organic compounds
H-imidazol-1-yl)propan-2-yloxy]carbonyl}benzoic acid
of 2-{[1-(2-methyl-5-nitro-1aDepartment of Chemistry, Faculty of Science, Federal Urdu University of Arts, Science and Technology, Gulshan-e-Iqbal, Karachi 75300, Pakistan, bAtta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor D. E., Malaysia, cFaculty of Pharmacy, Universiti Tecknologi MARA, Puncak Alam, 42300 Selangor, Malaysia, and dFaculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Malaysia
*Correspondence e-mail: humera@salam.uitm.edu.my
In the title compound, C15H15N3O6, the dihedral angle between the planes of the benzene and imidazole rings is 34.93 (10)°. An intramolecular C—H⋯O hydrogen bond is observed. In the crystal, O—H⋯N hydrogen bonds link the molecules into chains parallel to the c axis.
Keywords: crystal structure; nitroimidazoles; O—H⋯N hydrogen bonds; pharmaceuticals.
CCDC reference: 1031694
1. Related literature
For the applications and biological activities of nitroimidazole and its derivatives, see: Maeda et al. (1953); Larina & Lopyrev (2009); Zhang et al. (2014); Gillis & Wiseman (1996). For the of related compounds, see: Xiao et al. (2008); Shahid et al. (2014).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick 2008); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008); molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 2009).
Supporting information
CCDC reference: 1031694
10.1107/S1600536814023927/rz5138sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814023927/rz5138Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814023927/rz5138Isup3.cml
For the synthesis of title compound, 10.8 mmol of secnidazole (2 g) and 10.8 mmol of phthalic anhydride (1.6 g) were dissolved in a mixture of acetone (15 ml) and pyridine (1 ml). The reaction mixture was allowed to reflux for 12 h. After completion of the reaction, the solvent was evaporated under vacuum and the crude product was washed with little amounts of pure water, methanol and toluene to get colourless crystals in 63% yield. M. p.: 461-463 K. 1H NMR (500 MHz, DMSO-d6): δ 8.044 (s, 1 H, imidazole H), 7.782–7.756 (m, 1 H, Ar H), 7.639–7.595 (m, 2 H, ArH), 7.295–7.263 (m, 1 H, Ar H), 5.397–5.334 (m, 1 H, CH), 4.650–4.421 (m, 2 H, CH2), 2.320 (s, 3 H, CH3), 1.392–1.379 (d, J=6.5 Hz, 3 H, CH3). 13C NMR (125 MHz, DMSO-d6): δ 167.93 (C—O), 167.60 (C—O), 152.08 (C—N), 139.02 (C—NO2), 133.65 (imidazole CH), 132.81, 132.03, 131.72, 131.52, 129.57, 127.83 (aromatic C), 70.70 (O—CH), 49.85 (N—CH2), 17.09 and 14.40 (CH3).
The hydroxyl H atom was located in a difference Fourier map and refined freely. All other H atoms were placed in calculated positions and refined using a riding model approximation, with C—H = 0.93–0.98 Å and with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(C) for methyl H atoms.
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXTL (Sheldrick 2008); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008), PARST (Nardelli, 1995) and PLATON (Spek, 2009).Fig. 1. The molecular structure of the title compound with displacement ellipsoids drawn at 50% probability level. Fig. 2. Crystal packing of the title compound viewed down the b axis. Only hydrogen atoms involved in O—H···N hydrogen bonds (dashed lines) are shown. |
C15H15N3O6 | Dx = 1.439 Mg m−3 |
Mr = 333.30 | Melting point = 461–463 K |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 11.189 (3) Å | Cell parameters from 9799 reflections |
b = 6.9489 (17) Å | θ = 3.1–28.3° |
c = 19.979 (5) Å | µ = 0.11 mm−1 |
β = 98.056 (10)° | T = 296 K |
V = 1538.0 (6) Å3 | Block, colourless |
Z = 4 | 0.50 × 0.50 × 0.38 mm |
F(000) = 696 |
Bruker SMART APEX CCD area-detector diffractometer | 2865 independent reflections |
Radiation source: fine-focus sealed tube | 2515 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.082 |
ϕ and ω scans | θmax = 25.5°, θmin = 3.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −13→13 |
Tmin = 0.946, Tmax = 0.958 | k = −8→8 |
20047 measured reflections | l = −24→24 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: mixed |
R[F2 > 2σ(F2)] = 0.047 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.119 | w = 1/[σ2(Fo2) + (0.0414P)2 + 0.8462P] where P = (Fo2 + 2Fc2)/3 |
S = 1.07 | (Δ/σ)max < 0.001 |
2865 reflections | Δρmax = 0.31 e Å−3 |
222 parameters | Δρmin = −0.22 e Å−3 |
0 restraints | Extinction correction: SHELXL2013 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0086 (17) |
C15H15N3O6 | V = 1538.0 (6) Å3 |
Mr = 333.30 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.189 (3) Å | µ = 0.11 mm−1 |
b = 6.9489 (17) Å | T = 296 K |
c = 19.979 (5) Å | 0.50 × 0.50 × 0.38 mm |
β = 98.056 (10)° |
Bruker SMART APEX CCD area-detector diffractometer | 2865 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 2515 reflections with I > 2σ(I) |
Tmin = 0.946, Tmax = 0.958 | Rint = 0.082 |
20047 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.119 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | Δρmax = 0.31 e Å−3 |
2865 reflections | Δρmin = −0.22 e Å−3 |
222 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 on F2 for ALL reflections except those flagged by the user for potential systematic errors. Weighted R-factors wR and all goodnesses of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The observed criterion of F2 > σ(F2) is used only for calculating -R-factor-obs 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 | ||
O1 | 0.06727 (13) | 0.4222 (2) | 0.34680 (7) | 0.0516 (4) | |
O2 | 0.23305 (12) | 0.4311 (2) | 0.29641 (7) | 0.0545 (4) | |
O3 | 0.28516 (14) | 0.5351 (2) | 0.15189 (11) | 0.0768 (6) | |
O4 | 0.26149 (10) | 0.22096 (17) | 0.17394 (6) | 0.0375 (3) | |
O5 | 0.58254 (14) | 0.2723 (3) | 0.08232 (9) | 0.0720 (5) | |
O6 | 0.57286 (14) | 0.3388 (2) | −0.02413 (9) | 0.0636 (5) | |
N1 | 0.23187 (14) | 0.1045 (2) | −0.03904 (8) | 0.0441 (4) | |
N2 | 0.35718 (12) | 0.0837 (2) | 0.05685 (7) | 0.0329 (3) | |
N3 | 0.52989 (14) | 0.2715 (2) | 0.02452 (9) | 0.0469 (4) | |
C1 | 0.12441 (16) | 0.4255 (3) | 0.29324 (9) | 0.0382 (4) | |
C2 | 0.04179 (15) | 0.4222 (2) | 0.22764 (9) | 0.0346 (4) | |
C3 | −0.08314 (16) | 0.4269 (3) | 0.22600 (10) | 0.0429 (4) | |
H3A | −0.1161 | 0.4322 | 0.2662 | 0.051* | |
C4 | −0.15808 (17) | 0.4237 (3) | 0.16484 (11) | 0.0501 (5) | |
H4A | −0.2414 | 0.4246 | 0.1640 | 0.060* | |
C5 | −0.10993 (18) | 0.4191 (3) | 0.10507 (10) | 0.0514 (5) | |
H5A | −0.1608 | 0.4188 | 0.0640 | 0.062* | |
C6 | 0.01374 (17) | 0.4148 (3) | 0.10593 (10) | 0.0447 (5) | |
H6A | 0.0458 | 0.4120 | 0.0654 | 0.054* | |
C7 | 0.09033 (15) | 0.4146 (2) | 0.16701 (9) | 0.0349 (4) | |
C8 | 0.22351 (16) | 0.4028 (3) | 0.16476 (9) | 0.0386 (4) | |
C9 | 0.39058 (15) | 0.1846 (3) | 0.17704 (9) | 0.0382 (4) | |
H9A | 0.4320 | 0.3015 | 0.1653 | 0.046* | |
C10 | 0.40426 (15) | 0.0266 (3) | 0.12629 (8) | 0.0356 (4) | |
H10A | 0.4890 | −0.0063 | 0.1286 | 0.043* | |
H10B | 0.3616 | −0.0872 | 0.1382 | 0.043* | |
C11 | 0.24736 (15) | 0.0342 (3) | 0.02342 (9) | 0.0353 (4) | |
C12 | 0.33437 (17) | 0.2007 (3) | −0.04698 (9) | 0.0447 (5) | |
H12A | 0.3487 | 0.2640 | −0.0861 | 0.054* | |
C13 | 0.41269 (15) | 0.1901 (3) | 0.01123 (9) | 0.0364 (4) | |
C14 | 0.4392 (2) | 0.1213 (4) | 0.24794 (10) | 0.0598 (6) | |
H14A | 0.4299 | 0.2239 | 0.2790 | 0.090* | |
H14B | 0.5231 | 0.0895 | 0.2502 | 0.090* | |
H14C | 0.3953 | 0.0104 | 0.2597 | 0.090* | |
C15 | 0.15837 (17) | −0.0872 (3) | 0.05232 (10) | 0.0472 (5) | |
H15A | 0.0877 | −0.1030 | 0.0195 | 0.071* | |
H15B | 0.1366 | −0.0263 | 0.0920 | 0.071* | |
H15C | 0.1932 | −0.2110 | 0.0641 | 0.071* | |
H1D | 0.122 (3) | 0.417 (4) | 0.3880 (16) | 0.086 (9)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0439 (7) | 0.0761 (10) | 0.0338 (7) | 0.0032 (7) | 0.0023 (6) | −0.0029 (7) |
O2 | 0.0375 (8) | 0.0856 (11) | 0.0385 (7) | 0.0068 (7) | −0.0017 (5) | −0.0163 (7) |
O3 | 0.0471 (9) | 0.0618 (10) | 0.1214 (16) | 0.0013 (8) | 0.0111 (9) | 0.0439 (10) |
O4 | 0.0314 (6) | 0.0397 (7) | 0.0410 (7) | 0.0046 (5) | 0.0036 (5) | −0.0054 (5) |
O5 | 0.0431 (8) | 0.0934 (13) | 0.0748 (11) | −0.0162 (8) | −0.0079 (8) | 0.0043 (10) |
O6 | 0.0605 (9) | 0.0540 (9) | 0.0847 (12) | −0.0030 (7) | 0.0398 (9) | −0.0002 (8) |
N1 | 0.0427 (9) | 0.0556 (10) | 0.0325 (8) | 0.0053 (7) | 0.0001 (6) | 0.0022 (7) |
N2 | 0.0314 (7) | 0.0358 (7) | 0.0310 (7) | 0.0046 (6) | 0.0019 (5) | −0.0011 (6) |
N3 | 0.0384 (9) | 0.0403 (9) | 0.0641 (11) | 0.0026 (7) | 0.0148 (8) | −0.0033 (8) |
C1 | 0.0386 (10) | 0.0386 (9) | 0.0361 (9) | 0.0061 (7) | 0.0011 (7) | −0.0065 (7) |
C2 | 0.0361 (9) | 0.0308 (8) | 0.0354 (9) | 0.0042 (7) | −0.0001 (7) | −0.0030 (7) |
C3 | 0.0366 (9) | 0.0469 (11) | 0.0448 (10) | 0.0057 (8) | 0.0047 (8) | −0.0063 (8) |
C4 | 0.0311 (9) | 0.0573 (12) | 0.0591 (12) | 0.0067 (9) | −0.0037 (8) | −0.0077 (10) |
C5 | 0.0462 (11) | 0.0580 (12) | 0.0445 (11) | 0.0091 (9) | −0.0133 (8) | −0.0067 (9) |
C6 | 0.0462 (11) | 0.0503 (11) | 0.0356 (9) | 0.0089 (9) | −0.0011 (8) | −0.0017 (8) |
C7 | 0.0356 (9) | 0.0305 (8) | 0.0368 (9) | 0.0043 (7) | −0.0014 (7) | −0.0005 (7) |
C8 | 0.0390 (10) | 0.0418 (10) | 0.0338 (9) | 0.0023 (8) | 0.0013 (7) | 0.0070 (7) |
C9 | 0.0296 (9) | 0.0463 (10) | 0.0367 (9) | 0.0053 (7) | −0.0021 (7) | −0.0069 (8) |
C10 | 0.0334 (9) | 0.0404 (9) | 0.0312 (9) | 0.0086 (7) | −0.0021 (7) | 0.0013 (7) |
C11 | 0.0323 (8) | 0.0395 (9) | 0.0331 (9) | 0.0058 (7) | 0.0007 (7) | −0.0038 (7) |
C12 | 0.0480 (11) | 0.0508 (11) | 0.0365 (10) | 0.0058 (9) | 0.0102 (8) | 0.0077 (8) |
C13 | 0.0343 (9) | 0.0355 (9) | 0.0404 (9) | 0.0035 (7) | 0.0093 (7) | −0.0001 (7) |
C14 | 0.0537 (12) | 0.0858 (17) | 0.0354 (10) | 0.0165 (12) | −0.0089 (9) | −0.0103 (10) |
C15 | 0.0399 (10) | 0.0554 (12) | 0.0451 (10) | −0.0058 (9) | 0.0013 (8) | 0.0002 (9) |
O1—C1 | 1.321 (2) | C4—H4A | 0.9300 |
O1—H1D | 0.96 (3) | C5—C6 | 1.382 (3) |
O2—C1 | 1.209 (2) | C5—H5A | 0.9300 |
O3—C8 | 1.199 (2) | C6—C7 | 1.389 (2) |
O4—C8 | 1.337 (2) | C6—H6A | 0.9300 |
O4—C9 | 1.459 (2) | C7—C8 | 1.499 (2) |
O5—N3 | 1.221 (2) | C9—C14 | 1.510 (3) |
O6—N3 | 1.235 (2) | C9—C10 | 1.517 (2) |
N1—C11 | 1.329 (2) | C9—H9A | 0.9800 |
N1—C12 | 1.356 (3) | C10—H10A | 0.9700 |
N2—C11 | 1.358 (2) | C10—H10B | 0.9700 |
N2—C13 | 1.386 (2) | C11—C15 | 1.482 (3) |
N2—C10 | 1.468 (2) | C12—C13 | 1.356 (3) |
N3—C13 | 1.418 (2) | C12—H12A | 0.9300 |
C1—C2 | 1.494 (2) | C14—H14A | 0.9600 |
C2—C3 | 1.394 (2) | C14—H14B | 0.9600 |
C2—C7 | 1.396 (3) | C14—H14C | 0.9600 |
C3—C4 | 1.382 (3) | C15—H15A | 0.9600 |
C3—H3A | 0.9300 | C15—H15B | 0.9600 |
C4—C5 | 1.377 (3) | C15—H15C | 0.9600 |
C1—O1—H1D | 111.9 (17) | O4—C9—C14 | 108.32 (15) |
C8—O4—C9 | 117.58 (14) | O4—C9—C10 | 106.80 (13) |
C11—N1—C12 | 106.87 (15) | C14—C9—C10 | 111.08 (16) |
C11—N2—C13 | 105.64 (14) | O4—C9—H9A | 110.2 |
C11—N2—C10 | 125.19 (15) | C14—C9—H9A | 110.2 |
C13—N2—C10 | 129.14 (14) | C10—C9—H9A | 110.2 |
O5—N3—O6 | 123.59 (18) | N2—C10—C9 | 112.30 (14) |
O5—N3—C13 | 119.33 (17) | N2—C10—H10A | 109.1 |
O6—N3—C13 | 117.08 (18) | C9—C10—H10A | 109.1 |
O2—C1—O1 | 123.72 (16) | N2—C10—H10B | 109.1 |
O2—C1—C2 | 122.70 (16) | C9—C10—H10B | 109.1 |
O1—C1—C2 | 113.58 (15) | H10A—C10—H10B | 107.9 |
C3—C2—C7 | 119.43 (16) | N1—C11—N2 | 111.01 (16) |
C3—C2—C1 | 121.00 (16) | N1—C11—C15 | 124.67 (16) |
C7—C2—C1 | 119.57 (15) | N2—C11—C15 | 124.30 (16) |
C4—C3—C2 | 120.16 (18) | N1—C12—C13 | 109.17 (16) |
C4—C3—H3A | 119.9 | N1—C12—H12A | 125.4 |
C2—C3—H3A | 119.9 | C13—C12—H12A | 125.4 |
C5—C4—C3 | 120.29 (18) | C12—C13—N2 | 107.31 (15) |
C5—C4—H4A | 119.9 | C12—C13—N3 | 127.45 (17) |
C3—C4—H4A | 119.9 | N2—C13—N3 | 125.24 (16) |
C4—C5—C6 | 120.17 (18) | C9—C14—H14A | 109.5 |
C4—C5—H5A | 119.9 | C9—C14—H14B | 109.5 |
C6—C5—H5A | 119.9 | H14A—C14—H14B | 109.5 |
C5—C6—C7 | 120.27 (18) | C9—C14—H14C | 109.5 |
C5—C6—H6A | 119.9 | H14A—C14—H14C | 109.5 |
C7—C6—H6A | 119.9 | H14B—C14—H14C | 109.5 |
C6—C7—C2 | 119.67 (16) | C11—C15—H15A | 109.5 |
C6—C7—C8 | 117.84 (16) | C11—C15—H15B | 109.5 |
C2—C7—C8 | 122.49 (15) | H15A—C15—H15B | 109.5 |
O3—C8—O4 | 124.94 (17) | C11—C15—H15C | 109.5 |
O3—C8—C7 | 124.65 (17) | H15A—C15—H15C | 109.5 |
O4—C8—C7 | 110.22 (15) | H15B—C15—H15C | 109.5 |
O2—C1—C2—C3 | −176.28 (18) | C8—O4—C9—C10 | −127.65 (16) |
O1—C1—C2—C3 | 3.6 (2) | C11—N2—C10—C9 | −99.49 (19) |
O2—C1—C2—C7 | 3.6 (3) | C13—N2—C10—C9 | 82.8 (2) |
O1—C1—C2—C7 | −176.53 (16) | O4—C9—C10—N2 | 61.80 (19) |
C7—C2—C3—C4 | 0.1 (3) | C14—C9—C10—N2 | 179.71 (16) |
C1—C2—C3—C4 | −179.99 (17) | C12—N1—C11—N2 | 0.6 (2) |
C2—C3—C4—C5 | −1.1 (3) | C12—N1—C11—C15 | −177.69 (17) |
C3—C4—C5—C6 | 0.9 (3) | C13—N2—C11—N1 | −0.60 (19) |
C4—C5—C6—C7 | 0.2 (3) | C10—N2—C11—N1 | −178.73 (15) |
C5—C6—C7—C2 | −1.1 (3) | C13—N2—C11—C15 | 177.73 (17) |
C5—C6—C7—C8 | 177.87 (18) | C10—N2—C11—C15 | −0.4 (3) |
C3—C2—C7—C6 | 1.0 (3) | C11—N1—C12—C13 | −0.4 (2) |
C1—C2—C7—C6 | −178.91 (16) | N1—C12—C13—N2 | 0.0 (2) |
C3—C2—C7—C8 | −177.98 (16) | N1—C12—C13—N3 | −179.84 (17) |
C1—C2—C7—C8 | 2.1 (3) | C11—N2—C13—C12 | 0.33 (19) |
C9—O4—C8—O3 | 8.2 (3) | C10—N2—C13—C12 | 178.35 (16) |
C9—O4—C8—C7 | −176.63 (13) | C11—N2—C13—N3 | −179.79 (16) |
C6—C7—C8—O3 | 77.9 (3) | C10—N2—C13—N3 | −1.8 (3) |
C2—C7—C8—O3 | −103.1 (2) | O5—N3—C13—C12 | 169.8 (2) |
C6—C7—C8—O4 | −97.27 (19) | O6—N3—C13—C12 | −10.0 (3) |
C2—C7—C8—O4 | 81.7 (2) | O5—N3—C13—N2 | −10.1 (3) |
C8—O4—C9—C14 | 112.64 (19) | O6—N3—C13—N2 | 170.11 (16) |
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9A···O5 | 0.98 | 2.53 | 3.115 (3) | 118 |
O1—H1D···N1i | 0.96 (3) | 1.78 (3) | 2.730 (2) | 175 (3) |
Symmetry code: (i) x, −y+1/2, z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9A···O5 | 0.98 | 2.53 | 3.115 (3) | 118 |
O1—H1D···N1i | 0.96 (3) | 1.78 (3) | 2.730 (2) | 175 (3) |
Symmetry code: (i) x, −y+1/2, z+1/2. |
Acknowledgements
The authors would like to acknowledge Nabiqasim Pharmaceutical Industries (PVT) Ltd for the financial support during the research work. HAS is grateful to Nasir Ahmed Shamsi MD for moral support and SAAS would like to acknowledge the Ministry of Higher Education (MOHE) for financial support under the Fundamental Research Grant Scheme (FRGS) with reference numbers 600-RMI/FRGS 5/3 (12/2012).
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Nitroimidazoles are well recognized as antibacterial agents since the early 1950s as azomycin, i.e. 2-nitroimidazole, was discovered (Maeda et al., 1953). The imidazole moiety has a wide range of biological activities such as anticancer, antifungal, antibacterial, antitubercular, antiparasitic, antihistaminic, antineuropathic, antihypertensive, anti-inflammatory, antiobesity, antiviral, antitumor, antihelmintic, antiallergic, antineoplastic, local analgesic, and spazmolytic activities (Larina & Lopyrev, 2009; Zhang et al., 2014). Nowadays, various drugs are available which belongs to the nitroimidazole class such as secnidazole (Flagentyl), metronidazole (Flagyl), ornidazole (Xynor), tinidazole (Fasigyn) and others. Secnidazole is an efficient drug in the treatment of protozoal infections. Secnidazole has been explored for the treatment of amoebiasis, giardiasis, urogenital trichomoniasis and nonspecific bacterial vaginosis (Gillis & Wiseman, 1996).
In the title compound (Fig. 1), the mean planes through the benzene (C2–C7) and imidazole (N2/C11/N1/C12/C13) rings form a dihedral angle of 34.93 (10)°. The bond lengths and angles are within the normal ranges and in agreement with those observed in related compounds (Xiao et al., 2008; Shahid et al.; 2014). The molecular conformation is stabilized by a non-classical C—H···O hydrogen bond (Table 1). In the crystal, molecules are linked into chains parallel to the c axis via intermolecular O—H···N hydrogen bonds (Table 1, Fig. 2).