
Acta Cryst. (2010). E66, o2045 [ doi:10.1107/S1600536810027856 ]
The Schiff base molecule in the title compound, C14H11BrN2O4·H2O, is almost planar with an r.m.s. deviation for the non-H atoms of 0.16 Å. In the crystal structure, the Schiff base molecules and the water molecules are linked together by intermolecular N-H
O and O-H
O hydrogen bonds, leading to layers parallel to the bc plane. An intramolecular O-H
N hydrogen bond involving the imine N atom and a hydroxy substituent is also observed.
An ethanolic solution (15 ml) of 3,5-dihydroxybenzohydrazide (0.67 g, 4 mmol) and 5-bromosalicylaldehyde (0.8 g, 4 mmol) was refluxed for 2 h. The solution was then cooled and the solid product formed was filtered off, washed with cold ethanol, and dried over silica gel. Crystals of the title compound were obtained by slow evaporation of a DMSO solution at room temperature.
The carbon-bound H atoms were placed in calculated positions (C—H fixed to 0.93 Å) and treated as riding on their parent carbon atoms with Uiso(H) set to 1.2 Ueq(carrier C). The nitrogen- and oxygen-bound H atoms were located in a difference map and refined as free atoms, with N—H and O—H distances restrained to 0.86 (2) and 0.82 (2) Å, respectively.
Data collection: APEX2 (Bruker, 2007); cell refinement: 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: X-SEED (Barbour, 2001); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).
| C14H11BrN2O4·H2O | F(000) = 744 |
| Mr = 369.17 | Dx = 1.721 Mg m−3 |
| Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2ybc | Cell parameters from 3109 reflections |
| a = 13.5685 (3) Å | θ = 3.0–26.1° |
| b = 8.0532 (2) Å | µ = 2.91 mm−1 |
| c = 13.2447 (2) Å | T = 296 K |
| β = 100.186 (1)° | Plate, yellow |
| V = 1424.44 (5) Å3 | 0.58 × 0.33 × 0.06 mm |
| Z = 4 |
| Bruker APEXII CCD diffractometer | 2579 independent reflections |
| Radiation source: fine-focus sealed tube | 2183 reflections with I > 2σ(I) |
| graphite | Rint = 0.034 |
| φ and ω scans | θmax = 25.3°, θmin = 3.0° |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −16→16 |
| Tmin = 0.283, Tmax = 0.845 | k = −9→9 |
| 9148 measured reflections | l = −15→15 |
| 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)] = 0.031 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.077 | H atoms treated by a mixture of independent and constrained refinement |
| S = 1.04 | w = 1/[σ2(Fo2) + (0.0328P)2 + 0.7124P] where P = (Fo2 + 2Fc2)/3 |
| 2579 reflections | (Δ/σ)max = 0.001 |
| 217 parameters | Δρmax = 0.45 e Å−3 |
| 6 restraints | Δρmin = −0.56 e Å−3 |
| 0 constraints |
| C14H11BrN2O4·H2O | V = 1424.44 (5) Å3 |
| Mr = 369.17 | Z = 4 |
| Monoclinic, P21/c | Mo Kα radiation |
| a = 13.5685 (3) Å | µ = 2.91 mm−1 |
| b = 8.0532 (2) Å | T = 296 K |
| c = 13.2447 (2) Å | 0.58 × 0.33 × 0.06 mm |
| β = 100.186 (1)° |
| Bruker APEXII CCD diffractometer | 2579 independent reflections |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2183 reflections with I > 2σ(I) |
| Tmin = 0.283, Tmax = 0.845 | Rint = 0.034 |
| 9148 measured reflections | θmax = 25.3° |
| R[F2 > 2σ(F2)] = 0.031 | H atoms treated by a mixture of independent and constrained refinement |
| wR(F2) = 0.077 | Δρmax = 0.45 e Å−3 |
| S = 1.04 | Δρmin = −0.56 e Å−3 |
| 2579 reflections | Absolute structure: ? |
| 217 parameters | Flack parameter: ? |
| 6 restraints | Rogers parameter: ? |
| x | y | z | Uiso*/Ueq | ||
| Br1 | 0.54976 (2) | 0.19522 (4) | 0.67677 (2) | 0.05405 (13) | |
| O1 | 0.25489 (15) | 0.4914 (3) | 0.33122 (13) | 0.0448 (5) | |
| H1 | 0.210 (2) | 0.542 (4) | 0.351 (2) | 0.067* | |
| O8 | −0.01522 (14) | 0.6853 (2) | 0.34596 (12) | 0.0375 (4) | |
| O11 | −0.18429 (14) | 0.9113 (2) | 0.71231 (12) | 0.0378 (4) | |
| H11 | −0.1355 (18) | 0.868 (4) | 0.749 (2) | 0.057* | |
| O13 | −0.29944 (14) | 1.0800 (2) | 0.37286 (13) | 0.0440 (5) | |
| H13 | −0.285 (3) | 1.075 (4) | 0.3181 (17) | 0.066* | |
| N1 | 0.15274 (14) | 0.5993 (2) | 0.47190 (14) | 0.0279 (4) | |
| N2 | 0.07629 (15) | 0.6835 (2) | 0.50575 (14) | 0.0277 (4) | |
| H2N | 0.088 (2) | 0.712 (3) | 0.5686 (14) | 0.033* | |
| C1 | 0.31939 (19) | 0.4270 (3) | 0.41219 (17) | 0.0312 (5) | |
| C2 | 0.3994 (2) | 0.3354 (3) | 0.39071 (19) | 0.0402 (6) | |
| H2 | 0.4072 | 0.3208 | 0.3229 | 0.048* | |
| C3 | 0.4676 (2) | 0.2657 (3) | 0.4683 (2) | 0.0391 (6) | |
| H3 | 0.5211 | 0.2037 | 0.4534 | 0.047* | |
| C4 | 0.45524 (18) | 0.2895 (3) | 0.56914 (18) | 0.0330 (6) | |
| C5 | 0.37678 (18) | 0.3807 (3) | 0.59223 (17) | 0.0319 (5) | |
| H5 | 0.3701 | 0.3951 | 0.6603 | 0.038* | |
| C6 | 0.30662 (17) | 0.4524 (3) | 0.51387 (16) | 0.0278 (5) | |
| C7 | 0.22369 (18) | 0.5450 (3) | 0.54062 (17) | 0.0300 (5) | |
| H7 | 0.2219 | 0.5656 | 0.6094 | 0.036* | |
| C8 | −0.00598 (18) | 0.7237 (3) | 0.43815 (16) | 0.0266 (5) | |
| C9 | −0.08615 (17) | 0.8158 (3) | 0.47789 (16) | 0.0248 (5) | |
| C10 | −0.09485 (18) | 0.8153 (3) | 0.58150 (16) | 0.0274 (5) | |
| H10 | −0.0499 | 0.7559 | 0.6293 | 0.033* | |
| C11 | −0.17126 (17) | 0.9044 (3) | 0.61131 (16) | 0.0276 (5) | |
| C12 | −0.23974 (18) | 0.9932 (3) | 0.54147 (17) | 0.0303 (5) | |
| H12 | −0.2908 | 1.0530 | 0.5632 | 0.036* | |
| C13 | −0.23079 (18) | 0.9912 (3) | 0.43882 (16) | 0.0291 (5) | |
| C14 | −0.15405 (17) | 0.9038 (3) | 0.40695 (16) | 0.0283 (5) | |
| H14 | −0.1479 | 0.9040 | 0.3381 | 0.034* | |
| O2 | 0.12746 (16) | 0.7432 (3) | 0.72574 (13) | 0.0428 (5) | |
| H2A | 0.091 (2) | 0.772 (4) | 0.764 (2) | 0.064* | |
| H2B | 0.153 (3) | 0.656 (3) | 0.750 (2) | 0.064* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| Br1 | 0.03931 (19) | 0.0753 (2) | 0.04679 (19) | 0.02026 (15) | 0.00548 (13) | 0.01280 (14) |
| O1 | 0.0449 (12) | 0.0626 (13) | 0.0261 (9) | 0.0149 (10) | 0.0044 (8) | −0.0005 (8) |
| O8 | 0.0353 (10) | 0.0545 (11) | 0.0224 (8) | 0.0033 (9) | 0.0047 (7) | −0.0065 (7) |
| O11 | 0.0417 (11) | 0.0525 (11) | 0.0209 (8) | 0.0101 (9) | 0.0098 (7) | 0.0018 (7) |
| O13 | 0.0447 (11) | 0.0571 (12) | 0.0291 (9) | 0.0212 (10) | 0.0033 (8) | 0.0079 (8) |
| N1 | 0.0269 (11) | 0.0292 (10) | 0.0281 (10) | 0.0012 (9) | 0.0061 (8) | −0.0039 (8) |
| N2 | 0.0273 (11) | 0.0341 (11) | 0.0221 (9) | 0.0035 (9) | 0.0048 (8) | −0.0063 (8) |
| C1 | 0.0308 (13) | 0.0351 (13) | 0.0275 (12) | 0.0001 (11) | 0.0047 (10) | 0.0000 (10) |
| C2 | 0.0397 (16) | 0.0533 (17) | 0.0302 (13) | 0.0037 (13) | 0.0133 (11) | −0.0057 (11) |
| C3 | 0.0316 (15) | 0.0451 (15) | 0.0431 (15) | 0.0054 (12) | 0.0135 (11) | −0.0041 (11) |
| C4 | 0.0266 (14) | 0.0382 (14) | 0.0338 (13) | 0.0010 (11) | 0.0039 (10) | 0.0021 (10) |
| C5 | 0.0316 (14) | 0.0382 (13) | 0.0271 (12) | 0.0016 (11) | 0.0082 (10) | −0.0020 (10) |
| C6 | 0.0268 (13) | 0.0294 (12) | 0.0276 (11) | −0.0035 (10) | 0.0058 (9) | −0.0041 (9) |
| C7 | 0.0306 (13) | 0.0348 (13) | 0.0251 (11) | 0.0009 (11) | 0.0066 (10) | −0.0049 (9) |
| C8 | 0.0278 (13) | 0.0289 (12) | 0.0233 (12) | −0.0034 (10) | 0.0053 (9) | −0.0001 (9) |
| C9 | 0.0243 (12) | 0.0269 (11) | 0.0233 (11) | −0.0032 (9) | 0.0041 (9) | −0.0015 (9) |
| C10 | 0.0290 (13) | 0.0307 (12) | 0.0216 (11) | 0.0007 (10) | 0.0015 (9) | 0.0012 (9) |
| C11 | 0.0301 (13) | 0.0315 (12) | 0.0222 (11) | −0.0034 (10) | 0.0072 (9) | −0.0009 (9) |
| C12 | 0.0290 (13) | 0.0327 (13) | 0.0304 (12) | 0.0029 (10) | 0.0080 (10) | −0.0006 (9) |
| C13 | 0.0289 (13) | 0.0299 (12) | 0.0271 (11) | 0.0012 (10) | 0.0008 (10) | 0.0032 (9) |
| C14 | 0.0322 (14) | 0.0340 (13) | 0.0182 (10) | −0.0018 (11) | 0.0034 (9) | −0.0002 (9) |
| O2 | 0.0497 (13) | 0.0487 (11) | 0.0308 (10) | 0.0051 (10) | 0.0093 (8) | 0.0000 (8) |
| Br1—C4 | 1.899 (2) | C4—C5 | 1.372 (3) |
| O1—C1 | 1.361 (3) | C5—C6 | 1.402 (3) |
| O1—H1 | 0.812 (18) | C5—H5 | 0.9300 |
| O8—C8 | 1.244 (3) | C6—C7 | 1.445 (3) |
| O11—C11 | 1.381 (3) | C7—H7 | 0.9300 |
| O11—H11 | 0.827 (18) | C8—C9 | 1.487 (3) |
| O13—C13 | 1.361 (3) | C9—C14 | 1.389 (3) |
| O13—H13 | 0.785 (18) | C9—C10 | 1.398 (3) |
| N1—C7 | 1.279 (3) | C10—C11 | 1.375 (3) |
| N1—N2 | 1.379 (3) | C10—H10 | 0.9300 |
| N2—C8 | 1.341 (3) | C11—C12 | 1.388 (3) |
| N2—H2N | 0.851 (17) | C12—C13 | 1.386 (3) |
| C1—C2 | 1.383 (4) | C12—H12 | 0.9300 |
| C1—C6 | 1.403 (3) | C13—C14 | 1.383 (3) |
| C2—C3 | 1.375 (4) | C14—H14 | 0.9300 |
| C2—H2 | 0.9300 | O2—H2A | 0.807 (18) |
| C3—C4 | 1.389 (3) | O2—H2B | 0.825 (18) |
| C3—H3 | 0.9300 | ||
| C1—O1—H1 | 110 (2) | N1—C7—C6 | 121.5 (2) |
| C11—O11—H11 | 109 (2) | N1—C7—H7 | 119.2 |
| C13—O13—H13 | 108 (3) | C6—C7—H7 | 119.2 |
| C7—N1—N2 | 116.85 (18) | O8—C8—N2 | 121.5 (2) |
| C8—N2—N1 | 119.13 (18) | O8—C8—C9 | 121.2 (2) |
| C8—N2—H2N | 125.0 (18) | N2—C8—C9 | 117.29 (18) |
| N1—N2—H2N | 115.7 (18) | C14—C9—C10 | 120.3 (2) |
| O1—C1—C2 | 117.4 (2) | C14—C9—C8 | 117.02 (19) |
| O1—C1—C6 | 122.0 (2) | C10—C9—C8 | 122.7 (2) |
| C2—C1—C6 | 120.6 (2) | C11—C10—C9 | 118.6 (2) |
| C3—C2—C1 | 120.9 (2) | C11—C10—H10 | 120.7 |
| C3—C2—H2 | 119.6 | C9—C10—H10 | 120.7 |
| C1—C2—H2 | 119.6 | C10—C11—O11 | 122.1 (2) |
| C2—C3—C4 | 118.8 (2) | C10—C11—C12 | 121.8 (2) |
| C2—C3—H3 | 120.6 | O11—C11—C12 | 116.1 (2) |
| C4—C3—H3 | 120.6 | C13—C12—C11 | 118.9 (2) |
| C5—C4—C3 | 121.3 (2) | C13—C12—H12 | 120.5 |
| C5—C4—Br1 | 119.64 (18) | C11—C12—H12 | 120.5 |
| C3—C4—Br1 | 119.10 (19) | O13—C13—C14 | 122.5 (2) |
| C4—C5—C6 | 120.5 (2) | O13—C13—C12 | 117.0 (2) |
| C4—C5—H5 | 119.8 | C14—C13—C12 | 120.4 (2) |
| C6—C5—H5 | 119.8 | C13—C14—C9 | 119.91 (19) |
| C5—C6—C1 | 117.9 (2) | C13—C14—H14 | 120.0 |
| C5—C6—C7 | 119.1 (2) | C9—C14—H14 | 120.0 |
| C1—C6—C7 | 123.0 (2) | H2A—O2—H2B | 105 (3) |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1···N1 | 0.81 (2) | 1.95 (2) | 2.657 (2) | 145 (3) |
| N2—H2N···O2 | 0.85 (2) | 2.07 (2) | 2.913 (3) | 170 (2) |
| O1—H1···O2i | 0.81 (2) | 2.52 (3) | 2.942 (3) | 114 (3) |
| O11—H11···O8ii | 0.83 (2) | 1.94 (2) | 2.750 (2) | 168 (3) |
| O13—H13···O1iii | 0.79 (2) | 2.19 (2) | 2.959 (2) | 165 (3) |
| O2—H2A···O8ii | 0.81 (2) | 1.98 (2) | 2.776 (3) | 171 (4) |
| O2—H2B···O11iv | 0.83 (2) | 2.06 (2) | 2.861 (3) | 165 (3) |
| Symmetry codes: (i) x, −y+3/2, z−1/2; (ii) x, −y+3/2, z+1/2; (iii) −x, y+1/2, −z+1/2; (iv) −x, y−1/2, −z+3/2. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1···N1 | 0.81 (2) | 1.95 (2) | 2.657 (2) | 145 (3) |
| N2—H2N···O2 | 0.85 (2) | 2.07 (2) | 2.913 (3) | 170 (2) |
| O11—H11···O8i | 0.83 (2) | 1.94 (2) | 2.750 (2) | 168 (3) |
| O13—H13···O1ii | 0.79 (2) | 2.19 (2) | 2.959 (2) | 165 (3) |
| O2—H2A···O8i | 0.81 (2) | 1.98 (2) | 2.776 (3) | 171 (4) |
| O2—H2B···O11iii | 0.83 (2) | 2.06 (2) | 2.861 (3) | 165 (3) |
| Symmetry codes: (i) x, −y+3/2, z+1/2; (ii) −x, y+1/2, −z+1/2; (iii) −x, y−1/2, −z+3/2. |
The authors thank the University of Malaya for funding this study (FRGS grant No. FP009/2008 C)
Barbour, L. J. (2001). J. Supramol. Chem. 1, 189–191.
Bruker (2007). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Deng, S., Han, L., Huang, S., Zhang, H., Diao, Y. & Liu, K. (2009). Acta Cryst. E65, o721.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920–925.
The molecular structure of the title compound is shown in Fig. 1, and the crystal structure in Fig. 2. The present study shows that Br and Cl analogues (Deng et al., 2009) are isotypic crystals.