organic compounds
4-(5-Phenyl-3-trifluoromethyl-1H-pyrazol-1-yl)benzenesulfonamide
aChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia, bThe Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, PO Box 80203, Saudi Arabia, and cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: edward.tiekink@gmail.com
Significant twists between the aromatic rings are evident in the structure of the title compound, C16H12F3N3O2S. With reference to the pyrazole plane, the N- and C-bound benzene rings form dihedral angles of 57.12 (11) and 29.75 (11)°, respectively. The dihedral angle between the benzene rings is 52.82 (11)°. The presence of N—H⋯O(sulfonamide) and N—H⋯N(pyrazole) hydrogen bonds lead to supramolecular tubes along the b-axis direction. These are connected into layers via C—H⋯O interactions involving a bifurcated O atom (not involved in the N—H⋯O hydrogen bonding). Layers stack along the a-axis direction.
Related literature
For background to the biological applications of related species, see: Faidallah et al. (2007); Al-Saadi et al. (2008). For the of a related species, see: Dev et al. (1999).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Agilent, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; 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
10.1107/S1600536811033435/hg5083sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811033435/hg5083Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811033435/hg5083Isup3.cml
A solution of 4,4,4-trifluoro-1-phenyl-1,3-butanedione (2.01 g, 10 mmol) in ethanol (50 ml) was refluxed with 4-hydrazinobenzenesulfonamide hydrochloride (2.2 g, 10 mmol) for 4 h, cooled and diluted with water. The precipitated crude product was filtered and recrystallized from ethanol as colourless crystals; M.pt. 431–433 K.
Carbon-bound H-atoms were placed in calculated positions [C—H 0.95 Å, Uiso(H) 1.2Ueq(C)] and were included in the
in the riding model approximation. The amino-H atoms were located in a difference Fourier map, and subsequently refined freely.Data collection: CrysAlis PRO (Agilent, 2010); cell
CrysAlis PRO (Agilent, 2010); data reduction: CrysAlis PRO (Agilent, 2010); 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).C16H12F3N3O2S | F(000) = 752 |
Mr = 367.35 | Dx = 1.534 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3338 reflections |
a = 16.2430 (7) Å | θ = 2.5–29.3° |
b = 4.9461 (2) Å | µ = 0.25 mm−1 |
c = 21.2383 (8) Å | T = 100 K |
β = 111.231 (5)° | Prism, colourless |
V = 1590.47 (11) Å3 | 0.40 × 0.10 × 0.05 mm |
Z = 4 |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3560 independent reflections |
Radiation source: SuperNova (Mo) X-ray Source | 2876 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.031 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 27.5°, θmin = 2.7° |
ω scans | h = −16→21 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | k = −6→4 |
Tmin = 0.735, Tmax = 1.000 | l = −27→27 |
7901 measured reflections |
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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.113 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0453P)2 + 1.0489P] where P = (Fo2 + 2Fc2)/3 |
3560 reflections | (Δ/σ)max < 0.001 |
234 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.49 e Å−3 |
C16H12F3N3O2S | V = 1590.47 (11) Å3 |
Mr = 367.35 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 16.2430 (7) Å | µ = 0.25 mm−1 |
b = 4.9461 (2) Å | T = 100 K |
c = 21.2383 (8) Å | 0.40 × 0.10 × 0.05 mm |
β = 111.231 (5)° |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3560 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | 2876 reflections with I > 2σ(I) |
Tmin = 0.735, Tmax = 1.000 | Rint = 0.031 |
7901 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.113 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | Δρmax = 0.34 e Å−3 |
3560 reflections | Δρmin = −0.49 e Å−3 |
234 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'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 > 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 | 0.38822 (3) | 0.81404 (10) | 0.32626 (2) | 0.01565 (14) | |
F1 | 0.90203 (11) | 0.1680 (3) | 0.69086 (6) | 0.0425 (4) | |
F2 | 0.94604 (9) | −0.1249 (3) | 0.63638 (7) | 0.0399 (4) | |
F3 | 0.81737 (9) | −0.1604 (3) | 0.64239 (8) | 0.0432 (4) | |
O1 | 0.37971 (9) | 1.0737 (3) | 0.35369 (8) | 0.0244 (4) | |
O2 | 0.38267 (9) | 0.7931 (3) | 0.25777 (7) | 0.0231 (3) | |
N1 | 0.74390 (11) | 0.3994 (3) | 0.49401 (8) | 0.0156 (4) | |
N2 | 0.75444 (11) | 0.2540 (4) | 0.55074 (8) | 0.0177 (4) | |
N3 | 0.31318 (11) | 0.6258 (4) | 0.33572 (9) | 0.0164 (4) | |
H1 | 0.3186 (17) | 0.461 (6) | 0.3280 (12) | 0.030 (7)* | |
H2 | 0.3050 (15) | 0.658 (5) | 0.3732 (12) | 0.020 (6)* | |
C1 | 0.87573 (14) | 0.0151 (5) | 0.63544 (11) | 0.0243 (5) | |
C2 | 0.83889 (13) | 0.1780 (4) | 0.57227 (10) | 0.0179 (4) | |
C3 | 0.88288 (13) | 0.2711 (4) | 0.53112 (10) | 0.0183 (4) | |
H3 | 0.9429 | 0.2415 | 0.5367 | 0.022* | |
C4 | 0.82048 (13) | 0.4154 (4) | 0.48055 (10) | 0.0163 (4) | |
C5 | 0.82969 (13) | 0.5586 (4) | 0.42273 (9) | 0.0159 (4) | |
C6 | 0.89089 (13) | 0.4628 (4) | 0.39583 (10) | 0.0195 (4) | |
H6 | 0.9266 | 0.3111 | 0.4160 | 0.023* | |
C7 | 0.90027 (14) | 0.5854 (5) | 0.34033 (10) | 0.0225 (5) | |
H7 | 0.9422 | 0.5181 | 0.3226 | 0.027* | |
C8 | 0.84853 (14) | 0.8061 (4) | 0.31056 (10) | 0.0224 (5) | |
H8 | 0.8542 | 0.8885 | 0.2719 | 0.027* | |
C9 | 0.78859 (14) | 0.9066 (4) | 0.33714 (11) | 0.0229 (5) | |
H9 | 0.7532 | 1.0587 | 0.3168 | 0.027* | |
C10 | 0.77983 (14) | 0.7863 (4) | 0.39346 (10) | 0.0201 (4) | |
H10 | 0.7397 | 0.8595 | 0.4122 | 0.024* | |
C11 | 0.65665 (12) | 0.4914 (4) | 0.45432 (9) | 0.0151 (4) | |
C12 | 0.61316 (15) | 0.6612 (5) | 0.48304 (11) | 0.0324 (6) | |
H12 | 0.6395 | 0.7133 | 0.5291 | 0.039* | |
C13 | 0.52997 (16) | 0.7552 (6) | 0.44350 (12) | 0.0372 (7) | |
H13 | 0.4985 | 0.8704 | 0.4627 | 0.045* | |
C14 | 0.49304 (12) | 0.6820 (4) | 0.37671 (10) | 0.0157 (4) | |
C15 | 0.53662 (14) | 0.5093 (4) | 0.34853 (10) | 0.0207 (5) | |
H15 | 0.5103 | 0.4580 | 0.3024 | 0.025* | |
C16 | 0.61907 (14) | 0.4107 (4) | 0.38786 (10) | 0.0209 (4) | |
H16 | 0.6494 | 0.2889 | 0.3692 | 0.025* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0135 (2) | 0.0142 (3) | 0.0179 (2) | 0.00119 (19) | 0.00409 (19) | 0.00217 (18) |
F1 | 0.0559 (10) | 0.0483 (9) | 0.0155 (6) | 0.0101 (8) | 0.0035 (6) | 0.0034 (6) |
F2 | 0.0336 (8) | 0.0494 (9) | 0.0404 (8) | 0.0254 (7) | 0.0179 (7) | 0.0220 (7) |
F3 | 0.0308 (8) | 0.0513 (10) | 0.0446 (9) | −0.0026 (7) | 0.0104 (7) | 0.0283 (7) |
O1 | 0.0196 (8) | 0.0133 (7) | 0.0360 (9) | 0.0023 (6) | 0.0051 (7) | −0.0020 (6) |
O2 | 0.0185 (7) | 0.0320 (9) | 0.0189 (7) | 0.0016 (7) | 0.0068 (6) | 0.0080 (6) |
N1 | 0.0152 (8) | 0.0185 (9) | 0.0130 (8) | 0.0028 (7) | 0.0050 (6) | 0.0008 (7) |
N2 | 0.0190 (9) | 0.0194 (9) | 0.0143 (8) | 0.0009 (7) | 0.0056 (7) | 0.0017 (7) |
N3 | 0.0170 (9) | 0.0144 (9) | 0.0187 (9) | 0.0009 (7) | 0.0075 (7) | −0.0001 (7) |
C1 | 0.0202 (11) | 0.0282 (12) | 0.0247 (11) | 0.0059 (9) | 0.0083 (9) | 0.0065 (9) |
C2 | 0.0174 (10) | 0.0186 (10) | 0.0167 (9) | 0.0034 (8) | 0.0048 (8) | 0.0006 (8) |
C3 | 0.0147 (10) | 0.0214 (10) | 0.0187 (10) | 0.0024 (8) | 0.0061 (8) | −0.0001 (8) |
C4 | 0.0136 (9) | 0.0174 (10) | 0.0175 (9) | 0.0005 (8) | 0.0053 (8) | −0.0026 (8) |
C5 | 0.0137 (9) | 0.0180 (10) | 0.0145 (9) | −0.0032 (8) | 0.0034 (7) | −0.0013 (8) |
C6 | 0.0150 (10) | 0.0226 (11) | 0.0195 (10) | 0.0024 (8) | 0.0043 (8) | 0.0015 (8) |
C7 | 0.0224 (11) | 0.0276 (12) | 0.0201 (10) | 0.0000 (9) | 0.0110 (9) | −0.0006 (9) |
C8 | 0.0234 (11) | 0.0266 (11) | 0.0173 (10) | −0.0043 (9) | 0.0073 (9) | 0.0025 (9) |
C9 | 0.0213 (11) | 0.0205 (11) | 0.0243 (11) | 0.0018 (9) | 0.0052 (9) | 0.0048 (9) |
C10 | 0.0191 (10) | 0.0199 (11) | 0.0231 (10) | 0.0010 (9) | 0.0099 (9) | −0.0015 (9) |
C11 | 0.0129 (9) | 0.0166 (10) | 0.0152 (9) | 0.0010 (8) | 0.0043 (8) | 0.0025 (8) |
C12 | 0.0244 (12) | 0.0470 (15) | 0.0183 (10) | 0.0133 (11) | −0.0013 (9) | −0.0148 (10) |
C13 | 0.0272 (13) | 0.0526 (16) | 0.0243 (12) | 0.0208 (12) | 0.0003 (10) | −0.0182 (11) |
C14 | 0.0134 (9) | 0.0151 (10) | 0.0176 (9) | 0.0004 (8) | 0.0046 (8) | 0.0013 (8) |
C15 | 0.0191 (10) | 0.0263 (11) | 0.0151 (9) | 0.0022 (9) | 0.0045 (8) | −0.0036 (9) |
C16 | 0.0185 (10) | 0.0249 (11) | 0.0194 (10) | 0.0065 (9) | 0.0070 (8) | −0.0034 (9) |
S1—O2 | 1.4283 (15) | C6—C7 | 1.382 (3) |
S1—O1 | 1.4373 (15) | C6—H6 | 0.9500 |
S1—N3 | 1.6033 (18) | C7—C8 | 1.383 (3) |
S1—C14 | 1.7754 (19) | C7—H7 | 0.9500 |
F1—C1 | 1.332 (3) | C8—C9 | 1.383 (3) |
F2—C1 | 1.330 (2) | C8—H8 | 0.9500 |
F3—C1 | 1.332 (3) | C9—C10 | 1.389 (3) |
N1—N2 | 1.359 (2) | C9—H9 | 0.9500 |
N1—C4 | 1.376 (3) | C10—H10 | 0.9500 |
N1—C11 | 1.436 (2) | C11—C12 | 1.374 (3) |
N2—C2 | 1.333 (3) | C11—C16 | 1.378 (3) |
N3—H1 | 0.84 (3) | C12—C13 | 1.387 (3) |
N3—H2 | 0.87 (2) | C12—H12 | 0.9500 |
C1—C2 | 1.492 (3) | C13—C14 | 1.374 (3) |
C2—C3 | 1.392 (3) | C13—H13 | 0.9500 |
C3—C4 | 1.379 (3) | C14—C15 | 1.377 (3) |
C3—H3 | 0.9500 | C15—C16 | 1.385 (3) |
C4—C5 | 1.471 (3) | C15—H15 | 0.9500 |
C5—C6 | 1.397 (3) | C16—H16 | 0.9500 |
C5—C10 | 1.395 (3) | ||
O2—S1—O1 | 119.85 (9) | C7—C6—H6 | 119.5 |
O2—S1—N3 | 108.36 (9) | C5—C6—H6 | 119.5 |
O1—S1—N3 | 106.20 (10) | C6—C7—C8 | 120.0 (2) |
O2—S1—C14 | 106.32 (9) | C6—C7—H7 | 120.0 |
O1—S1—C14 | 107.22 (9) | C8—C7—H7 | 120.0 |
N3—S1—C14 | 108.50 (9) | C9—C8—C7 | 119.9 (2) |
N2—N1—C4 | 112.43 (16) | C9—C8—H8 | 120.1 |
N2—N1—C11 | 117.95 (15) | C7—C8—H8 | 120.1 |
C4—N1—C11 | 129.36 (16) | C8—C9—C10 | 120.3 (2) |
C2—N2—N1 | 103.70 (16) | C8—C9—H9 | 119.9 |
S1—N3—H1 | 113.6 (18) | C10—C9—H9 | 119.9 |
S1—N3—H2 | 112.6 (16) | C9—C10—C5 | 120.4 (2) |
H1—N3—H2 | 115 (2) | C9—C10—H10 | 119.8 |
F2—C1—F1 | 106.47 (18) | C5—C10—H10 | 119.8 |
F2—C1—F3 | 107.48 (19) | C12—C11—C16 | 121.55 (19) |
F1—C1—F3 | 106.57 (18) | C12—C11—N1 | 119.34 (17) |
F2—C1—C2 | 110.94 (18) | C16—C11—N1 | 119.11 (18) |
F1—C1—C2 | 112.57 (19) | C11—C12—C13 | 118.7 (2) |
F3—C1—C2 | 112.45 (18) | C11—C12—H12 | 120.6 |
N2—C2—C3 | 112.93 (18) | C13—C12—H12 | 120.6 |
N2—C2—C1 | 119.24 (18) | C14—C13—C12 | 120.1 (2) |
C3—C2—C1 | 127.82 (19) | C14—C13—H13 | 119.9 |
C4—C3—C2 | 105.10 (18) | C12—C13—H13 | 119.9 |
C4—C3—H3 | 127.5 | C13—C14—C15 | 120.76 (19) |
C2—C3—H3 | 127.5 | C13—C14—S1 | 119.41 (16) |
N1—C4—C3 | 105.85 (17) | C15—C14—S1 | 119.83 (15) |
N1—C4—C5 | 125.03 (17) | C14—C15—C16 | 119.55 (19) |
C3—C4—C5 | 129.12 (18) | C14—C15—H15 | 120.2 |
C6—C5—C10 | 118.42 (19) | C16—C15—H15 | 120.2 |
C6—C5—C4 | 118.74 (18) | C11—C16—C15 | 119.24 (19) |
C10—C5—C4 | 122.85 (18) | C11—C16—H16 | 120.4 |
C7—C6—C5 | 121.0 (2) | C15—C16—H16 | 120.4 |
C4—N1—N2—C2 | −0.4 (2) | C6—C7—C8—C9 | 1.1 (3) |
C11—N1—N2—C2 | 174.33 (17) | C7—C8—C9—C10 | −0.3 (3) |
N1—N2—C2—C3 | 0.2 (2) | C8—C9—C10—C5 | −1.7 (3) |
N1—N2—C2—C1 | 179.01 (18) | C6—C5—C10—C9 | 2.7 (3) |
F2—C1—C2—N2 | 156.75 (19) | C4—C5—C10—C9 | −177.26 (19) |
F1—C1—C2—N2 | −84.1 (2) | N2—N1—C11—C12 | 60.5 (3) |
F3—C1—C2—N2 | 36.3 (3) | C4—N1—C11—C12 | −125.9 (2) |
F2—C1—C2—C3 | −24.6 (3) | N2—N1—C11—C16 | −120.6 (2) |
F1—C1—C2—C3 | 94.6 (3) | C4—N1—C11—C16 | 53.0 (3) |
F3—C1—C2—C3 | −145.0 (2) | C16—C11—C12—C13 | −0.8 (4) |
N2—C2—C3—C4 | 0.1 (2) | N1—C11—C12—C13 | 178.1 (2) |
C1—C2—C3—C4 | −178.6 (2) | C11—C12—C13—C14 | −1.0 (4) |
N2—N1—C4—C3 | 0.4 (2) | C12—C13—C14—C15 | 1.8 (4) |
C11—N1—C4—C3 | −173.52 (19) | C12—C13—C14—S1 | −177.8 (2) |
N2—N1—C4—C5 | 179.93 (17) | O2—S1—C14—C13 | 158.1 (2) |
C11—N1—C4—C5 | 6.0 (3) | O1—S1—C14—C13 | 28.8 (2) |
C2—C3—C4—N1 | −0.3 (2) | N3—S1—C14—C13 | −85.5 (2) |
C2—C3—C4—C5 | −179.8 (2) | O2—S1—C14—C15 | −21.5 (2) |
N1—C4—C5—C6 | −149.8 (2) | O1—S1—C14—C15 | −150.81 (17) |
C3—C4—C5—C6 | 29.6 (3) | N3—S1—C14—C15 | 94.88 (19) |
N1—C4—C5—C10 | 30.2 (3) | C13—C14—C15—C16 | −0.7 (3) |
C3—C4—C5—C10 | −150.4 (2) | S1—C14—C15—C16 | 178.87 (16) |
C10—C5—C6—C7 | −1.8 (3) | C12—C11—C16—C15 | 1.9 (3) |
C4—C5—C6—C7 | 178.14 (19) | N1—C11—C16—C15 | −176.98 (18) |
C5—C6—C7—C8 | −0.1 (3) | C14—C15—C16—C11 | −1.1 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H1···O1i | 0.84 (3) | 2.14 (3) | 2.911 (2) | 153 (2) |
N3—H2···N2ii | 0.87 (2) | 2.21 (3) | 3.049 (3) | 164 (2) |
C9—H9···O2iii | 0.95 | 2.49 | 3.376 (3) | 155 |
C16—H16···O2iv | 0.95 | 2.55 | 3.137 (2) | 120 |
Symmetry codes: (i) x, y−1, z; (ii) −x+1, −y+1, −z+1; (iii) −x+1, y+1/2, −z+1/2; (iv) −x+1, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C16H12F3N3O2S |
Mr | 367.35 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 16.2430 (7), 4.9461 (2), 21.2383 (8) |
β (°) | 111.231 (5) |
V (Å3) | 1590.47 (11) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.25 |
Crystal size (mm) | 0.40 × 0.10 × 0.05 |
Data collection | |
Diffractometer | Agilent SuperNova Dual diffractometer with an Atlas detector |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2010) |
Tmin, Tmax | 0.735, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7901, 3560, 2876 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.113, 1.06 |
No. of reflections | 3560 |
No. of parameters | 234 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.34, −0.49 |
Computer programs: CrysAlis PRO (Agilent, 2010), 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 |
N3—H1···O1i | 0.84 (3) | 2.14 (3) | 2.911 (2) | 153 (2) |
N3—H2···N2ii | 0.87 (2) | 2.21 (3) | 3.049 (3) | 164 (2) |
C9—H9···O2iii | 0.95 | 2.49 | 3.376 (3) | 155 |
C16—H16···O2iv | 0.95 | 2.55 | 3.137 (2) | 120 |
Symmetry codes: (i) x, y−1, z; (ii) −x+1, −y+1, −z+1; (iii) −x+1, y+1/2, −z+1/2; (iv) −x+1, y−1/2, −z+1/2. |
Footnotes
‡Additional correspondence author, e-mail: aasiri2@kau.edu.sa.
Acknowledgements
The authors thank King Abdulaziz University and the University of Malaya for supporting this study.
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The crystallographic study of the title compound, (I), which is related to the anti-inflammatory drug, Celecoxib (Dev et al., 1999), was motivated by the recent reports of the biological activities exhibited by related pyrazole compounds (Faidallah et al., 2007; Al-Saadi et al., 2008).
Significant twists are evident in the molecule of (I), Fig. 1. With reference to the pyrazole (N1,N2,C2—C4) plane (r.m.s. deviation = 0,003 Å), the N-bound benzene ring (C11–C16) forms a dihedral angle of 57.12 (11) ° whereas the C-bound benzene ring (C5–C10) forms a dihedral angle of 29.75 (11) °; the dihedral angle formed between the two benzene rings is 52.82 (11) °. The orientations of the benzene rings in (I) differ from those in Celecoxib (Dev et al., 1999), the 4-methylphenyl derivative, with the dihedral angles formed between the N– and C-bound benzene rings and the pyrazole plane being 86.00 (12) and 15.25 (13) °, respectively.
Supramolecular tubes along the b axis feature in the crystal packing, Fig. 2. These are stabilized by amino-H hydrogen bonds to the pyrazole-N and to one of the sulfonamide-O atoms, Table 1. Tubes are linked into layers in the bc plane by C—H···O interactions whereby the sulfonamide-O2 atom is bifurcated, Table 1 and Fig. 3. Layers stack along the a axis, Fig. 4.