organic compounds
N-{4-[(4-Methylphenyl)sulfamoyl]phenyl}acetamide
aMaterials Chemistry Laboratory, Department of Chemistry, Government College University, Lahore 54000, Pakistan, and bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: edward.tiekink@gmail.com
The title molecule, C15H16N2O3S, has a twisted U-shaped conformation. The twist occurs in the central C—S(=O)2N(H)—C unit with the C—S—N—C torsion angle being −58.38 (14)°. The benzene rings lie to the same side of the molecule and form a dihedral angle of 67.03 (10)°. The crystal packing features N—H⋯O hydrogen bonding, which leads to supramolecular chains with a tubular topology along the b axis. Intramolecular C—H⋯O interactions are also observed.
Related literature
For background to the pharmacological uses of et al. (1998); Kazmierski et al. (2004). For related structures, see: Khan et al. (2010); Sharif et al. (2010).
see: BeateExperimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); 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) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S160053681002739X/pv2305sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053681002739X/pv2305Isup2.hkl
A mixture of 4-methylaniline (250 mg, 2.33 mmol) and 4-(acetylamino)benzenesulfonyl chloride (545 mg, 2.33 mmol) in distilled water (25 ml) was stirred, while maintaining pH of the reaction mixture at 8–10 by adding 3% sodium carbonate solution. The reaction was monitored by TLC. After completion of the reaction, precipitates were filtered, washed and dried. The crude product obtained was crystallized by dissolving in methanol followed by slow evaporation of the solvent. M. pt. 493 K.
The C-bound H atoms were geometrically placed (C–H = 0.93–0.96 Å) and refined as riding with Uiso(H) = 1.2–1.5Ueq(C). The N-bound H atoms were refined with the distance restraint N–H = 0.88±0.01 Å, and with Uiso(H) = 1.2Ueq(N). In the final
three low angle reflections evidently effected by the beam stop were omitted, i.e. 0 0 1, 0 1 0, and 0 1 1.Sulfonamide drugs are used, for example, as inhibitors of HIV infection (Kazmierski et al., 2004) and as anti-hypertensive drugs (Beate et al., 1998). In connection with on-going structural studies of
(Khan et al., 2010; Sharif et al., 2010), the crystal and molecular structure of the title compound, (I), was investigated.To a first approximation, the molecule of (I), Fig. 1, has a twisted U-shaped conformation with the two benzene residues projecting to the same side of the molecule with reference to the central S(═O)2N moiety but, being splayed with respect to each other. The dihedral angle formed between the two benzene rings is 67.03 (10) ° and the C1–N1–S1–C8 torsion angle of -58.38 (14) ° indicates a twist in the molecule. Both S-bound O atoms lie to one side of the S-bound benzene ring [the O1–S1–C8–C9 torsion angle = 169.12 (13) ° and O2–S1–C8–C9 = 39.25 (15) °], and the N1 atom to the other [N1–S1–C8–C9 = -73.19 (15) °]. The amide group is co-planar with the benzene ring to which it is attached as seen in the C10–C11—N2–C14 torsion angle of 7.2 (3) °.
The formation of N–H···O hydrogen bonds dominate the crystal packing, Table 1. Thus, the sulfamoyl-N1–H hydrogen bonds to the amide-O, and the amide-N2–H hydrogen bonds to a sulfamoyl-O2 atom; the sulfamoyl-O1 atom forms intramolecular C–H···O interactions as does the amide-O3 atom, Table 1. The N–H···O hydrogen bonds result in the formation of a supramolecular chain along the b axis with a tubular topology, Fig. 2. These assemble into layers in the ab plane. Interactions between layers are of the type π···π [ring centroid(C1–C6)···ring centroid(C1–C6)i = 3.8185 (13) for i: 1 - x, -y, 2 - z], Fig. 3.
For background to the pharmacological uses of
see: Beate et al. (1998); Kazmierski et al. (2004). For related structures, see: Khan et al. (2010); Sharif et al. (2010).Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C15H16N2O3S | Z = 2 |
Mr = 304.37 | F(000) = 320 |
Triclinic, P1 | Dx = 1.356 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.2224 (3) Å | Cell parameters from 7070 reflections |
b = 8.3878 (3) Å | θ = 2.9–28.3° |
c = 13.0796 (5) Å | µ = 0.23 mm−1 |
α = 71.482 (2)° | T = 293 K |
β = 75.749 (2)° | Block, colourless |
γ = 61.265 (1)° | 0.23 × 0.14 × 0.08 mm |
V = 745.27 (5) Å3 |
Bruker APEXII CCD diffractometer | 3374 independent reflections |
Radiation source: fine-focus sealed tube | 2918 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
φ and ω scans | θmax = 27.5°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −10→10 |
Tmin = 0.887, Tmax = 0.951 | k = −10→10 |
12704 measured reflections | l = −16→16 |
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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0681P)2 + 0.1946P] where P = (Fo2 + 2Fc2)/3 |
3374 reflections | (Δ/σ)max = 0.001 |
198 parameters | Δρmax = 0.34 e Å−3 |
2 restraints | Δρmin = −0.34 e Å−3 |
C15H16N2O3S | γ = 61.265 (1)° |
Mr = 304.37 | V = 745.27 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.2224 (3) Å | Mo Kα radiation |
b = 8.3878 (3) Å | µ = 0.23 mm−1 |
c = 13.0796 (5) Å | T = 293 K |
α = 71.482 (2)° | 0.23 × 0.14 × 0.08 mm |
β = 75.749 (2)° |
Bruker APEXII CCD diffractometer | 3374 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2918 reflections with I > 2σ(I) |
Tmin = 0.887, Tmax = 0.951 | Rint = 0.024 |
12704 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 2 restraints |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.34 e Å−3 |
3374 reflections | Δρmin = −0.34 e Å−3 |
198 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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 | 0.12002 (5) | 0.25013 (5) | 0.75637 (3) | 0.04453 (15) | |
O1 | −0.01522 (16) | 0.24530 (17) | 0.84756 (11) | 0.0578 (3) | |
O2 | 0.09188 (18) | 0.42467 (16) | 0.67943 (11) | 0.0581 (3) | |
O3 | 0.4166 (2) | −0.2526 (2) | 0.37348 (12) | 0.0728 (4) | |
N1 | 0.31999 (19) | 0.17594 (19) | 0.79741 (11) | 0.0459 (3) | |
H1N | 0.391 (2) | 0.214 (3) | 0.7440 (11) | 0.055* | |
N2 | 0.21546 (19) | −0.29178 (19) | 0.51939 (11) | 0.0437 (3) | |
H2N | 0.164 (2) | −0.365 (2) | 0.5573 (13) | 0.052* | |
C1 | 0.4103 (2) | −0.0054 (2) | 0.86613 (12) | 0.0429 (3) | |
C2 | 0.5858 (3) | −0.1276 (3) | 0.83046 (15) | 0.0614 (5) | |
H2 | 0.6388 | −0.0963 | 0.7601 | 0.074* | |
C3 | 0.6828 (3) | −0.2962 (3) | 0.89901 (17) | 0.0693 (5) | |
H3 | 0.8020 | −0.3765 | 0.8746 | 0.083* | |
C4 | 0.6068 (3) | −0.3481 (3) | 1.00264 (16) | 0.0596 (5) | |
C5 | 0.4290 (3) | −0.2261 (3) | 1.03546 (15) | 0.0633 (5) | |
H5 | 0.3738 | −0.2601 | 1.1047 | 0.076* | |
C6 | 0.3305 (3) | −0.0558 (3) | 0.96922 (14) | 0.0553 (4) | |
H6 | 0.2113 | 0.0244 | 0.9938 | 0.066* | |
C7 | 0.7165 (4) | −0.5295 (3) | 1.0789 (2) | 0.0835 (7) | |
H7A | 0.7837 | −0.5081 | 1.1196 | 0.125* | |
H7B | 0.8030 | −0.6197 | 1.0377 | 0.125* | |
H7C | 0.6324 | −0.5759 | 1.1278 | 0.125* | |
C8 | 0.1436 (2) | 0.0924 (2) | 0.68549 (13) | 0.0405 (3) | |
C9 | 0.2424 (3) | 0.0930 (2) | 0.58393 (15) | 0.0541 (4) | |
H9 | 0.2931 | 0.1780 | 0.5537 | 0.065* | |
C10 | 0.2674 (3) | −0.0305 (2) | 0.52644 (14) | 0.0532 (4) | |
H10 | 0.3330 | −0.0276 | 0.4575 | 0.064* | |
C11 | 0.1941 (2) | −0.1593 (2) | 0.57195 (12) | 0.0387 (3) | |
C12 | 0.0926 (2) | −0.1576 (2) | 0.67372 (13) | 0.0468 (4) | |
H12 | 0.0410 | −0.2419 | 0.7040 | 0.056* | |
C13 | 0.0671 (2) | −0.0332 (2) | 0.73066 (13) | 0.0472 (4) | |
H13 | −0.0010 | −0.0335 | 0.7989 | 0.057* | |
C14 | 0.3207 (2) | −0.3310 (2) | 0.42545 (13) | 0.0451 (4) | |
C15 | 0.3142 (3) | −0.4801 (2) | 0.38969 (15) | 0.0561 (4) | |
H15A | 0.3141 | −0.4457 | 0.3123 | 0.084* | |
H15B | 0.2028 | −0.4941 | 0.4240 | 0.084* | |
H15C | 0.4215 | −0.5962 | 0.4098 | 0.084* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0380 (2) | 0.0362 (2) | 0.0593 (3) | −0.01654 (16) | −0.00415 (16) | −0.01162 (17) |
O1 | 0.0426 (6) | 0.0572 (7) | 0.0737 (8) | −0.0215 (5) | 0.0084 (6) | −0.0273 (6) |
O2 | 0.0592 (7) | 0.0366 (6) | 0.0783 (8) | −0.0216 (5) | −0.0167 (6) | −0.0052 (6) |
O3 | 0.0807 (10) | 0.0762 (9) | 0.0703 (8) | −0.0511 (8) | 0.0268 (7) | −0.0277 (7) |
N1 | 0.0425 (7) | 0.0476 (7) | 0.0521 (7) | −0.0252 (6) | −0.0035 (6) | −0.0098 (6) |
N2 | 0.0436 (7) | 0.0411 (7) | 0.0487 (7) | −0.0239 (6) | −0.0029 (5) | −0.0061 (5) |
C1 | 0.0433 (8) | 0.0455 (8) | 0.0463 (8) | −0.0229 (7) | −0.0056 (6) | −0.0127 (6) |
C2 | 0.0550 (10) | 0.0598 (11) | 0.0530 (9) | −0.0163 (9) | 0.0022 (8) | −0.0132 (8) |
C3 | 0.0625 (12) | 0.0567 (11) | 0.0703 (12) | −0.0092 (9) | −0.0084 (10) | −0.0185 (9) |
C4 | 0.0733 (12) | 0.0496 (10) | 0.0644 (11) | −0.0289 (9) | −0.0261 (9) | −0.0068 (8) |
C5 | 0.0692 (12) | 0.0741 (13) | 0.0490 (9) | −0.0402 (11) | −0.0099 (8) | −0.0003 (9) |
C6 | 0.0471 (9) | 0.0671 (11) | 0.0497 (9) | −0.0262 (8) | −0.0002 (7) | −0.0130 (8) |
C7 | 0.1059 (19) | 0.0585 (13) | 0.0869 (15) | −0.0302 (13) | −0.0458 (14) | −0.0009 (11) |
C8 | 0.0349 (7) | 0.0340 (7) | 0.0512 (8) | −0.0156 (6) | −0.0072 (6) | −0.0056 (6) |
C9 | 0.0579 (10) | 0.0488 (9) | 0.0631 (10) | −0.0371 (8) | 0.0089 (8) | −0.0120 (8) |
C10 | 0.0578 (10) | 0.0520 (9) | 0.0530 (9) | −0.0345 (8) | 0.0110 (7) | −0.0124 (7) |
C11 | 0.0333 (7) | 0.0342 (7) | 0.0455 (7) | −0.0151 (6) | −0.0079 (6) | −0.0022 (6) |
C12 | 0.0528 (9) | 0.0448 (8) | 0.0483 (8) | −0.0322 (7) | 0.0000 (7) | −0.0043 (7) |
C13 | 0.0525 (9) | 0.0460 (8) | 0.0458 (8) | −0.0300 (7) | 0.0017 (7) | −0.0060 (6) |
C14 | 0.0395 (8) | 0.0408 (8) | 0.0474 (8) | −0.0137 (6) | −0.0080 (6) | −0.0048 (6) |
C15 | 0.0551 (10) | 0.0522 (10) | 0.0601 (10) | −0.0186 (8) | −0.0121 (8) | −0.0155 (8) |
S1—O1 | 1.4214 (13) | C5—H5 | 0.9300 |
S1—O2 | 1.4362 (12) | C6—H6 | 0.9300 |
S1—N1 | 1.6178 (14) | C7—H7A | 0.9600 |
S1—C8 | 1.7581 (16) | C7—H7B | 0.9600 |
O3—C14 | 1.211 (2) | C7—H7C | 0.9600 |
N1—C1 | 1.431 (2) | C8—C9 | 1.376 (2) |
N1—H1N | 0.877 (9) | C8—C13 | 1.383 (2) |
N2—C14 | 1.351 (2) | C9—C10 | 1.376 (2) |
N2—C11 | 1.406 (2) | C9—H9 | 0.9300 |
N2—H2N | 0.867 (9) | C10—C11 | 1.388 (2) |
C1—C2 | 1.378 (2) | C10—H10 | 0.9300 |
C1—C6 | 1.377 (2) | C11—C12 | 1.386 (2) |
C2—C3 | 1.379 (3) | C12—C13 | 1.376 (2) |
C2—H2 | 0.9300 | C12—H12 | 0.9300 |
C3—C4 | 1.374 (3) | C13—H13 | 0.9300 |
C3—H3 | 0.9300 | C14—C15 | 1.495 (2) |
C4—C5 | 1.378 (3) | C15—H15A | 0.9600 |
C4—C7 | 1.511 (3) | C15—H15B | 0.9600 |
C5—C6 | 1.376 (3) | C15—H15C | 0.9600 |
O1—S1—O2 | 119.51 (8) | H7A—C7—H7B | 109.5 |
O1—S1—N1 | 109.54 (8) | C4—C7—H7C | 109.5 |
O2—S1—N1 | 104.83 (7) | H7A—C7—H7C | 109.5 |
O1—S1—C8 | 107.30 (7) | H7B—C7—H7C | 109.5 |
O2—S1—C8 | 107.71 (8) | C9—C8—C13 | 119.74 (15) |
N1—S1—C8 | 107.41 (7) | C9—C8—S1 | 119.07 (12) |
C1—N1—S1 | 122.71 (10) | C13—C8—S1 | 121.19 (12) |
C1—N1—H1N | 116.6 (13) | C8—C9—C10 | 121.02 (14) |
S1—N1—H1N | 108.7 (13) | C8—C9—H9 | 119.5 |
C14—N2—C11 | 128.32 (13) | C10—C9—H9 | 119.5 |
C14—N2—H2N | 117.5 (13) | C9—C10—C11 | 119.64 (15) |
C11—N2—H2N | 113.7 (12) | C9—C10—H10 | 120.2 |
C2—C1—C6 | 119.49 (17) | C11—C10—H10 | 120.2 |
C2—C1—N1 | 119.02 (15) | C12—C11—C10 | 119.07 (15) |
C6—C1—N1 | 121.37 (15) | C12—C11—N2 | 117.67 (13) |
C1—C2—C3 | 120.06 (18) | C10—C11—N2 | 123.25 (14) |
C1—C2—H2 | 120.0 | C13—C12—C11 | 121.06 (14) |
C3—C2—H2 | 120.0 | C13—C12—H12 | 119.5 |
C4—C3—C2 | 121.35 (19) | C11—C12—H12 | 119.5 |
C4—C3—H3 | 119.3 | C12—C13—C8 | 119.45 (15) |
C2—C3—H3 | 119.3 | C12—C13—H13 | 120.3 |
C3—C4—C5 | 117.56 (18) | C8—C13—H13 | 120.3 |
C3—C4—C7 | 121.1 (2) | O3—C14—N2 | 122.59 (16) |
C5—C4—C7 | 121.3 (2) | O3—C14—C15 | 121.55 (16) |
C6—C5—C4 | 122.19 (18) | N2—C14—C15 | 115.85 (15) |
C6—C5—H5 | 118.9 | C14—C15—H15A | 109.5 |
C4—C5—H5 | 118.9 | C14—C15—H15B | 109.5 |
C5—C6—C1 | 119.30 (17) | H15A—C15—H15B | 109.5 |
C5—C6—H6 | 120.3 | C14—C15—H15C | 109.5 |
C1—C6—H6 | 120.3 | H15A—C15—H15C | 109.5 |
C4—C7—H7A | 109.5 | H15B—C15—H15C | 109.5 |
C4—C7—H7B | 109.5 | ||
O1—S1—N1—C1 | 57.85 (14) | O1—S1—C8—C13 | −11.81 (16) |
O2—S1—N1—C1 | −172.76 (12) | O2—S1—C8—C13 | −141.68 (14) |
C8—S1—N1—C1 | −58.38 (14) | N1—S1—C8—C13 | 105.88 (14) |
S1—N1—C1—C2 | 121.29 (16) | C13—C8—C9—C10 | −0.3 (3) |
S1—N1—C1—C6 | −62.61 (19) | S1—C8—C9—C10 | 178.75 (15) |
C6—C1—C2—C3 | −2.2 (3) | C8—C9—C10—C11 | −0.9 (3) |
N1—C1—C2—C3 | 173.98 (18) | C9—C10—C11—C12 | 1.7 (3) |
C1—C2—C3—C4 | 1.3 (3) | C9—C10—C11—N2 | −179.09 (16) |
C2—C3—C4—C5 | 0.6 (3) | C14—N2—C11—C12 | −173.58 (15) |
C2—C3—C4—C7 | −177.6 (2) | C14—N2—C11—C10 | 7.2 (3) |
C3—C4—C5—C6 | −1.7 (3) | C10—C11—C12—C13 | −1.3 (2) |
C7—C4—C5—C6 | 176.52 (19) | N2—C11—C12—C13 | 179.41 (15) |
C4—C5—C6—C1 | 0.8 (3) | C11—C12—C13—C8 | 0.1 (3) |
C2—C1—C6—C5 | 1.2 (3) | C9—C8—C13—C12 | 0.7 (3) |
N1—C1—C6—C5 | −174.91 (16) | S1—C8—C13—C12 | −178.36 (13) |
O1—S1—C8—C9 | 169.12 (13) | C11—N2—C14—O3 | 1.1 (3) |
O2—S1—C8—C9 | 39.25 (15) | C11—N2—C14—C15 | −179.77 (14) |
N1—S1—C8—C9 | −73.19 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1 | 0.93 | 2.60 | 3.125 (3) | 116 |
C10—H10···O3 | 0.93 | 2.22 | 2.818 (3) | 121 |
C13—H13···O1 | 0.93 | 2.56 | 2.914 (3) | 103 |
N1—H1n···O3i | 0.88 (2) | 1.99 (2) | 2.853 (3) | 169 (2) |
N2—H2n···O2ii | 0.87 (2) | 2.18 (2) | 3.029 (2) | 165 (2) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C15H16N2O3S |
Mr | 304.37 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 8.2224 (3), 8.3878 (3), 13.0796 (5) |
α, β, γ (°) | 71.482 (2), 75.749 (2), 61.265 (1) |
V (Å3) | 745.27 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.23 |
Crystal size (mm) | 0.23 × 0.14 × 0.08 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.887, 0.951 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12704, 3374, 2918 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.124, 1.04 |
No. of reflections | 3374 |
No. of parameters | 198 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.34, −0.34 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1 | 0.93 | 2.60 | 3.125 (3) | 116 |
C10—H10···O3 | 0.93 | 2.22 | 2.818 (3) | 121 |
C13—H13···O1 | 0.93 | 2.56 | 2.914 (3) | 103 |
N1—H1n···O3i | 0.88 (2) | 1.99 (2) | 2.853 (3) | 169 (2) |
N2—H2n···O2ii | 0.87 (2) | 2.18 (2) | 3.029 (2) | 165 (2) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) x, y−1, z. |
Footnotes
‡Additional correspondence author, e-mail: iuklodhi@yahoo.com.
Acknowledgements
We are grateful to Mr Munawar Hussain, Engineering Cell GC University, Lahore, for providing support services to the Materials Chemistry Laboratory.
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Sulfonamide drugs are used, for example, as inhibitors of HIV infection (Kazmierski et al., 2004) and as anti-hypertensive drugs (Beate et al., 1998). In connection with on-going structural studies of sulfonamides (Khan et al., 2010; Sharif et al., 2010), the crystal and molecular structure of the title compound, (I), was investigated.
To a first approximation, the molecule of (I), Fig. 1, has a twisted U-shaped conformation with the two benzene residues projecting to the same side of the molecule with reference to the central S(═O)2N moiety but, being splayed with respect to each other. The dihedral angle formed between the two benzene rings is 67.03 (10) ° and the C1–N1–S1–C8 torsion angle of -58.38 (14) ° indicates a twist in the molecule. Both S-bound O atoms lie to one side of the S-bound benzene ring [the O1–S1–C8–C9 torsion angle = 169.12 (13) ° and O2–S1–C8–C9 = 39.25 (15) °], and the N1 atom to the other [N1–S1–C8–C9 = -73.19 (15) °]. The amide group is co-planar with the benzene ring to which it is attached as seen in the C10–C11—N2–C14 torsion angle of 7.2 (3) °.
The formation of N–H···O hydrogen bonds dominate the crystal packing, Table 1. Thus, the sulfamoyl-N1–H hydrogen bonds to the amide-O, and the amide-N2–H hydrogen bonds to a sulfamoyl-O2 atom; the sulfamoyl-O1 atom forms intramolecular C–H···O interactions as does the amide-O3 atom, Table 1. The N–H···O hydrogen bonds result in the formation of a supramolecular chain along the b axis with a tubular topology, Fig. 2. These assemble into layers in the ab plane. Interactions between layers are of the type π···π [ring centroid(C1–C6)···ring centroid(C1–C6)i = 3.8185 (13) for i: 1 - x, -y, 2 - z], Fig. 3.