organic compounds
8,9-Dimethoxy-5-phenylsulfonyl-5H-benzo[b]carbazole
aCentre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India, and bDepartment of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
*Correspondence e-mail: mnpsy2004@yahoo.com
In the title compound, C24H19NO4S, the benzocarbazole ring system is planar (r.m.s. deviation = 0.016 Å) and forms a dihedral angle of 78.54 (4)° with the sulfonyl-bound phenyl ring. Intramolecular C—H⋯O interactions are observed. A C(8) chain running along the b axis is formed via intermolecular C—H⋯O hydrogen bonds. The chains are linked via weak C—H⋯ π interactions.
Related literature
For bond-length data, see: Allen et al. (1987). For the biological activity of carbazole derivatives, see: Itoigawa et al. (2000); Tachibana et al. (2001); Ramsewak et al. (1999). For related structures, see: Chakkaravarthi et al. (2008); Govindasamy et al. (1998).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S160053681001247X/ci5059sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053681001247X/ci5059Isup2.hkl
To a solution of diethyl-2-[(2-bromomethyl-1-phenylsulfonyl-1H-indol-3-yl)methylene]malonate (0.41 g, 0.78 mmol) in dry 1,2-dichloroethane (15 ml), anhydrous ZnBr2 (0.35 g, 1.55 mmol) and veratrole (0.12 ml, 0.94 mmol) were added. The mixture was refluxed for 5 h under N2 atmosphere. The solvent was removed and the reaction mixture was quenched with ice-water (50 ml) containing 1 ml of conc. HCl, extracted with chloroform (2 × 10 ml) and dried (Na2SO4). Removal of the solvent followed by flash column chromatographic purification (n-hexane-ethyl acetate 99:1) led to the isolation of the title compound as a colourless solid. The compound was recrystallized from CDCl3.
H atoms were positioned geometrically (C–H = 0.93–0.96 Å) and allowed to ride on their parent atoms, with Uiso(H) = 1.5Ueq(Cmethyl) and 1.2Ueq(C). A rotating group model was used for the methyl groups.
Carbazole and its derivatives are considered as potential compounds owing to their applications in pharmacy and molecular electronics. They also possess various biological activities such as antitumor (Itoigawa et al., 2000), antioxidative (Tachibana et al., 2001), anti-inflammatory and antimutagenic (Ramsewak et al., 1999) properties.
The benzocarbazole ring system is planar (r.m.s. deviation 0.016 Å) and it forms a dihedral angle of 78.54 (4)° with the sulfonyl-bound phenyl ring (Fig.1). The N—C bond lengths, namely N5—C19 and N5—C21 [1.432 (1) & 1.436 (2) Å] deviate slightly from the mean value reported in the literature (1.370 (12) Å; Allen et al., 1987). This may be due to the electron-withdrawing character of the phenylsulfonyl group (Govindasamy et al., 1998) substitued at N atom of the carbazole group. The S atom exhibits a distorted tetrahedral geometry. The widening of the O1—S1—O2 [119.60 (6)°] angle may be due to repulsive interactions between the two S═O bonds (Chakkaravarthi et al., 2008). The sum of the bond angles around N1 [350.6°] indicate the sp2 The methoxy groups substituted at C8 and C9 lie almost in the plane of the attached benzene ring [C7—C8—O3—C24 = -3.8 (2)° and C10—C9—O4—C25 = 6.8 (2)°].
The intermolecular C—H···O hydrogen bonds link the molecules into a C(8) chain running along the b axis (Fig.2). The packing of the molecules is further influenced by C—H··· π interactions.
For bond-length data, see: Allen et al. (1987). For the biological activity of carbazole derivatives, see: Itoigawa et al. (2000); Tachibana et al. (2001); Ramsewak et al. (1999). For related structures, see: Chakkaravarthi et al. (2008); Govindasamy et al. (1998).
Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. The molecular structure of the title compound. Displacement ellipsoids are drawn at the 30% probability level. H atoms have been omitted for clarity. | |
Fig. 2. Crystal packing of the title compound. H atoms not involved in hydrogen bonding (dashed lines) have been omitted for clarity. |
C24H19NO4S | Z = 2 |
Mr = 417.46 | F(000) = 436 |
Triclinic, P1 | Dx = 1.409 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.8606 (2) Å | Cell parameters from 7025 reflections |
b = 9.5892 (2) Å | θ = 1.5–33.3° |
c = 13.8846 (4) Å | µ = 0.20 mm−1 |
α = 100.387 (1)° | T = 293 K |
β = 93.168 (2)° | Block, colourless |
γ = 105.883 (1)° | 0.30 × 0.25 × 0.20 mm |
V = 984.05 (4) Å3 |
Bruker Kappa APEXII area-detector diffractometer | 7025 independent reflections |
Radiation source: fine-focus sealed tube | 5372 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
ω and φ scans | θmax = 33.3°, θmin = 1.5° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2001) | h = −12→11 |
Tmin = 0.943, Tmax = 0.962 | k = −14→13 |
26246 measured reflections | l = −21→21 |
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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.138 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0749P)2 + 0.1333P] where P = (Fo2 + 2Fc2)/3 |
7025 reflections | (Δ/σ)max = 0.001 |
273 parameters | Δρmax = 0.39 e Å−3 |
0 restraints | Δρmin = −0.25 e Å−3 |
C24H19NO4S | γ = 105.883 (1)° |
Mr = 417.46 | V = 984.05 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.8606 (2) Å | Mo Kα radiation |
b = 9.5892 (2) Å | µ = 0.20 mm−1 |
c = 13.8846 (4) Å | T = 293 K |
α = 100.387 (1)° | 0.30 × 0.25 × 0.20 mm |
β = 93.168 (2)° |
Bruker Kappa APEXII area-detector diffractometer | 7025 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2001) | 5372 reflections with I > 2σ(I) |
Tmin = 0.943, Tmax = 0.962 | Rint = 0.024 |
26246 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.138 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.39 e Å−3 |
7025 reflections | Δρmin = −0.25 e Å−3 |
273 parameters |
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. |
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 | ||
S1 | 0.62768 (4) | 0.24308 (3) | 0.35159 (2) | 0.03860 (9) | |
O1 | 0.54424 (14) | 0.18104 (12) | 0.42890 (8) | 0.0543 (3) | |
O2 | 0.57390 (13) | 0.35798 (11) | 0.31820 (7) | 0.0483 (2) | |
O3 | 0.84578 (17) | 0.47850 (12) | −0.16011 (8) | 0.0580 (3) | |
O4 | 0.89925 (15) | 0.24214 (13) | −0.25315 (7) | 0.0566 (3) | |
C1 | 0.6666 (2) | −0.24922 (15) | 0.16579 (12) | 0.0538 (3) | |
H1 | 0.7018 | −0.2941 | 0.1083 | 0.065* | |
C2 | 0.6256 (2) | −0.32426 (16) | 0.24138 (14) | 0.0600 (4) | |
H2 | 0.6350 | −0.4200 | 0.2351 | 0.072* | |
C3 | 0.5710 (2) | −0.25904 (16) | 0.32592 (13) | 0.0543 (4) | |
H3 | 0.5440 | −0.3121 | 0.3757 | 0.065* | |
C4 | 0.55495 (18) | −0.11624 (15) | 0.33915 (11) | 0.0484 (3) | |
H4 | 0.5166 | −0.0732 | 0.3962 | 0.058* | |
N5 | 0.59104 (14) | 0.10465 (11) | 0.25487 (8) | 0.0387 (2) | |
C6 | 0.67353 (17) | 0.25195 (13) | 0.12110 (9) | 0.0386 (2) | |
H6 | 0.6486 | 0.3362 | 0.1542 | 0.046* | |
C7 | 0.76027 (18) | 0.37119 (14) | −0.01873 (9) | 0.0421 (3) | |
H7 | 0.7390 | 0.4572 | 0.0142 | 0.051* | |
C8 | 0.81631 (18) | 0.36643 (15) | −0.11016 (9) | 0.0430 (3) | |
C9 | 0.84830 (17) | 0.23465 (15) | −0.16184 (9) | 0.0432 (3) | |
C10 | 0.82608 (18) | 0.11485 (15) | −0.11883 (9) | 0.0442 (3) | |
H10 | 0.8490 | 0.0300 | −0.1525 | 0.053* | |
C11 | 0.74574 (18) | −0.00587 (13) | 0.02134 (10) | 0.0424 (3) | |
H11 | 0.7687 | −0.0913 | −0.0112 | 0.051* | |
C12 | 0.85883 (16) | 0.30130 (14) | 0.38223 (8) | 0.0386 (2) | |
C13 | 0.9589 (2) | 0.42875 (18) | 0.35613 (11) | 0.0530 (3) | |
H13 | 0.9045 | 0.4838 | 0.3228 | 0.064* | |
C14 | 1.1410 (2) | 0.4730 (2) | 0.38032 (12) | 0.0677 (5) | |
H14 | 1.2102 | 0.5592 | 0.3641 | 0.081* | |
C15 | 1.2202 (2) | 0.3895 (2) | 0.42836 (13) | 0.0687 (5) | |
H15 | 1.3429 | 0.4197 | 0.4445 | 0.082* | |
C16 | 1.1192 (3) | 0.2617 (2) | 0.45275 (15) | 0.0726 (5) | |
H16 | 1.1743 | 0.2055 | 0.4845 | 0.087* | |
C17 | 0.9365 (2) | 0.21628 (18) | 0.43036 (12) | 0.0575 (4) | |
H17 | 0.8674 | 0.1306 | 0.4473 | 0.069* | |
C18 | 0.68934 (16) | 0.00057 (12) | 0.11331 (9) | 0.0379 (2) | |
C19 | 0.65257 (15) | 0.12981 (12) | 0.16256 (8) | 0.0348 (2) | |
C20 | 0.65429 (16) | −0.10571 (13) | 0.17721 (10) | 0.0406 (2) | |
C21 | 0.59885 (15) | −0.04054 (13) | 0.26328 (10) | 0.0396 (2) | |
C22 | 0.76869 (16) | 0.11715 (13) | −0.02368 (9) | 0.0382 (2) | |
C23 | 0.73374 (16) | 0.24697 (12) | 0.02715 (8) | 0.0368 (2) | |
C24 | 0.8057 (3) | 0.60947 (18) | −0.11663 (13) | 0.0630 (4) | |
H24A | 0.6826 | 0.5860 | −0.1055 | 0.094* | |
H24B | 0.8287 | 0.6784 | −0.1600 | 0.094* | |
H24C | 0.8788 | 0.6528 | −0.0550 | 0.094* | |
C25 | 0.9127 (2) | 0.1091 (2) | −0.31191 (12) | 0.0639 (4) | |
H25A | 1.0028 | 0.0769 | −0.2805 | 0.096* | |
H25B | 0.9438 | 0.1264 | −0.3755 | 0.096* | |
H25C | 0.8005 | 0.0341 | −0.3195 | 0.096* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.04190 (16) | 0.04201 (16) | 0.03897 (15) | 0.01777 (12) | 0.01525 (11) | 0.01425 (11) |
O1 | 0.0600 (6) | 0.0618 (6) | 0.0504 (5) | 0.0199 (5) | 0.0287 (5) | 0.0245 (5) |
O2 | 0.0553 (5) | 0.0502 (5) | 0.0523 (5) | 0.0299 (4) | 0.0170 (4) | 0.0168 (4) |
O3 | 0.0840 (8) | 0.0512 (6) | 0.0463 (5) | 0.0219 (5) | 0.0177 (5) | 0.0221 (4) |
O4 | 0.0694 (7) | 0.0673 (7) | 0.0392 (5) | 0.0250 (5) | 0.0174 (5) | 0.0151 (4) |
C1 | 0.0658 (9) | 0.0351 (6) | 0.0620 (9) | 0.0165 (6) | 0.0024 (7) | 0.0124 (6) |
C2 | 0.0685 (9) | 0.0359 (6) | 0.0768 (11) | 0.0123 (6) | −0.0037 (8) | 0.0224 (7) |
C3 | 0.0503 (7) | 0.0453 (7) | 0.0676 (9) | 0.0041 (6) | −0.0019 (6) | 0.0296 (7) |
C4 | 0.0456 (6) | 0.0460 (7) | 0.0551 (7) | 0.0068 (5) | 0.0065 (6) | 0.0241 (6) |
N5 | 0.0430 (5) | 0.0359 (5) | 0.0405 (5) | 0.0118 (4) | 0.0081 (4) | 0.0140 (4) |
C6 | 0.0494 (6) | 0.0326 (5) | 0.0367 (5) | 0.0152 (4) | 0.0084 (5) | 0.0084 (4) |
C7 | 0.0546 (7) | 0.0358 (5) | 0.0382 (6) | 0.0146 (5) | 0.0078 (5) | 0.0103 (4) |
C8 | 0.0482 (6) | 0.0444 (6) | 0.0377 (6) | 0.0121 (5) | 0.0051 (5) | 0.0134 (5) |
C9 | 0.0442 (6) | 0.0520 (7) | 0.0340 (5) | 0.0147 (5) | 0.0057 (5) | 0.0088 (5) |
C10 | 0.0513 (7) | 0.0448 (6) | 0.0381 (6) | 0.0186 (5) | 0.0072 (5) | 0.0044 (5) |
C11 | 0.0524 (7) | 0.0340 (5) | 0.0428 (6) | 0.0173 (5) | 0.0050 (5) | 0.0054 (4) |
C12 | 0.0426 (6) | 0.0437 (6) | 0.0313 (5) | 0.0159 (5) | 0.0085 (4) | 0.0052 (4) |
C13 | 0.0522 (7) | 0.0612 (8) | 0.0453 (7) | 0.0092 (6) | 0.0095 (6) | 0.0198 (6) |
C14 | 0.0506 (8) | 0.0878 (12) | 0.0531 (8) | −0.0009 (8) | 0.0129 (7) | 0.0152 (8) |
C15 | 0.0437 (7) | 0.0943 (13) | 0.0579 (9) | 0.0186 (8) | 0.0040 (7) | −0.0083 (9) |
C16 | 0.0676 (10) | 0.0737 (11) | 0.0762 (12) | 0.0361 (9) | −0.0170 (9) | −0.0025 (9) |
C17 | 0.0611 (8) | 0.0498 (8) | 0.0610 (9) | 0.0184 (6) | −0.0082 (7) | 0.0106 (6) |
C18 | 0.0411 (6) | 0.0313 (5) | 0.0414 (6) | 0.0105 (4) | 0.0015 (4) | 0.0084 (4) |
C19 | 0.0370 (5) | 0.0329 (5) | 0.0356 (5) | 0.0105 (4) | 0.0036 (4) | 0.0089 (4) |
C20 | 0.0416 (6) | 0.0327 (5) | 0.0477 (6) | 0.0089 (4) | −0.0004 (5) | 0.0127 (5) |
C21 | 0.0359 (5) | 0.0349 (5) | 0.0482 (6) | 0.0065 (4) | 0.0014 (5) | 0.0157 (5) |
C22 | 0.0417 (6) | 0.0369 (5) | 0.0362 (5) | 0.0129 (4) | 0.0036 (4) | 0.0060 (4) |
C23 | 0.0425 (6) | 0.0337 (5) | 0.0344 (5) | 0.0112 (4) | 0.0042 (4) | 0.0074 (4) |
C24 | 0.0872 (12) | 0.0493 (8) | 0.0610 (9) | 0.0243 (8) | 0.0164 (8) | 0.0236 (7) |
C25 | 0.0695 (10) | 0.0806 (11) | 0.0418 (7) | 0.0277 (8) | 0.0139 (7) | 0.0017 (7) |
S1—O2 | 1.4231 (10) | C9—C10 | 1.3623 (19) |
S1—O2 | 1.4231 (10) | C10—C22 | 1.4177 (17) |
S1—O1 | 1.4251 (9) | C10—H10 | 0.93 |
S1—O1 | 1.4251 (9) | C11—C18 | 1.3712 (17) |
S1—N5 | 1.6594 (11) | C11—C22 | 1.4060 (17) |
S1—C12 | 1.7515 (13) | C11—H11 | 0.93 |
O3—C8 | 1.3564 (15) | C12—C17 | 1.3811 (19) |
O3—C24 | 1.416 (2) | C12—C13 | 1.3816 (19) |
O4—C9 | 1.3587 (15) | C13—C14 | 1.380 (2) |
O4—C25 | 1.4183 (19) | C13—H13 | 0.93 |
C1—C2 | 1.381 (2) | C14—C15 | 1.376 (3) |
C1—C20 | 1.3872 (18) | C14—H14 | 0.93 |
C1—H1 | 0.93 | C15—C16 | 1.376 (3) |
C2—C3 | 1.375 (3) | C15—H15 | 0.93 |
C2—H2 | 0.93 | C16—C17 | 1.381 (2) |
C3—C4 | 1.390 (2) | C16—H16 | 0.93 |
C3—H3 | 0.93 | C17—H17 | 0.93 |
C4—C21 | 1.3909 (17) | C18—C19 | 1.4139 (16) |
C4—H4 | 0.93 | C18—C20 | 1.4494 (16) |
N5—C19 | 1.4321 (14) | C20—C21 | 1.3950 (19) |
N5—C21 | 1.4355 (15) | C22—C23 | 1.4196 (17) |
C6—C19 | 1.3705 (15) | C24—H24A | 0.96 |
C6—C23 | 1.4093 (16) | C24—H24B | 0.96 |
C6—H6 | 0.93 | C24—H24C | 0.96 |
C7—C8 | 1.3637 (17) | C25—H25A | 0.96 |
C7—C23 | 1.4215 (16) | C25—H25B | 0.96 |
C7—H7 | 0.93 | C25—H25C | 0.96 |
C8—C9 | 1.4289 (19) | ||
O2—S1—O1 | 119.60 (6) | C14—C13—C12 | 118.85 (16) |
O2—S1—N5 | 106.42 (6) | C14—C13—H13 | 120.6 |
O1—S1—N5 | 106.38 (6) | C12—C13—H13 | 120.6 |
O2—S1—C12 | 109.08 (6) | C15—C14—C13 | 120.03 (17) |
O2—S1—C12 | 109.08 (6) | C15—C14—H14 | 120.0 |
O1—S1—C12 | 109.33 (6) | C13—C14—H14 | 120.0 |
O1—S1—C12 | 109.33 (6) | C14—C15—C16 | 120.53 (15) |
N5—S1—C12 | 105.02 (5) | C14—C15—H15 | 119.7 |
C8—O3—C24 | 117.66 (12) | C16—C15—H15 | 119.7 |
C9—O4—C25 | 116.75 (12) | C15—C16—C17 | 120.44 (17) |
C2—C1—C20 | 118.78 (15) | C15—C16—H16 | 119.8 |
C2—C1—H1 | 120.6 | C17—C16—H16 | 119.8 |
C20—C1—H1 | 120.6 | C12—C17—C16 | 118.38 (16) |
C3—C2—C1 | 120.75 (14) | C12—C17—H17 | 120.8 |
C3—C2—H2 | 119.6 | C16—C17—H17 | 120.8 |
C1—C2—H2 | 119.6 | C11—C18—C19 | 120.27 (11) |
C2—C3—C4 | 121.93 (14) | C11—C18—C20 | 132.36 (11) |
C2—C3—H3 | 119.0 | C19—C18—C20 | 107.37 (11) |
C4—C3—H3 | 119.0 | C6—C19—C18 | 121.62 (11) |
C3—C4—C21 | 117.01 (15) | C6—C19—N5 | 129.82 (10) |
C3—C4—H4 | 121.5 | C18—C19—N5 | 108.55 (9) |
C21—C4—H4 | 121.5 | C1—C20—C21 | 120.01 (12) |
C19—N5—C21 | 107.00 (9) | C1—C20—C18 | 131.88 (13) |
C19—N5—S1 | 120.99 (8) | C21—C20—C18 | 108.10 (11) |
C21—N5—S1 | 122.60 (8) | C4—C21—C20 | 121.51 (12) |
C19—C6—C23 | 118.47 (11) | C4—C21—N5 | 129.56 (13) |
C19—C6—H6 | 120.8 | C20—C21—N5 | 108.88 (10) |
C23—C6—H6 | 120.8 | C11—C22—C10 | 121.58 (11) |
C8—C7—C23 | 121.15 (12) | C11—C22—C23 | 119.36 (11) |
C8—C7—H7 | 119.4 | C10—C22—C23 | 119.06 (11) |
C23—C7—H7 | 119.4 | C6—C23—C22 | 120.47 (11) |
O3—C8—C7 | 125.72 (13) | C6—C23—C7 | 120.86 (11) |
O3—C8—C9 | 114.26 (11) | C22—C23—C7 | 118.67 (11) |
C7—C8—C9 | 120.02 (12) | O3—C24—H24A | 109.5 |
O4—C9—C10 | 125.54 (12) | O3—C24—H24B | 109.5 |
O4—C9—C8 | 114.56 (12) | H24A—C24—H24B | 109.5 |
C10—C9—C8 | 119.89 (12) | O3—C24—H24C | 109.5 |
C9—C10—C22 | 121.20 (12) | H24A—C24—H24C | 109.5 |
C9—C10—H10 | 119.4 | H24B—C24—H24C | 109.5 |
C22—C10—H10 | 119.4 | O4—C25—H25A | 109.5 |
C18—C11—C22 | 119.80 (11) | O4—C25—H25B | 109.5 |
C18—C11—H11 | 120.1 | H25A—C25—H25B | 109.5 |
C22—C11—H11 | 120.1 | O4—C25—H25C | 109.5 |
C17—C12—C13 | 121.76 (13) | H25A—C25—H25C | 109.5 |
C17—C12—S1 | 118.76 (11) | H25B—C25—H25C | 109.5 |
C13—C12—S1 | 119.47 (11) | ||
O2—S1—O1—O1 | 0.00 (16) | C13—C14—C15—C16 | 0.0 (3) |
O2—S1—O1—O1 | 0.00 (16) | C14—C15—C16—C17 | −0.8 (3) |
N5—S1—O1—O1 | 0.00 (14) | C13—C12—C17—C16 | 0.2 (2) |
C12—S1—O1—O1 | 0.00 (17) | S1—C12—C17—C16 | 178.91 (12) |
O1—S1—O2—O2 | 0.00 (14) | C15—C16—C17—C12 | 0.7 (3) |
O1—S1—O2—O2 | 0.00 (14) | C22—C11—C18—C19 | 0.61 (19) |
N5—S1—O2—O2 | 0.00 (15) | C22—C11—C18—C20 | −179.99 (12) |
C12—S1—O2—O2 | 0.00 (16) | C23—C6—C19—C18 | −0.16 (18) |
C20—C1—C2—C3 | 0.9 (2) | C23—C6—C19—N5 | −178.68 (11) |
C1—C2—C3—C4 | −0.1 (2) | C11—C18—C19—C6 | −0.69 (18) |
C2—C3—C4—C21 | −0.8 (2) | C20—C18—C19—C6 | 179.78 (11) |
O2—S1—N5—C19 | 49.36 (10) | C11—C18—C19—N5 | 178.11 (11) |
O2—S1—N5—C19 | 49.36 (10) | C20—C18—C19—N5 | −1.42 (13) |
O1—S1—N5—C19 | 177.92 (9) | C21—N5—C19—C6 | −178.66 (12) |
O1—S1—N5—C19 | 177.92 (9) | S1—N5—C19—C6 | −31.42 (17) |
C12—S1—N5—C19 | −66.23 (10) | C21—N5—C19—C18 | 2.67 (12) |
O2—S1—N5—C21 | −168.55 (9) | S1—N5—C19—C18 | 149.90 (9) |
O2—S1—N5—C21 | −168.55 (9) | C2—C1—C20—C21 | −0.9 (2) |
O1—S1—N5—C21 | −39.99 (11) | C2—C1—C20—C18 | 179.24 (14) |
O1—S1—N5—C21 | −39.99 (11) | C11—C18—C20—C1 | 0.0 (2) |
C12—S1—N5—C21 | 75.86 (10) | C19—C18—C20—C1 | 179.45 (14) |
C24—O3—C8—C7 | −3.8 (2) | C11—C18—C20—C21 | −179.87 (13) |
C24—O3—C8—C9 | 175.91 (13) | C19—C18—C20—C21 | −0.41 (13) |
C23—C7—C8—O3 | −179.89 (12) | C3—C4—C21—C20 | 0.81 (19) |
C23—C7—C8—C9 | 0.4 (2) | C3—C4—C21—N5 | 178.13 (12) |
C25—O4—C9—C10 | 6.8 (2) | C1—C20—C21—C4 | 0.02 (19) |
C25—O4—C9—C8 | −172.91 (13) | C18—C20—C21—C4 | 179.91 (11) |
O3—C8—C9—O4 | −1.32 (17) | C1—C20—C21—N5 | −177.80 (12) |
C7—C8—C9—O4 | 178.41 (12) | C18—C20—C21—N5 | 2.09 (13) |
O3—C8—C9—C10 | 179.00 (12) | C19—N5—C21—C4 | 179.47 (12) |
C7—C8—C9—C10 | −1.3 (2) | S1—N5—C21—C4 | 32.88 (17) |
O4—C9—C10—C22 | −178.64 (12) | C19—N5—C21—C20 | −2.94 (13) |
C8—C9—C10—C22 | 1.0 (2) | S1—N5—C21—C20 | −149.53 (9) |
O2—S1—C12—C17 | 170.30 (11) | C18—C11—C22—C10 | −179.74 (11) |
O2—S1—C12—C17 | 170.30 (11) | C18—C11—C22—C23 | 0.28 (19) |
O1—S1—C12—C17 | 37.83 (12) | C9—C10—C22—C11 | −179.87 (12) |
O1—S1—C12—C17 | 37.83 (12) | C9—C10—C22—C23 | 0.11 (19) |
N5—S1—C12—C17 | −75.97 (12) | C19—C6—C23—C22 | 1.07 (18) |
O2—S1—C12—C13 | −10.97 (13) | C19—C6—C23—C7 | −179.10 (12) |
O2—S1—C12—C13 | −10.97 (13) | C11—C22—C23—C6 | −1.14 (18) |
O1—S1—C12—C13 | −143.44 (11) | C10—C22—C23—C6 | 178.88 (11) |
O1—S1—C12—C13 | −143.44 (11) | C11—C22—C23—C7 | 179.02 (12) |
N5—S1—C12—C13 | 102.76 (11) | C10—C22—C23—C7 | −0.95 (18) |
C17—C12—C13—C14 | −1.0 (2) | C8—C7—C23—C6 | −179.15 (12) |
S1—C12—C13—C14 | −179.69 (12) | C8—C7—C23—C22 | 0.7 (2) |
C12—C13—C14—C15 | 0.9 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4···O1 | 0.93 | 2.34 | 2.9238 (19) | 120 |
C6—H6···O2 | 0.93 | 2.37 | 2.9674 (15) | 122 |
C2—H2···O2i | 0.93 | 2.55 | 3.3361 (17) | 143 |
C24—H24C···Cg1ii | 0.96 | 2.84 | 3.727 (2) | 154 |
C25—H25A···Cg2iii | 0.96 | 2.90 | 3.628 (2) | 134 |
Symmetry codes: (i) x, y−1, z; (ii) −x+2, −y+1, −z; (iii) −x+2, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C24H19NO4S |
Mr | 417.46 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 7.8606 (2), 9.5892 (2), 13.8846 (4) |
α, β, γ (°) | 100.387 (1), 93.168 (2), 105.883 (1) |
V (Å3) | 984.05 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.20 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Bruker Kappa APEXII area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2001) |
Tmin, Tmax | 0.943, 0.962 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 26246, 7025, 5372 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.773 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.138, 1.04 |
No. of reflections | 7025 |
No. of parameters | 273 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.39, −0.25 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4···O1 | 0.93 | 2.34 | 2.9238 (19) | 120 |
C6—H6···O2 | 0.93 | 2.37 | 2.9674 (15) | 122 |
C2—H2···O2i | 0.93 | 2.55 | 3.3361 (17) | 143 |
C24—H24C···Cg1ii | 0.96 | 2.84 | 3.7272 (21) | 154 |
C25—H25A···Cg2iii | 0.96 | 2.90 | 3.6276 (21) | 134 |
Symmetry codes: (i) x, y−1, z; (ii) −x+2, −y+1, −z; (iii) −x+2, −y, −z. |
Acknowledgements
TK thanks the CSIR, India, for financial support in the form of a senior research fellowship.
References
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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 and its derivatives are considered as potential compounds owing to their applications in pharmacy and molecular electronics. They also possess various biological activities such as antitumor (Itoigawa et al., 2000), antioxidative (Tachibana et al., 2001), anti-inflammatory and antimutagenic (Ramsewak et al., 1999) properties.
The benzocarbazole ring system is planar (r.m.s. deviation 0.016 Å) and it forms a dihedral angle of 78.54 (4)° with the sulfonyl-bound phenyl ring (Fig.1). The N—C bond lengths, namely N5—C19 and N5—C21 [1.432 (1) & 1.436 (2) Å] deviate slightly from the mean value reported in the literature (1.370 (12) Å; Allen et al., 1987). This may be due to the electron-withdrawing character of the phenylsulfonyl group (Govindasamy et al., 1998) substitued at N atom of the carbazole group. The S atom exhibits a distorted tetrahedral geometry. The widening of the O1—S1—O2 [119.60 (6)°] angle may be due to repulsive interactions between the two S═O bonds (Chakkaravarthi et al., 2008). The sum of the bond angles around N1 [350.6°] indicate the sp2 hybridization. The methoxy groups substituted at C8 and C9 lie almost in the plane of the attached benzene ring [C7—C8—O3—C24 = -3.8 (2)° and C10—C9—O4—C25 = 6.8 (2)°].
The intermolecular C—H···O hydrogen bonds link the molecules into a C(8) chain running along the b axis (Fig.2). The packing of the molecules is further influenced by C—H··· π interactions.