 × 0.08 mm |
β = 94.607 (4)° |
Agilent Xcalibur Eos Gemini diffractometer | 6312 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2014) | 3066 reflections with I > 2σ(I) |
Tmin = 0.847, Tmax = 1.000 | Rint = 0.023 |
12277 measured reflections |
R[F2 > 2σ(F2)] = 0.058 | 0 restraints |
wR(F2) = 0.167 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.20 e Å−3 |
6312 reflections | Δρmin = −0.24 e Å−3 |
244 parameters |
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 | 0.99666 (4) | −0.31996 (9) | 0.20792 (5) | 0.0942 (3) | |
O1 | 0.50960 (9) | −0.32276 (16) | 0.57559 (9) | 0.0624 (5) | |
N1 | 0.66300 (10) | 0.17932 (18) | 0.56956 (10) | 0.0547 (5) | |
N2 | 0.60196 (9) | −0.39049 (19) | 0.48394 (9) | 0.0535 (5) | |
N3 | 0.67596 (9) | −0.35405 (19) | 0.44990 (10) | 0.0511 (5) | |
C1 | 0.64514 (12) | 0.2806 (2) | 0.63777 (12) | 0.0539 (6) | |
C2 | 0.57672 (16) | 0.2737 (3) | 0.68399 (17) | 0.0803 (9) | |
C3 | 0.5780 (2) | 0.3896 (4) | 0.75265 (19) | 0.1108 (14) | |
C4 | 0.6440 (3) | 0.5071 (4) | 0.77117 (19) | 0.1203 (16) | |
C5 | 0.7099 (2) | 0.5122 (3) | 0.72554 (17) | 0.0944 (12) | |
C6 | 0.71287 (14) | 0.3976 (2) | 0.65793 (12) | 0.0609 (7) | |
C7 | 0.77393 (13) | 0.3604 (3) | 0.60061 (13) | 0.0649 (7) | |
C8 | 0.85479 (19) | 0.4244 (4) | 0.5889 (2) | 0.1049 (13) | |
C9 | 0.8972 (2) | 0.3490 (6) | 0.5267 (3) | 0.1362 (18) | |
C10 | 0.8626 (3) | 0.2141 (6) | 0.4766 (3) | 0.1306 (17) | |
C11 | 0.78534 (18) | 0.1509 (4) | 0.48540 (17) | 0.0887 (10) | |
C12 | 0.74149 (13) | 0.2233 (2) | 0.54750 (13) | 0.0578 (6) | |
C13 | 0.61339 (13) | 0.0290 (2) | 0.53681 (13) | 0.0646 (7) | |
C14 | 0.63465 (11) | −0.1461 (2) | 0.58248 (12) | 0.0522 (6) | |
C15 | 0.57783 (12) | −0.2941 (2) | 0.54829 (12) | 0.0502 (6) | |
C16 | 0.69414 (11) | −0.4544 (2) | 0.39006 (12) | 0.0546 (6) | |
C17 | 0.76989 (11) | −0.4242 (2) | 0.34818 (11) | 0.0507 (6) | |
C18 | 0.83316 (12) | −0.3082 (2) | 0.37949 (12) | 0.0567 (6) | |
C19 | 0.90254 (12) | −0.2777 (3) | 0.33665 (14) | 0.0625 (7) | |
C20 | 0.90972 (13) | −0.3622 (3) | 0.26225 (14) | 0.0626 (7) | |
C21 | 0.84950 (14) | −0.4801 (3) | 0.23015 (14) | 0.0701 (8) | |
C22 | 0.78026 (13) | −0.5105 (3) | 0.27385 (13) | 0.0647 (7) | |
H2 | 0.53200 | 0.19640 | 0.67050 | 0.0960* | |
H2N | 0.57290 | −0.47400 | 0.46610 | 0.0640* | |
H3 | 0.53370 | 0.38750 | 0.78640 | 0.1330* | |
H4 | 0.64240 | 0.58410 | 0.81640 | 0.1450* | |
H5 | 0.75350 | 0.59220 | 0.73900 | 0.1130* | |
H8 | 0.87900 | 0.51530 | 0.62240 | 0.1260* | |
H9 | 0.95070 | 0.39030 | 0.51840 | 0.1640* | |
H10 | 0.89350 | 0.16560 | 0.43560 | 0.1570* | |
H11 | 0.76210 | 0.06110 | 0.45070 | 0.1060* | |
H13A | 0.62230 | 0.01380 | 0.47860 | 0.0780* | |
H13B | 0.55450 | 0.05590 | 0.54060 | 0.0780* | |
H14A | 0.69250 | −0.17810 | 0.57610 | 0.0630* | |
H14B | 0.62810 | −0.13070 | 0.64120 | 0.0630* | |
H16 | 0.65840 | −0.54830 | 0.37290 | 0.0660* | |
H18 | 0.82840 | −0.25080 | 0.43000 | 0.0680* | |
H19 | 0.94440 | −0.20000 | 0.35810 | 0.0750* | |
H21 | 0.85520 | −0.53820 | 0.18000 | 0.0840* | |
H22 | 0.73950 | −0.59110 | 0.25280 | 0.0780* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0802 (4) | 0.0860 (4) | 0.1213 (6) | 0.0009 (3) | 0.0377 (4) | −0.0096 (4) |
O1 | 0.0627 (8) | 0.0490 (7) | 0.0762 (9) | −0.0175 (6) | 0.0092 (7) | −0.0065 (6) |
N1 | 0.0572 (9) | 0.0354 (7) | 0.0690 (10) | −0.0128 (6) | −0.0100 (7) | −0.0014 (7) |
N2 | 0.0576 (9) | 0.0383 (7) | 0.0638 (10) | −0.0184 (7) | 0.0009 (7) | −0.0023 (7) |
N3 | 0.0525 (8) | 0.0393 (7) | 0.0605 (9) | −0.0101 (6) | −0.0020 (7) | 0.0047 (7) |
C1 | 0.0650 (12) | 0.0325 (8) | 0.0620 (11) | −0.0028 (8) | −0.0089 (9) | 0.0074 (8) |
C2 | 0.0819 (16) | 0.0551 (12) | 0.1050 (19) | 0.0077 (11) | 0.0151 (14) | 0.0141 (13) |
C3 | 0.157 (3) | 0.0816 (19) | 0.101 (2) | 0.041 (2) | 0.055 (2) | 0.0206 (17) |
C4 | 0.221 (4) | 0.0656 (17) | 0.074 (2) | 0.013 (2) | 0.010 (2) | −0.0023 (15) |
C5 | 0.160 (3) | 0.0472 (12) | 0.0692 (16) | −0.0157 (15) | −0.0327 (17) | 0.0001 (11) |
C6 | 0.0858 (14) | 0.0358 (9) | 0.0567 (11) | −0.0128 (9) | −0.0216 (10) | 0.0100 (8) |
C7 | 0.0677 (12) | 0.0478 (10) | 0.0745 (14) | −0.0214 (9) | −0.0224 (11) | 0.0250 (10) |
C8 | 0.0827 (18) | 0.093 (2) | 0.133 (3) | −0.0414 (16) | −0.0290 (17) | 0.0530 (19) |
C9 | 0.0716 (19) | 0.149 (3) | 0.191 (4) | −0.016 (2) | 0.029 (2) | 0.094 (3) |
C10 | 0.115 (3) | 0.137 (3) | 0.147 (3) | 0.019 (2) | 0.055 (2) | 0.062 (3) |
C11 | 0.101 (2) | 0.0791 (16) | 0.0881 (18) | 0.0100 (15) | 0.0215 (15) | 0.0222 (14) |
C12 | 0.0640 (12) | 0.0444 (9) | 0.0637 (12) | −0.0037 (9) | −0.0031 (9) | 0.0148 (9) |
C13 | 0.0723 (13) | 0.0375 (9) | 0.0786 (13) | −0.0143 (9) | −0.0275 (10) | 0.0013 (9) |
C14 | 0.0569 (10) | 0.0389 (8) | 0.0584 (11) | −0.0108 (8) | −0.0099 (8) | −0.0005 (8) |
C15 | 0.0580 (11) | 0.0334 (8) | 0.0575 (11) | −0.0100 (8) | −0.0050 (8) | 0.0058 (8) |
C16 | 0.0560 (11) | 0.0377 (9) | 0.0682 (12) | −0.0101 (8) | −0.0073 (9) | −0.0006 (8) |
C17 | 0.0524 (10) | 0.0370 (8) | 0.0609 (11) | −0.0019 (7) | −0.0073 (8) | −0.0011 (8) |
C18 | 0.0584 (11) | 0.0493 (10) | 0.0611 (11) | −0.0056 (9) | −0.0033 (9) | −0.0079 (9) |
C19 | 0.0538 (11) | 0.0509 (10) | 0.0811 (14) | −0.0078 (9) | −0.0043 (10) | −0.0045 (10) |
C20 | 0.0579 (11) | 0.0515 (10) | 0.0783 (14) | 0.0090 (9) | 0.0054 (10) | −0.0043 (10) |
C21 | 0.0703 (13) | 0.0644 (13) | 0.0750 (14) | 0.0045 (11) | 0.0019 (11) | −0.0212 (11) |
C22 | 0.0606 (12) | 0.0534 (11) | 0.0781 (14) | −0.0052 (9) | −0.0060 (10) | −0.0178 (10) |
Cl1—C20 | 1.733 (2) | C16—C17 | 1.453 (3) |
O1—C15 | 1.229 (2) | C17—C22 | 1.384 (3) |
N1—C1 | 1.384 (2) | C17—C18 | 1.394 (2) |
N1—C12 | 1.373 (3) | C18—C19 | 1.374 (3) |
N1—C13 | 1.446 (2) | C19—C20 | 1.370 (3) |
N2—N3 | 1.373 (2) | C20—C21 | 1.374 (3) |
N2—C15 | 1.345 (2) | C21—C22 | 1.380 (3) |
N3—C16 | 1.274 (2) | C2—H2 | 0.9300 |
C1—C2 | 1.376 (3) | C3—H3 | 0.9300 |
C1—C6 | 1.408 (3) | C4—H4 | 0.9300 |
C2—C3 | 1.404 (4) | C5—H5 | 0.9300 |
N2—H2N | 0.8100 | C8—H8 | 0.9300 |
C3—C4 | 1.385 (5) | C9—H9 | 0.9300 |
C4—C5 | 1.336 (5) | C10—H10 | 0.9300 |
C5—C6 | 1.389 (3) | C11—H11 | 0.9300 |
C6—C7 | 1.427 (3) | C13—H13A | 0.9700 |
C7—C12 | 1.405 (3) | C13—H13B | 0.9700 |
C7—C8 | 1.406 (4) | C14—H14A | 0.9700 |
C8—C9 | 1.377 (5) | C14—H14B | 0.9700 |
C9—C10 | 1.377 (6) | C16—H16 | 0.9300 |
C10—C11 | 1.342 (6) | C18—H18 | 0.9300 |
C11—C12 | 1.380 (3) | C19—H19 | 0.9300 |
C13—C14 | 1.521 (2) | C21—H21 | 0.9300 |
C14—C15 | 1.504 (2) | C22—H22 | 0.9300 |
C1—N1—C12 | 109.24 (15) | C19—C20—C21 | 121.2 (2) |
C1—N1—C13 | 124.70 (16) | C20—C21—C22 | 118.7 (2) |
C12—N1—C13 | 125.17 (16) | C17—C22—C21 | 121.73 (19) |
N3—N2—C15 | 121.05 (14) | C1—C2—H2 | 122.00 |
N2—N3—C16 | 116.50 (14) | C3—C2—H2 | 122.00 |
N1—C1—C2 | 129.57 (18) | C2—C3—H3 | 119.00 |
N1—C1—C6 | 108.41 (16) | C4—C3—H3 | 119.00 |
C2—C1—C6 | 121.98 (18) | C3—C4—H4 | 119.00 |
C1—C2—C3 | 116.4 (2) | C5—C4—H4 | 119.00 |
N3—N2—H2N | 120.00 | C4—C5—H5 | 120.00 |
C15—N2—H2N | 119.00 | C6—C5—H5 | 120.00 |
C2—C3—C4 | 121.4 (3) | C7—C8—H8 | 121.00 |
C3—C4—C5 | 121.4 (3) | C9—C8—H8 | 121.00 |
C4—C5—C6 | 119.7 (3) | C8—C9—H9 | 119.00 |
C5—C6—C7 | 134.3 (2) | C10—C9—H9 | 119.00 |
C1—C6—C7 | 106.58 (16) | C9—C10—H10 | 119.00 |
C1—C6—C5 | 119.1 (2) | C11—C10—H10 | 119.00 |
C6—C7—C8 | 135.1 (2) | C10—C11—H11 | 121.00 |
C6—C7—C12 | 107.36 (18) | C12—C11—H11 | 121.00 |
C8—C7—C12 | 117.5 (2) | N1—C13—H13A | 109.00 |
C7—C8—C9 | 118.3 (3) | N1—C13—H13B | 109.00 |
C8—C9—C10 | 121.8 (3) | C14—C13—H13A | 109.00 |
C9—C10—C11 | 121.6 (4) | C14—C13—H13B | 109.00 |
C10—C11—C12 | 117.9 (3) | H13A—C13—H13B | 108.00 |
N1—C12—C7 | 108.37 (17) | C13—C14—H14A | 110.00 |
N1—C12—C11 | 128.76 (19) | C13—C14—H14B | 110.00 |
C7—C12—C11 | 122.9 (2) | C15—C14—H14A | 110.00 |
N1—C13—C14 | 112.84 (16) | C15—C14—H14B | 110.00 |
C13—C14—C15 | 110.00 (15) | H14A—C14—H14B | 108.00 |
N2—C15—C14 | 118.09 (16) | N3—C16—H16 | 120.00 |
O1—C15—C14 | 121.57 (16) | C17—C16—H16 | 120.00 |
O1—C15—N2 | 120.28 (16) | C17—C18—H18 | 120.00 |
N3—C16—C17 | 120.91 (15) | C19—C18—H18 | 120.00 |
C18—C17—C22 | 117.87 (17) | C18—C19—H19 | 120.00 |
C16—C17—C18 | 122.40 (16) | C20—C19—H19 | 120.00 |
C16—C17—C22 | 119.72 (16) | C20—C21—H21 | 121.00 |
C17—C18—C19 | 120.82 (18) | C22—C21—H21 | 121.00 |
C18—C19—C20 | 119.68 (19) | C17—C22—H22 | 119.00 |
Cl1—C20—C21 | 119.48 (17) | C21—C22—H22 | 119.00 |
Cl1—C20—C19 | 119.30 (16) | ||
C1—N1—C12—C7 | −2.1 (2) | C5—C6—C7—C8 | −0.5 (4) |
C12—N1—C1—C2 | −175.4 (2) | C6—C7—C12—N1 | 1.2 (2) |
C13—N1—C1—C2 | −5.7 (3) | C6—C7—C12—C11 | −178.4 (2) |
C12—N1—C1—C6 | 2.3 (2) | C6—C7—C8—C9 | 177.5 (3) |
C13—N1—C1—C6 | 171.93 (16) | C12—C7—C8—C9 | −0.2 (4) |
C12—N1—C13—C14 | 84.8 (2) | C8—C7—C12—N1 | 179.5 (2) |
C1—N1—C13—C14 | −83.2 (2) | C8—C7—C12—C11 | −0.1 (3) |
C13—N1—C12—C7 | −171.72 (17) | C7—C8—C9—C10 | −0.1 (6) |
C1—N1—C12—C11 | 177.4 (2) | C8—C9—C10—C11 | 0.8 (7) |
C13—N1—C12—C11 | 7.8 (3) | C9—C10—C11—C12 | −1.1 (6) |
C15—N2—N3—C16 | 178.89 (16) | C10—C11—C12—C7 | 0.7 (4) |
N3—N2—C15—C14 | −0.5 (2) | C10—C11—C12—N1 | −178.7 (3) |
N3—N2—C15—O1 | 176.58 (16) | N1—C13—C14—C15 | 177.03 (16) |
N2—N3—C16—C17 | 178.32 (15) | C13—C14—C15—O1 | −88.0 (2) |
N1—C1—C6—C5 | −179.18 (18) | C13—C14—C15—N2 | 89.05 (19) |
N1—C1—C6—C7 | −1.5 (2) | N3—C16—C17—C18 | 11.7 (3) |
C6—C1—C2—C3 | −0.1 (3) | N3—C16—C17—C22 | −167.34 (18) |
N1—C1—C2—C3 | 177.3 (2) | C16—C17—C18—C19 | −177.55 (17) |
C2—C1—C6—C7 | 176.36 (19) | C22—C17—C18—C19 | 1.5 (3) |
C2—C1—C6—C5 | −1.3 (3) | C16—C17—C22—C21 | 177.23 (19) |
C1—C2—C3—C4 | 1.5 (4) | C18—C17—C22—C21 | −1.9 (3) |
C2—C3—C4—C5 | −1.5 (5) | C17—C18—C19—C20 | 0.0 (3) |
C3—C4—C5—C6 | 0.0 (5) | C18—C19—C20—Cl1 | 178.96 (16) |
C4—C5—C6—C7 | −175.5 (3) | C18—C19—C20—C21 | −1.3 (3) |
C4—C5—C6—C1 | 1.4 (4) | Cl1—C20—C21—C22 | −179.29 (17) |
C5—C6—C7—C12 | 177.4 (2) | C19—C20—C21—C22 | 1.0 (3) |
C1—C6—C7—C12 | 0.2 (2) | C20—C21—C22—C17 | 0.7 (3) |
C1—C6—C7—C8 | −177.6 (3) |
Cg2, Cg3 and Cg4 are the centroids of the two benzene rings (C1–C6 and C7–C12) of the carbazole ring system and the chlorophenyl ring (C17–C22), respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···O1i | 0.81 | 2.08 | 2.8952 (19) | 175 |
C14—H14A···N3 | 0.97 | 2.42 | 2.765 (2) | 100 |
C5—H5···Cg4ii | 0.93 | 2.81 | 3.696 (3) | 160 |
C21—H21···Cg3iii | 0.93 | 2.97 | 3.858 (3) | 160 |
C22—H22···Cg2iii | 0.93 | 2.79 | 3.699 (2) | 166 |
Symmetry codes: (i) −x+1, −y−1, −z+1; (ii) x, −y+1/2, z+1/2; (iii) x, −y−1/2, z−1/2. |
Cg2, Cg3 and Cg4 are the centroids of the two benzene rings (C1–C6 and C7–C12) of the carbazole ring system and the chlorophenyl ring (C17–C22), respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···O1i | 0.81 | 2.08 | 2.8952 (19) | 175 |
C5—H5···Cg4ii | 0.93 | 2.81 | 3.696 (3) | 160 |
C21—H21···Cg3iii | 0.93 | 2.97 | 3.858 (3) | 160 |
C22—H22···Cg2iii | 0.93 | 2.79 | 3.699 (2) | 166 |
Symmetry codes: (i) −x+1, −y−1, −z+1; (ii) x, −y+1/2, z+1/2; (iii) x, −y−1/2, z−1/2. |
Acknowledgements
JPJ acknowledges the NSF–MRI program (grant No. CHE-1039027) for funds to purchase the X-ray diffractometer.
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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.
Carbazole scaffold compunds are well known for their pharmacological activities. The syntheses of carbazole derivatives in connection with the search for newer physiologically activities have been recognized in many reports (Hewlins et al., 1984; Kansal & Potier 1986; Haider et al., 1998; Hirata et al., 1999). Carbazomycin A and carbazomycin B have been found to be useful antibacterial and antifungal agents (Chowdhury et al., 1978; Sakano et al., 1980). In addition pyridocarbazoles show marked anticancer and anti-HIV activities (Pindur, 1990; Knölker & Reddy, 2002; Martin & Prasad 2006; Saturnino et al., 2003). Based on such facts we report in this study the synthesis and crystal structure of the title compound.
As shown in Fig. 1, the carbazole ring system (N1/C1–C12) of the title compound is essentially planar (r.m.s deviation = 0.003 Å), and makes a dihedral angle of 9.01 (8)° with the plane of the chlorophenyl ring (C17–C22). The bond lengths and angles are within normal ranges and are similar to those reported earlier for similar compounds.
In the crystal, two molecules are associated through a pair of N—H···O intermolecular hydrogen bonds, forming a centrosymmetric dimer with R22(8) ring motifs (Table 1), into layers parallel to (010) (Fig. 2). The dimers are connected by C—H···π interactions, forming a three-dimensional network.