organic compounds
N-(3,4-Dimethylphenyl)benzenesulfonamide
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 structure of the title compound, C14H15NO2S, shows the sulfonamide N atom to be approximately perpendicular to the plane through the S-bound benzene ring [the N—S—C—C torsion angle is −87.4 (3)°] and to lie to the opposide side of this ring to the two sulfonamide O atoms. The N-bound benzene ring is splayed out with respect to the rest of the molecule so that overall, the molecule adopts a twisted conformation. The dihedral angle between the two benzene rings is 64.5 (3)°. In the crystal, supramolecular chains aligned along the b axis are formed via N—H⋯O hydrogen bonds.
Related literature
For background to the pharmacological uses of ); Mandell & Sande (1992). For the structure of the S-tosyl derivative, see: Gowda et al. (2009). For related structures, see: Khan et al. (2010); Sharif et al. (2010).
see: Korolkovas (1988Experimental
Crystal data
|
Refinement
|
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/S1600536810026656/hb5533sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810026656/hb5533Isup2.hkl
To 3,4-dimethyl aniline (484 mg, 4 mmol) in distilled water (10 ml) was added benzene sulfonyl chloride (510 ml, 4 mmol) with stirring at room temperature while maintaining the pH of the reaction mixture at 8 using 3% sodium carbonate. The progress of the reaction was monitored by TLC. The precipitate formed was washed with water, dried and crystallized from a methanol/ethyl acetate mixture (50:50 V/V) to yield colourless prisms of (I); m. pt 414 K.
The C-bound H atoms were geometrically placed (C–H = 0.93–0.96 Å) and refined as riding with Uiso(H) = 1.2Ueq(C). The N-bound H atom was refined with the distance restraint N–H = 0.86±0.01 Å, and with Uiso(H) = 1.2Ueq(N). High thermal motion was noted for several atoms in the S-bound benzene ring but multiple positions were not resolved. The anisotropic displacement parameters for this ring were refined with the ISOR command to constrain these to be approximately isotropic.
In continuation of on-going structural studies of
(Khan et al., 2010; Sharif et al., 2010), of interest owing to their putative anti-microbial activity (Korolkovas, 1988; Mandell & Sande, 1992), the crystal and molecular structure of the title compound, (I), was investigated.In (I), both sulfonamido-O atoms lie to one side of the S-bound benzene ring [the O1–S1–C1–C6 and O2–S1–C1–C2 torsion angles are 19.3 (4) and -28.0 (3) °, respectively] and are on the opposite side of this ring to the sulfonamido-N1 atom, Fig. 1. The latter is approximately perpendicular to the benzene ring [N1–S1–C1–C2 is -87.4 (3) °] with the N-bound benzene ring clearly displaced to one side of the molecule; the dihedral angle formed between the two benzene rings is 64.5 (3) °. Although not isomorphous, the overall
found in the closely related derivative, with an S-bound tolsyl group, is almost identical (Gowda et al. 2009).The presence of N1–H···O2 hydrogen bonding, Table 1, leads to the formation of supramolecular chains along the b axis, Fig. 2.
For background to the pharmacological uses of
see: Korolkovas (1988); Mandell & Sande (1992). For the structure of the S-tolsyl derivative, see: Gowda et al. (2009). 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).C14H15NO2S | F(000) = 1104 |
Mr = 261.33 | Dx = 1.258 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 2975 reflections |
a = 24.2129 (12) Å | θ = 2.5–24.2° |
b = 9.2616 (5) Å | µ = 0.23 mm−1 |
c = 16.5584 (16) Å | T = 293 K |
β = 132.014 (2)° | Prism, colourless |
V = 2758.9 (3) Å3 | 0.31 × 0.08 × 0.07 mm |
Z = 8 |
Bruker APEXII CCD diffractometer | 2864 independent reflections |
Radiation source: fine-focus sealed tube | 2112 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.036 |
φ and ω scans | θmax = 26.5°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −30→30 |
Tmin = 0.795, Tmax = 0.947 | k = −11→11 |
11486 measured reflections | l = −20→20 |
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)] = 0.055 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.196 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.09 | w = 1/[σ2(Fo2) + (0.1221P)2 + 0.6451P] where P = (Fo2 + 2Fc2)/3 |
2864 reflections | (Δ/σ)max < 0.001 |
168 parameters | Δρmax = 0.56 e Å−3 |
37 restraints | Δρmin = −0.65 e Å−3 |
C14H15NO2S | V = 2758.9 (3) Å3 |
Mr = 261.33 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 24.2129 (12) Å | µ = 0.23 mm−1 |
b = 9.2616 (5) Å | T = 293 K |
c = 16.5584 (16) Å | 0.31 × 0.08 × 0.07 mm |
β = 132.014 (2)° |
Bruker APEXII CCD diffractometer | 2864 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2112 reflections with I > 2σ(I) |
Tmin = 0.795, Tmax = 0.947 | Rint = 0.036 |
11486 measured reflections |
R[F2 > 2σ(F2)] = 0.055 | 37 restraints |
wR(F2) = 0.196 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.09 | Δρmax = 0.56 e Å−3 |
2864 reflections | Δρmin = −0.65 e Å−3 |
168 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 | 0.21969 (4) | 0.08206 (8) | 0.26474 (6) | 0.0437 (3) | |
O1 | 0.16507 (13) | 0.0323 (3) | 0.15598 (16) | 0.0610 (6) | |
O2 | 0.22892 (12) | 0.2337 (2) | 0.28664 (18) | 0.0567 (6) | |
N1 | 0.29812 (14) | 0.0196 (3) | 0.3083 (2) | 0.0492 (6) | |
H1n | 0.291 (2) | −0.063 (2) | 0.280 (3) | 0.059* | |
C1 | 0.20212 (16) | 0.0052 (3) | 0.3427 (2) | 0.0448 (7) | |
C2 | 0.2297 (2) | 0.0696 (4) | 0.4375 (3) | 0.0690 (10) | |
H2 | 0.2586 | 0.1526 | 0.4613 | 0.083* | |
C3 | 0.2149 (3) | 0.0117 (5) | 0.4979 (3) | 0.0875 (13) | |
H3 | 0.2337 | 0.0557 | 0.5625 | 0.105* | |
C4 | 0.1730 (3) | −0.1089 (5) | 0.4635 (4) | 0.0935 (14) | |
H4 | 0.1643 | −0.1497 | 0.5054 | 0.112* | |
C5 | 0.1437 (4) | −0.1704 (6) | 0.3671 (5) | 0.1114 (18) | |
H5 | 0.1129 | −0.2507 | 0.3418 | 0.134* | |
C6 | 0.1591 (3) | −0.1147 (5) | 0.3065 (4) | 0.0851 (13) | |
H6 | 0.1403 | −0.1588 | 0.2420 | 0.102* | |
C7 | 0.36691 (17) | 0.0393 (3) | 0.4183 (2) | 0.0470 (7) | |
C8 | 0.39442 (19) | 0.1756 (3) | 0.4603 (3) | 0.0537 (8) | |
H8 | 0.3673 | 0.2562 | 0.4178 | 0.064* | |
C9 | 0.46209 (19) | 0.1938 (4) | 0.5652 (3) | 0.0607 (9) | |
C10 | 0.50388 (19) | 0.0737 (4) | 0.6287 (3) | 0.0638 (10) | |
C11 | 0.4750 (2) | −0.0623 (4) | 0.5834 (3) | 0.0683 (10) | |
H11 | 0.5022 | −0.1436 | 0.6246 | 0.082* | |
C12 | 0.4080 (2) | −0.0805 (4) | 0.4804 (3) | 0.0581 (8) | |
H12 | 0.3902 | −0.1728 | 0.4523 | 0.070* | |
C13 | 0.4905 (3) | 0.3462 (5) | 0.6065 (4) | 0.1030 (16) | |
H13A | 0.5075 | 0.3559 | 0.6778 | 0.154* | |
H13B | 0.4511 | 0.4139 | 0.5581 | 0.154* | |
H13C | 0.5309 | 0.3653 | 0.6096 | 0.154* | |
C14 | 0.5778 (2) | 0.0900 (6) | 0.7430 (3) | 0.0921 (15) | |
H14A | 0.6053 | 0.1672 | 0.7454 | 0.138* | |
H14B | 0.6054 | 0.0017 | 0.7654 | 0.138* | |
H14C | 0.5697 | 0.1115 | 0.7912 | 0.138* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0524 (5) | 0.0421 (5) | 0.0424 (4) | 0.0023 (3) | 0.0340 (4) | 0.0028 (3) |
O1 | 0.0623 (14) | 0.0769 (16) | 0.0388 (12) | −0.0017 (12) | 0.0317 (11) | −0.0011 (10) |
O2 | 0.0678 (14) | 0.0410 (12) | 0.0680 (14) | 0.0076 (10) | 0.0483 (13) | 0.0091 (10) |
N1 | 0.0572 (15) | 0.0462 (14) | 0.0533 (15) | −0.0004 (12) | 0.0407 (13) | −0.0075 (12) |
C1 | 0.0560 (16) | 0.0416 (15) | 0.0466 (15) | −0.0004 (12) | 0.0384 (14) | −0.0012 (12) |
C2 | 0.089 (2) | 0.072 (2) | 0.0622 (19) | −0.0237 (18) | 0.0574 (19) | −0.0184 (16) |
C3 | 0.118 (3) | 0.102 (3) | 0.071 (2) | −0.024 (2) | 0.075 (2) | −0.019 (2) |
C4 | 0.132 (3) | 0.098 (3) | 0.091 (3) | −0.025 (3) | 0.092 (3) | −0.005 (2) |
C5 | 0.155 (4) | 0.101 (3) | 0.118 (3) | −0.054 (3) | 0.108 (3) | −0.021 (2) |
C6 | 0.121 (3) | 0.079 (2) | 0.084 (2) | −0.038 (2) | 0.080 (2) | −0.026 (2) |
C7 | 0.0513 (16) | 0.0521 (17) | 0.0538 (17) | 0.0004 (13) | 0.0418 (15) | 0.0004 (14) |
C8 | 0.0551 (18) | 0.0536 (19) | 0.0588 (19) | 0.0010 (14) | 0.0408 (17) | −0.0001 (14) |
C9 | 0.0553 (19) | 0.071 (2) | 0.064 (2) | −0.0095 (17) | 0.0436 (18) | −0.0090 (18) |
C10 | 0.0481 (19) | 0.094 (3) | 0.058 (2) | −0.0018 (18) | 0.0389 (17) | 0.0061 (19) |
C11 | 0.062 (2) | 0.075 (3) | 0.074 (2) | 0.0142 (18) | 0.048 (2) | 0.0238 (19) |
C12 | 0.061 (2) | 0.0554 (19) | 0.067 (2) | 0.0035 (15) | 0.0462 (18) | 0.0068 (16) |
C13 | 0.078 (3) | 0.098 (4) | 0.091 (3) | −0.020 (3) | 0.039 (3) | −0.022 (3) |
C14 | 0.058 (2) | 0.142 (4) | 0.068 (3) | −0.008 (2) | 0.038 (2) | 0.011 (3) |
S1—O1 | 1.420 (2) | C7—C8 | 1.379 (4) |
S1—O2 | 1.430 (2) | C7—C12 | 1.381 (4) |
S1—N1 | 1.621 (3) | C8—C9 | 1.386 (5) |
S1—C1 | 1.758 (3) | C8—H8 | 0.9300 |
N1—C7 | 1.436 (4) | C9—C10 | 1.394 (5) |
N1—H1n | 0.85 (3) | C9—C13 | 1.518 (6) |
C1—C6 | 1.356 (5) | C10—C11 | 1.392 (5) |
C1—C2 | 1.364 (4) | C10—C14 | 1.508 (5) |
C2—C3 | 1.379 (5) | C11—C12 | 1.365 (5) |
C2—H2 | 0.9300 | C11—H11 | 0.9300 |
C3—C4 | 1.351 (6) | C12—H12 | 0.9300 |
C3—H3 | 0.9300 | C13—H13A | 0.9600 |
C4—C5 | 1.363 (6) | C13—H13B | 0.9600 |
C4—H4 | 0.9300 | C13—H13C | 0.9600 |
C5—C6 | 1.384 (6) | C14—H14A | 0.9600 |
C5—H5 | 0.9300 | C14—H14B | 0.9600 |
C6—H6 | 0.9300 | C14—H14C | 0.9600 |
O1—S1—O2 | 119.67 (15) | C12—C7—N1 | 119.2 (3) |
O1—S1—N1 | 105.54 (14) | C7—C8—C9 | 120.7 (3) |
O2—S1—N1 | 107.46 (13) | C7—C8—H8 | 119.7 |
O1—S1—C1 | 108.80 (14) | C9—C8—H8 | 119.7 |
O2—S1—C1 | 106.57 (13) | C8—C9—C10 | 120.1 (3) |
N1—S1—C1 | 108.39 (14) | C8—C9—C13 | 118.5 (4) |
C7—N1—S1 | 122.54 (19) | C10—C9—C13 | 121.4 (4) |
C7—N1—H1N | 117 (2) | C11—C10—C9 | 117.8 (3) |
S1—N1—H1N | 109 (2) | C11—C10—C14 | 120.9 (4) |
C6—C1—C2 | 120.5 (3) | C9—C10—C14 | 121.3 (4) |
C6—C1—S1 | 119.9 (2) | C12—C11—C10 | 122.2 (3) |
C2—C1—S1 | 119.6 (2) | C12—C11—H11 | 118.9 |
C1—C2—C3 | 120.0 (4) | C10—C11—H11 | 118.9 |
C1—C2—H2 | 120.0 | C11—C12—C7 | 119.5 (3) |
C3—C2—H2 | 120.0 | C11—C12—H12 | 120.2 |
C4—C3—C2 | 120.1 (4) | C7—C12—H12 | 120.2 |
C4—C3—H3 | 120.0 | C9—C13—H13A | 109.5 |
C2—C3—H3 | 120.0 | C9—C13—H13B | 109.5 |
C3—C4—C5 | 119.7 (4) | H13A—C13—H13B | 109.5 |
C3—C4—H4 | 120.1 | C9—C13—H13C | 109.5 |
C5—C4—H4 | 120.1 | H13A—C13—H13C | 109.5 |
C4—C5—C6 | 120.7 (4) | H13B—C13—H13C | 109.5 |
C4—C5—H5 | 119.7 | C10—C14—H14A | 109.5 |
C6—C5—H5 | 119.7 | C10—C14—H14B | 109.5 |
C1—C6—C5 | 119.0 (4) | H14A—C14—H14B | 109.5 |
C1—C6—H6 | 120.5 | C10—C14—H14C | 109.5 |
C5—C6—H6 | 120.5 | H14A—C14—H14C | 109.5 |
C8—C7—C12 | 119.7 (3) | H14B—C14—H14C | 109.5 |
C8—C7—N1 | 121.0 (3) | ||
O1—S1—N1—C7 | −176.1 (2) | C4—C5—C6—C1 | −2.1 (9) |
O2—S1—N1—C7 | 55.1 (3) | S1—N1—C7—C8 | −60.8 (4) |
C1—S1—N1—C7 | −59.7 (3) | S1—N1—C7—C12 | 123.0 (3) |
O1—S1—C1—C6 | 19.3 (4) | C12—C7—C8—C9 | −1.6 (4) |
O2—S1—C1—C6 | 149.6 (3) | N1—C7—C8—C9 | −177.7 (3) |
N1—S1—C1—C6 | −95.0 (4) | C7—C8—C9—C10 | 1.4 (5) |
O1—S1—C1—C2 | −158.3 (3) | C7—C8—C9—C13 | 178.7 (3) |
O2—S1—C1—C2 | −28.0 (3) | C8—C9—C10—C11 | −0.5 (5) |
N1—S1—C1—C2 | 87.4 (3) | C13—C9—C10—C11 | −177.8 (4) |
C6—C1—C2—C3 | 0.9 (6) | C8—C9—C10—C14 | 179.9 (3) |
S1—C1—C2—C3 | 178.6 (3) | C13—C9—C10—C14 | 2.6 (5) |
C1—C2—C3—C4 | 0.1 (7) | C9—C10—C11—C12 | −0.2 (5) |
C2—C3—C4—C5 | −2.1 (9) | C14—C10—C11—C12 | 179.4 (3) |
C3—C4—C5—C6 | 3.1 (10) | C10—C11—C12—C7 | −0.1 (5) |
C2—C1—C6—C5 | 0.1 (7) | C8—C7—C12—C11 | 0.9 (5) |
S1—C1—C6—C5 | −177.6 (4) | N1—C7—C12—C11 | 177.1 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1n···O2i | 0.85 (3) | 2.07 (2) | 2.921 (3) | 177 (5) |
Symmetry code: (i) −x+1/2, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H15NO2S |
Mr | 261.33 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 293 |
a, b, c (Å) | 24.2129 (12), 9.2616 (5), 16.5584 (16) |
β (°) | 132.014 (2) |
V (Å3) | 2758.9 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.23 |
Crystal size (mm) | 0.31 × 0.08 × 0.07 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.795, 0.947 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11486, 2864, 2112 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.628 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.055, 0.196, 1.09 |
No. of reflections | 2864 |
No. of parameters | 168 |
No. of restraints | 37 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.56, −0.65 |
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 |
N1—H1n···O2i | 0.85 (3) | 2.07 (2) | 2.921 (3) | 177 (5) |
Symmetry code: (i) −x+1/2, y−1/2, −z+1/2. |
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.
References
Brandenburg, K. (2006). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Bruker (2007). APEX2 and SAINT. Bruker AXS Inc., Madison Wisconsin, USA. Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Gowda, B. T., Foro, S., Nirmala, P. G., Terao, H. & Fuess, H. (2009). Acta Cryst. E65, o877. Web of Science CSD CrossRef IUCr Journals Google Scholar
Khan, I. U., Mariam, I., Zia-ur-Rehman, M., Arif Sajjad, M. & Sharif, S. (2010). Acta Cryst. E66, o1088. Web of Science CSD CrossRef IUCr Journals Google Scholar
Korolkovas, A. (1988). Essentials of Medicinal Chemistry, 2nd ed., pp. 699–716. New York: Wiley. Google Scholar
Mandell, G. L. & Sande, M. A. (1992). In Goodman and Gilman, The Pharmacological Basis of Therapeutics 2, edited by A. Gilman, T. W. Rall, A. S. Nies & P. Taylor, 8th ed., pp. 1047–1057. Singapore: McGraw–Hill. Google Scholar
Sharif, S., Iqbal, H., Khan, I. U., John, P. & Tiekink, E. R. T. (2010). Acta Cryst. E66, o1288. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920–925. Web of Science CrossRef CAS IUCr Journals 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.
In continuation of on-going structural studies of sulfonamides (Khan et al., 2010; Sharif et al., 2010), of interest owing to their putative anti-microbial activity (Korolkovas, 1988; Mandell & Sande, 1992), the crystal and molecular structure of the title compound, (I), was investigated.
In (I), both sulfonamido-O atoms lie to one side of the S-bound benzene ring [the O1–S1–C1–C6 and O2–S1–C1–C2 torsion angles are 19.3 (4) and -28.0 (3) °, respectively] and are on the opposite side of this ring to the sulfonamido-N1 atom, Fig. 1. The latter is approximately perpendicular to the benzene ring [N1–S1–C1–C2 is -87.4 (3) °] with the N-bound benzene ring clearly displaced to one side of the molecule; the dihedral angle formed between the two benzene rings is 64.5 (3) °. Although not isomorphous, the overall molecular conformation found in the closely related derivative, with an S-bound tolsyl group, is almost identical (Gowda et al. 2009).
The presence of N1–H···O2 hydrogen bonding, Table 1, leads to the formation of supramolecular chains along the b axis, Fig. 2.