organic compounds
9-Methoxy-5-phenylsulfonyl-5H-benzo[b]carbazole
aDepartment of Physics, CPCL Polytechnic College, Chennai 600 068, India, bDepartment of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India, and cDepartment of Physics, Presidency College, Chennai 600 005, India
*Correspondence e-mail: chakkaravarthi_2005@yahoo.com
In the title compound, C23H17NO3S, the mean plane of the benzo[b]carbazole ring system makes a dihedral angle of 77.17 (4)° with the phenyl ring. The S atom is in a distorted tetrahedral configuration. There are three intramolecular C—H⋯O interactions forming five- and six-membered rings with graph-set motifs S(5) and S(6), respectively.
Related literature
For related literature, see: Allen et al. (1987); Chakkaravarthi et al. (2007, 2008); Diaz et al. (2002); Etter et al. (1990); Govindasamy et al. (1998); Hökelek et al. (1998); Hosomi et al. (2000); Itoigawa et al. (2000); Ramsewak et al. (1999); Rodriguez et al. (1995); Sankaranarayanan et al. (2000); Tachibana et al. (2001); Zhang et al. (2004).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell APEX2; data reduction: APEX2; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808024756/bt2761sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808024756/bt2761Isup2.hkl
To a solution of diethyl 2-((2-(bromomethyl)-1-(phenylsulfonyl)-1H-indol-3-yl)methylene) malonate (0.57 mmol) in dry 1,2-DCE (10 ml), ZnBr2 (1.15 mmol) and anisole (1.15 mmol) were added. The reaction mixture was then refluxed for 1 h under N2 atmosphere. It was then poured over ice-water (30 ml) containing 1 ml of concentrated HCl, extracted with Chloroform (2 X 10 ml) and dried (Na2SO4). The solvent was removed under vacuo, then crude products was purified by flash
(silica gel, 230–420 mesh, n-hexane/ethyl acetate 98:2) afforded the title compound suitable for X-ray analysis.H atoms were positioned geometrically and refined using a riding model with C—H = 0.93 Å and Uiso(H) = 1.2Ueq(C) for aromatic H atoms and C—H = 0.96 Å and Uiso(H) = 1.5Ueq(C) for methyl H atoms.
Data collection: APEX2 (Bruker, 2004); cell
APEX2 (Bruker, 2004); data reduction: APEX2 (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C23H17NO3S | Z = 2 |
Mr = 387.44 | F(000) = 404 |
Triclinic, P1 | Dx = 1.399 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.3608 (3) Å | Cell parameters from 6534 reflections |
b = 9.3103 (3) Å | θ = 2.4–30.7° |
c = 12.1754 (4) Å | µ = 0.20 mm−1 |
α = 76.061 (2)° | T = 295 K |
β = 88.680 (1)° | Block, colourless |
γ = 88.715 (2)° | 0.30 × 0.20 × 0.16 mm |
V = 919.46 (5) Å3 |
Bruker Kappa APEX2 diffractometer | 5739 independent reflections |
Radiation source: fine-focus sealed tube | 4330 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
ω and ϕ scans | θmax = 30.9°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→12 |
Tmin = 0.909, Tmax = 0.969 | k = −12→13 |
23200 measured reflections | l = −17→17 |
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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.134 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0653P)2 + 0.1785P] where P = (Fo2 + 2Fc2)/3 |
5739 reflections | (Δ/σ)max < 0.001 |
254 parameters | Δρmax = 0.29 e Å−3 |
0 restraints | Δρmin = −0.35 e Å−3 |
C23H17NO3S | γ = 88.715 (2)° |
Mr = 387.44 | V = 919.46 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.3608 (3) Å | Mo Kα radiation |
b = 9.3103 (3) Å | µ = 0.20 mm−1 |
c = 12.1754 (4) Å | T = 295 K |
α = 76.061 (2)° | 0.30 × 0.20 × 0.16 mm |
β = 88.680 (1)° |
Bruker Kappa APEX2 diffractometer | 5739 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4330 reflections with I > 2σ(I) |
Tmin = 0.909, Tmax = 0.969 | Rint = 0.022 |
23200 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.134 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.29 e Å−3 |
5739 reflections | Δρmin = −0.35 e Å−3 |
254 parameters |
x | y | z | Uiso*/Ueq | ||
S1 | 0.46793 (4) | 0.47800 (4) | 0.77672 (3) | 0.04613 (11) | |
O1 | 0.54144 (15) | 0.52427 (14) | 0.66788 (10) | 0.0629 (3) | |
O2 | 0.55193 (14) | 0.49026 (13) | 0.87398 (10) | 0.0595 (3) | |
O3 | 0.19450 (16) | −0.22782 (14) | 1.37354 (9) | 0.0650 (3) | |
N1 | 0.42588 (14) | 0.30123 (12) | 0.79458 (9) | 0.0434 (2) | |
C1 | 0.28152 (18) | 0.56690 (14) | 0.77467 (12) | 0.0473 (3) | |
C2 | 0.2064 (2) | 0.57404 (18) | 0.87596 (15) | 0.0616 (4) | |
H2 | 0.2572 | 0.5391 | 0.9447 | 0.074* | |
C3 | 0.0533 (3) | 0.6349 (2) | 0.8715 (2) | 0.0820 (6) | |
H3 | −0.0003 | 0.6411 | 0.9380 | 0.098* | |
C4 | −0.0204 (3) | 0.6865 (2) | 0.7683 (3) | 0.0895 (7) | |
H4 | −0.1243 | 0.7246 | 0.7663 | 0.107* | |
C5 | 0.0581 (3) | 0.6822 (2) | 0.6692 (2) | 0.0845 (7) | |
H5 | 0.0085 | 0.7199 | 0.6004 | 0.101* | |
C6 | 0.2093 (2) | 0.62243 (18) | 0.67116 (15) | 0.0635 (4) | |
H6 | 0.2631 | 0.6191 | 0.6041 | 0.076* | |
C7 | 0.35493 (16) | 0.24535 (15) | 0.70734 (11) | 0.0419 (3) | |
C8 | 0.37507 (19) | 0.29073 (17) | 0.59112 (12) | 0.0512 (3) | |
H8 | 0.4363 | 0.3725 | 0.5579 | 0.061* | |
C9 | 0.3005 (2) | 0.20949 (19) | 0.52609 (13) | 0.0578 (4) | |
H9 | 0.3115 | 0.2377 | 0.4477 | 0.069* | |
C10 | 0.2101 (2) | 0.0875 (2) | 0.57509 (13) | 0.0602 (4) | |
H10 | 0.1620 | 0.0347 | 0.5294 | 0.072* | |
C11 | 0.1905 (2) | 0.04329 (18) | 0.69090 (13) | 0.0540 (4) | |
H11 | 0.1295 | −0.0388 | 0.7237 | 0.065* | |
C12 | 0.26309 (16) | 0.12316 (15) | 0.75771 (11) | 0.0427 (3) | |
C13 | 0.27196 (15) | 0.10092 (14) | 0.87926 (11) | 0.0409 (3) | |
C14 | 0.20944 (17) | −0.00631 (16) | 0.96676 (12) | 0.0457 (3) | |
H14 | 0.1427 | −0.0777 | 0.9521 | 0.055* | |
C15 | 0.24777 (16) | −0.00676 (15) | 1.07919 (11) | 0.0428 (3) | |
C16 | 0.19098 (19) | −0.11947 (17) | 1.17162 (12) | 0.0504 (3) | |
H16 | 0.1228 | −0.1911 | 1.1589 | 0.060* | |
C17 | 0.23668 (18) | −0.12252 (17) | 1.27913 (12) | 0.0498 (3) | |
C18 | 0.33749 (19) | −0.01305 (17) | 1.29944 (12) | 0.0516 (3) | |
H18 | 0.3674 | −0.0160 | 1.3731 | 0.062* | |
C19 | 0.39146 (19) | 0.09670 (16) | 1.21281 (12) | 0.0486 (3) | |
H19 | 0.4572 | 0.1686 | 1.2280 | 0.058* | |
C20 | 0.34939 (16) | 0.10378 (14) | 1.09928 (11) | 0.0419 (3) | |
C21 | 0.41158 (17) | 0.21431 (15) | 1.00847 (12) | 0.0444 (3) | |
H21 | 0.4774 | 0.2874 | 1.0216 | 0.053* | |
C22 | 0.37207 (15) | 0.21053 (14) | 0.90096 (11) | 0.0398 (3) | |
C23 | 0.1076 (2) | −0.3496 (2) | 1.35768 (15) | 0.0671 (5) | |
H23A | 0.0031 | −0.3164 | 1.3303 | 0.101* | |
H23B | 0.0974 | −0.4218 | 1.4284 | 0.101* | |
H23C | 0.1632 | −0.3932 | 1.3036 | 0.101* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0454 (2) | 0.04688 (19) | 0.04625 (18) | −0.01263 (14) | 0.00349 (13) | −0.01082 (13) |
O1 | 0.0640 (7) | 0.0674 (7) | 0.0561 (6) | −0.0223 (6) | 0.0174 (5) | −0.0124 (5) |
O2 | 0.0592 (7) | 0.0604 (6) | 0.0604 (6) | −0.0184 (5) | −0.0094 (5) | −0.0151 (5) |
O3 | 0.0758 (8) | 0.0647 (7) | 0.0478 (6) | −0.0110 (6) | −0.0011 (5) | 0.0005 (5) |
N1 | 0.0449 (6) | 0.0423 (5) | 0.0435 (5) | −0.0045 (5) | 0.0008 (4) | −0.0115 (4) |
C1 | 0.0536 (8) | 0.0348 (6) | 0.0532 (7) | −0.0069 (5) | 0.0004 (6) | −0.0094 (5) |
C2 | 0.0682 (10) | 0.0485 (8) | 0.0638 (9) | −0.0045 (7) | 0.0141 (8) | −0.0062 (7) |
C3 | 0.0766 (13) | 0.0555 (10) | 0.1082 (17) | 0.0014 (9) | 0.0332 (12) | −0.0121 (10) |
C4 | 0.0642 (12) | 0.0570 (11) | 0.145 (2) | 0.0128 (9) | −0.0064 (14) | −0.0210 (13) |
C5 | 0.0874 (15) | 0.0581 (11) | 0.1115 (18) | 0.0186 (10) | −0.0349 (14) | −0.0258 (11) |
C6 | 0.0789 (12) | 0.0500 (8) | 0.0634 (9) | 0.0034 (8) | −0.0149 (8) | −0.0160 (7) |
C7 | 0.0396 (6) | 0.0440 (6) | 0.0445 (6) | 0.0008 (5) | 0.0015 (5) | −0.0154 (5) |
C8 | 0.0554 (8) | 0.0526 (8) | 0.0460 (7) | −0.0061 (6) | 0.0064 (6) | −0.0129 (6) |
C9 | 0.0680 (10) | 0.0649 (9) | 0.0428 (7) | −0.0058 (8) | 0.0028 (6) | −0.0177 (6) |
C10 | 0.0701 (11) | 0.0673 (10) | 0.0492 (8) | −0.0115 (8) | −0.0030 (7) | −0.0243 (7) |
C11 | 0.0595 (9) | 0.0555 (8) | 0.0503 (7) | −0.0133 (7) | 0.0001 (6) | −0.0182 (6) |
C12 | 0.0406 (7) | 0.0464 (7) | 0.0429 (6) | −0.0011 (5) | 0.0010 (5) | −0.0146 (5) |
C13 | 0.0369 (6) | 0.0435 (6) | 0.0434 (6) | 0.0003 (5) | −0.0011 (5) | −0.0129 (5) |
C14 | 0.0434 (7) | 0.0473 (7) | 0.0474 (7) | −0.0078 (5) | −0.0011 (5) | −0.0127 (5) |
C15 | 0.0395 (6) | 0.0437 (6) | 0.0445 (6) | 0.0013 (5) | −0.0003 (5) | −0.0098 (5) |
C16 | 0.0492 (8) | 0.0508 (7) | 0.0490 (7) | −0.0055 (6) | 0.0005 (6) | −0.0076 (6) |
C17 | 0.0495 (8) | 0.0499 (7) | 0.0464 (7) | 0.0041 (6) | 0.0003 (6) | −0.0051 (6) |
C18 | 0.0587 (9) | 0.0516 (8) | 0.0447 (7) | 0.0086 (6) | −0.0078 (6) | −0.0121 (6) |
C19 | 0.0534 (8) | 0.0458 (7) | 0.0486 (7) | 0.0031 (6) | −0.0076 (6) | −0.0149 (6) |
C20 | 0.0410 (7) | 0.0411 (6) | 0.0446 (6) | 0.0053 (5) | −0.0027 (5) | −0.0126 (5) |
C21 | 0.0455 (7) | 0.0404 (6) | 0.0490 (7) | −0.0019 (5) | −0.0039 (5) | −0.0133 (5) |
C22 | 0.0373 (6) | 0.0385 (6) | 0.0438 (6) | 0.0012 (5) | 0.0000 (5) | −0.0107 (5) |
C23 | 0.0704 (11) | 0.0616 (10) | 0.0617 (10) | −0.0096 (8) | 0.0024 (8) | 0.0004 (8) |
S1—O2 | 1.4197 (11) | C10—C11 | 1.377 (2) |
S1—O1 | 1.4208 (11) | C10—H10 | 0.9300 |
S1—N1 | 1.6521 (12) | C11—C12 | 1.385 (2) |
S1—C1 | 1.7461 (16) | C11—H11 | 0.9300 |
O3—C17 | 1.3641 (17) | C12—C13 | 1.4475 (18) |
O3—C23 | 1.414 (2) | C13—C14 | 1.3748 (18) |
N1—C22 | 1.4340 (16) | C13—C22 | 1.4107 (18) |
N1—C7 | 1.4352 (17) | C14—C15 | 1.4120 (19) |
C1—C2 | 1.386 (2) | C14—H14 | 0.9300 |
C1—C6 | 1.388 (2) | C15—C20 | 1.418 (2) |
C2—C3 | 1.385 (3) | C15—C16 | 1.4219 (19) |
C2—H2 | 0.9300 | C16—C17 | 1.366 (2) |
C3—C4 | 1.386 (3) | C16—H16 | 0.9300 |
C3—H3 | 0.9300 | C17—C18 | 1.407 (2) |
C4—C5 | 1.369 (3) | C18—C19 | 1.356 (2) |
C4—H4 | 0.9300 | C18—H18 | 0.9300 |
C5—C6 | 1.368 (3) | C19—C20 | 1.4200 (19) |
C5—H5 | 0.9300 | C19—H19 | 0.9300 |
C6—H6 | 0.9300 | C20—C21 | 1.4146 (19) |
C7—C8 | 1.3833 (19) | C21—C22 | 1.3662 (18) |
C7—C12 | 1.3933 (19) | C21—H21 | 0.9300 |
C8—C9 | 1.386 (2) | C23—H23A | 0.9600 |
C8—H8 | 0.9300 | C23—H23B | 0.9600 |
C9—C10 | 1.381 (2) | C23—H23C | 0.9600 |
C9—H9 | 0.9300 | ||
O2—S1—O1 | 119.66 (7) | C10—C11—H11 | 120.6 |
O2—S1—N1 | 106.69 (6) | C12—C11—H11 | 120.6 |
O1—S1—N1 | 106.78 (7) | C11—C12—C7 | 119.86 (13) |
O2—S1—C1 | 109.52 (7) | C11—C12—C13 | 131.94 (13) |
O1—S1—C1 | 108.60 (8) | C7—C12—C13 | 108.10 (12) |
N1—S1—C1 | 104.52 (6) | C14—C13—C22 | 120.69 (12) |
C17—O3—C23 | 117.30 (13) | C14—C13—C12 | 131.56 (13) |
C22—N1—C7 | 107.12 (10) | C22—C13—C12 | 107.65 (11) |
C22—N1—S1 | 122.77 (9) | C13—C14—C15 | 119.27 (13) |
C7—N1—S1 | 122.08 (9) | C13—C14—H14 | 120.4 |
C2—C1—C6 | 121.82 (16) | C15—C14—H14 | 120.4 |
C2—C1—S1 | 119.46 (12) | C14—C15—C20 | 119.23 (12) |
C6—C1—S1 | 118.64 (13) | C14—C15—C16 | 120.91 (13) |
C3—C2—C1 | 117.85 (18) | C20—C15—C16 | 119.81 (13) |
C3—C2—H2 | 121.1 | C17—C16—C15 | 119.97 (14) |
C1—C2—H2 | 121.1 | C17—C16—H16 | 120.0 |
C2—C3—C4 | 120.2 (2) | C15—C16—H16 | 120.0 |
C2—C3—H3 | 119.9 | O3—C17—C16 | 125.14 (15) |
C4—C3—H3 | 119.9 | O3—C17—C18 | 114.46 (13) |
C5—C4—C3 | 120.8 (2) | C16—C17—C18 | 120.40 (14) |
C5—C4—H4 | 119.6 | C19—C18—C17 | 120.70 (14) |
C3—C4—H4 | 119.6 | C19—C18—H18 | 119.6 |
C6—C5—C4 | 120.1 (2) | C17—C18—H18 | 119.6 |
C6—C5—H5 | 119.9 | C18—C19—C20 | 121.16 (14) |
C4—C5—H5 | 119.9 | C18—C19—H19 | 119.4 |
C5—C6—C1 | 119.11 (19) | C20—C19—H19 | 119.4 |
C5—C6—H6 | 120.4 | C21—C20—C15 | 120.89 (12) |
C1—C6—H6 | 120.4 | C21—C20—C19 | 121.12 (13) |
C8—C7—C12 | 121.66 (13) | C15—C20—C19 | 117.95 (13) |
C8—C7—N1 | 129.40 (13) | C22—C21—C20 | 118.05 (13) |
C12—C7—N1 | 108.81 (11) | C22—C21—H21 | 121.0 |
C7—C8—C9 | 117.38 (14) | C20—C21—H21 | 121.0 |
C7—C8—H8 | 121.3 | C21—C22—C13 | 121.87 (12) |
C9—C8—H8 | 121.3 | C21—C22—N1 | 129.70 (12) |
C10—C9—C8 | 121.48 (14) | C13—C22—N1 | 108.31 (11) |
C10—C9—H9 | 119.3 | O3—C23—H23A | 109.5 |
C8—C9—H9 | 119.3 | O3—C23—H23B | 109.5 |
C11—C10—C9 | 120.74 (15) | H23A—C23—H23B | 109.5 |
C11—C10—H10 | 119.6 | O3—C23—H23C | 109.5 |
C9—C10—H10 | 119.6 | H23A—C23—H23C | 109.5 |
C10—C11—C12 | 118.87 (14) | H23B—C23—H23C | 109.5 |
O2—S1—N1—C22 | 41.56 (12) | C11—C12—C13—C14 | −0.7 (3) |
O1—S1—N1—C22 | 170.62 (11) | C7—C12—C13—C14 | −176.98 (14) |
C1—S1—N1—C22 | −74.41 (12) | C11—C12—C13—C22 | 175.59 (15) |
O2—S1—N1—C7 | −173.68 (10) | C7—C12—C13—C22 | −0.70 (15) |
O1—S1—N1—C7 | −44.62 (12) | C22—C13—C14—C15 | −0.6 (2) |
C1—S1—N1—C7 | 70.35 (11) | C12—C13—C14—C15 | 175.24 (13) |
O2—S1—C1—C2 | −29.51 (14) | C13—C14—C15—C20 | 0.2 (2) |
O1—S1—C1—C2 | −161.84 (12) | C13—C14—C15—C16 | −177.31 (13) |
N1—S1—C1—C2 | 84.48 (13) | C14—C15—C16—C17 | 176.37 (13) |
O2—S1—C1—C6 | 153.51 (12) | C20—C15—C16—C17 | −1.2 (2) |
O1—S1—C1—C6 | 21.18 (14) | C23—O3—C17—C16 | 5.4 (2) |
N1—S1—C1—C6 | −92.51 (13) | C23—O3—C17—C18 | −173.41 (14) |
C6—C1—C2—C3 | 1.9 (2) | C15—C16—C17—O3 | −177.59 (14) |
S1—C1—C2—C3 | −174.97 (13) | C15—C16—C17—C18 | 1.2 (2) |
C1—C2—C3—C4 | −0.1 (3) | O3—C17—C18—C19 | 178.60 (14) |
C2—C3—C4—C5 | −1.8 (3) | C16—C17—C18—C19 | −0.3 (2) |
C3—C4—C5—C6 | 1.9 (3) | C17—C18—C19—C20 | −0.6 (2) |
C4—C5—C6—C1 | −0.1 (3) | C14—C15—C20—C21 | 0.4 (2) |
C2—C1—C6—C5 | −1.9 (3) | C16—C15—C20—C21 | 177.97 (12) |
S1—C1—C6—C5 | 175.06 (14) | C14—C15—C20—C19 | −177.30 (12) |
C22—N1—C7—C8 | −176.94 (14) | C16—C15—C20—C19 | 0.3 (2) |
S1—N1—C7—C8 | 33.57 (19) | C18—C19—C20—C21 | −177.08 (13) |
C22—N1—C7—C12 | −1.03 (14) | C18—C19—C20—C15 | 0.6 (2) |
S1—N1—C7—C12 | −150.52 (10) | C15—C20—C21—C22 | −0.6 (2) |
C12—C7—C8—C9 | −0.2 (2) | C19—C20—C21—C22 | 177.01 (12) |
N1—C7—C8—C9 | 175.27 (14) | C20—C21—C22—C13 | 0.2 (2) |
C7—C8—C9—C10 | −0.3 (3) | C20—C21—C22—N1 | −175.36 (12) |
C8—C9—C10—C11 | 0.4 (3) | C14—C13—C22—C21 | 0.4 (2) |
C9—C10—C11—C12 | −0.1 (3) | C12—C13—C22—C21 | −176.35 (12) |
C10—C11—C12—C7 | −0.4 (2) | C14—C13—C22—N1 | 176.82 (12) |
C10—C11—C12—C13 | −176.35 (15) | C12—C13—C22—N1 | 0.06 (14) |
C8—C7—C12—C11 | 0.5 (2) | C7—N1—C22—C21 | 176.62 (13) |
N1—C7—C12—C11 | −175.75 (13) | S1—N1—C22—C21 | −34.15 (19) |
C8—C7—C12—C13 | 177.36 (13) | C7—N1—C22—C13 | 0.58 (14) |
N1—C7—C12—C13 | 1.07 (15) | S1—N1—C22—C13 | 149.81 (10) |
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8···O1 | 0.93 | 2.36 | 2.951 (2) | 121 |
C21—H21···O2 | 0.93 | 2.36 | 2.9460 (18) | 121 |
C6—H6···O1 | 0.93 | 2.54 | 2.906 (2) | 104 |
Experimental details
Crystal data | |
Chemical formula | C23H17NO3S |
Mr | 387.44 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 295 |
a, b, c (Å) | 8.3608 (3), 9.3103 (3), 12.1754 (4) |
α, β, γ (°) | 76.061 (2), 88.680 (1), 88.715 (2) |
V (Å3) | 919.46 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.20 |
Crystal size (mm) | 0.30 × 0.20 × 0.16 |
Data collection | |
Diffractometer | Bruker Kappa APEX2 diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.909, 0.969 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 23200, 5739, 4330 |
Rint | 0.022 |
(sin θ/λ)max (Å−1) | 0.722 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.134, 1.05 |
No. of reflections | 5739 |
No. of parameters | 254 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.29, −0.35 |
Computer programs: APEX2 (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2003).
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8···O1 | 0.93 | 2.36 | 2.951 (2) | 121 |
C21—H21···O2 | 0.93 | 2.36 | 2.9460 (18) | 121 |
C6—H6···O1 | 0.93 | 2.54 | 2.906 (2) | 104 |
Acknowledgements
The authors acknowledge the Sophisticated Analytical Instrument Facility, Indian Institute of Technology, Madras, for the data collection.
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 derivatives exhibit antitumor (Itoigawa et al., 2000), antioxidative (Tachibana et al., 2001), anti-inflammatory and antimutagenic (Ramsewak et al., 1999) activities. These compounds are thermally and photochemically stable, which makes them useful materials for technological applications. For instance, the carbazole ring is easily funtionalized and covalently linked to other molecules (Diaz et al., 2002). This enables its use as a convenient building block for the design and synthesis of molecular glasses, which are widely studied as components of electroactive and photoactive materials (Zhang et al., 2004).
The geometric parameters in (I), (Fig. 1) agree with the reported similiar structures (Hökelek et al., 1998; Hosomi et al., 2000). The mean planes of the benzo[b]carbazole and phenyl ring form a dihedral angle of 77.17 (4)°. The N1—S1—C1 plane is almost orthogonal to carbazole ring [dihedral angle 89.54 (5)°] and phenyl ring [dihedral angle 86.02 (6)°]. The best plane of pyrrole ring N1/C7/C12/C13/C22 subtends a dihedral angle of 30.13 (8)° with sulfonyl group.
The average S—O, S—C, and S—N distances are comparable with those observed in similiar structures (Chakkaravarthi et al., 2007; Sankaranarayanan et al., 2000). The N—C bond lengths, namely N1—C7 and N1—C22 [1.4352 (17) & 1.4340 (16) Å] deviate slightly from the normal mean value reported in the literature (Allen et al., 1987). This indicates that the substitution of the phenylsulfonyl group at atom N1 results in lengthening of the C—N bond lengths. This may be due to the electron-withdrawing character of the phenylsulfonyl group (Govindasamy et al., 1998).
The S atom exhibits significant deviation from a regular tetrahedron, with the largest deviations being seen for the O1—S1—O2 [120.09 (9)°] and O1—S1—N1 [106.78 (7)°] angles. The widening of the angles may be due to repulsive interactions between the two short S=O bonds, similar to what is observed in related structures (Chakkaravarthi et al., 2008; Rodriguez et al., 1995). The sum of the bond angles around N1 [351.97°] indicate the sp2 hybridized state of the atom N, in the molecule.
The benzene ring C15—C20 is almost coplanar with methoxy group [torsion angle C23—O3—C17—C16 5.4 (2)°]. The torsion angles O1—S1—N1—C7 and O2—S1—N1—C22 [-44.62 (12)° and 41.56 (12)°, respectively] describe the syn conformation of the phenylsulfonyl group with respect to benzocarbazole ring system. This conformation is influenced by the intramolecular C—H··· O hydrogen bonds, C8—H8··· O1 and C21—H21···O2, involving sulfonyl atoms O1 and O2 (Table 1). The intramolecular hydrogen bonds form a six-membered ring with a graph-set motif of S(6) and a five-membered ring with a graph-set motif of S(5) (Etter et al., 1990).