organic compounds
3-Bromo-N′-(2-hydroxybenzylidene)benzohydrazide
aDepartment of Chemistry and Life Sciences, Xiangnan University, Chenzhou 423000, People's Republic of China
*Correspondence e-mail: lihebing07@163.com
The title molecule, C14H11BrN2O2, displays a trans configuration about the C=N and C—N bonds. The dihedral angle between the two benzene rings is 18.5 (3)°. An intramolecular O—H⋯N hydrogen bond is observed. In the the molecules are linked into a chain along the c axis by N—H⋯O and C—H⋯O hydrogen bonds.
Related literature
For related literature, see: Ali et al. (2002); Allen et al. (1987); Cukurovali et al. (2002); Li (2007a,b); Qian et al. (2006); Qiu et al. (2006); Tarafder et al. (2002); Yang (2006); Yang & Guo (2006); Zhao (2006).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1998); cell SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536808001293/ci2553sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808001293/ci2553Isup2.hkl
Salicylaldehyde (0.1 mmol, 12.2 mg) and 3-bromobenzoic acid hydrazide (0.1 mmol, 21.5 mg) were dissolved in methanol (10 ml). The mixture was stirred at room temperature for 10 min to give a clear yellow solution. Crystals of the title compound were formed by gradual evaporation of the solvent over 12 d at room temperature (yield 71.2%). Analysis found: C 52.45, H 3.53, N 8.86%; calculated for C14H11BrN2O2: C 52.69, H 3.47, N 8.78%.
Atom H2 was located in a difference Fourier map and refined isotropically, with the N—H distance restrained to 0.90 (1) Å. The remaining H atoms were placed in geometrically idealized positions and allowed to ride on their parent atoms, with C—H = 0.93 Å, O—H = 0.82 Å, and with Uiso(H) = 1.2Ueq(C) and 1.5Ueq(O).
Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C14H11BrN2O2 | F(000) = 640 |
Mr = 319.16 | Dx = 1.603 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2541 reflections |
a = 10.9397 (17) Å | θ = 2.3–25.8° |
b = 13.672 (2) Å | µ = 3.11 mm−1 |
c = 8.8915 (14) Å | T = 298 K |
β = 95.882 (2)° | Block, yellow |
V = 1322.8 (4) Å3 | 0.32 × 0.30 × 0.30 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 3029 independent reflections |
Radiation source: fine-focus sealed tube | 1997 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
ω scans | θmax = 27.5°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −14→11 |
Tmin = 0.436, Tmax = 0.456 | k = −17→17 |
7853 measured reflections | l = −11→11 |
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)] = 0.039 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.106 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.044P)2 + 0.8938P] where P = (Fo2 + 2Fc2)/3 |
3029 reflections | (Δ/σ)max = 0.001 |
176 parameters | Δρmax = 0.73 e Å−3 |
1 restraint | Δρmin = −0.76 e Å−3 |
C14H11BrN2O2 | V = 1322.8 (4) Å3 |
Mr = 319.16 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.9397 (17) Å | µ = 3.11 mm−1 |
b = 13.672 (2) Å | T = 298 K |
c = 8.8915 (14) Å | 0.32 × 0.30 × 0.30 mm |
β = 95.882 (2)° |
Bruker SMART CCD area-detector diffractometer | 3029 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1997 reflections with I > 2σ(I) |
Tmin = 0.436, Tmax = 0.456 | Rint = 0.022 |
7853 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 1 restraint |
wR(F2) = 0.106 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.73 e Å−3 |
3029 reflections | Δρmin = −0.76 e Å−3 |
176 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 | ||
Br1 | 0.84586 (4) | 0.69664 (2) | 0.07515 (6) | 0.07832 (19) | |
O1 | 0.5849 (2) | 0.09555 (15) | −0.3004 (2) | 0.0534 (5) | |
H1 | 0.6305 | 0.1342 | −0.2516 | 0.080* | |
O2 | 0.7840 (2) | 0.33361 (14) | −0.1658 (2) | 0.0481 (5) | |
N1 | 0.7189 (2) | 0.16000 (16) | −0.0568 (2) | 0.0389 (5) | |
N2 | 0.7749 (2) | 0.23255 (16) | 0.0345 (3) | 0.0405 (5) | |
C1 | 0.6433 (2) | −0.00290 (19) | −0.0791 (3) | 0.0368 (6) | |
C2 | 0.5861 (3) | 0.0088 (2) | −0.2268 (3) | 0.0409 (6) | |
C3 | 0.5269 (3) | −0.0700 (2) | −0.3001 (4) | 0.0538 (8) | |
H3 | 0.4882 | −0.0620 | −0.3974 | 0.065* | |
C4 | 0.5246 (3) | −0.1593 (2) | −0.2315 (4) | 0.0587 (9) | |
H4 | 0.4853 | −0.2116 | −0.2831 | 0.070* | |
C5 | 0.5801 (3) | −0.1726 (2) | −0.0866 (4) | 0.0567 (9) | |
H5 | 0.5784 | −0.2336 | −0.0405 | 0.068* | |
C6 | 0.6378 (3) | −0.0954 (2) | −0.0110 (4) | 0.0491 (7) | |
H6 | 0.6740 | −0.1043 | 0.0873 | 0.059* | |
C7 | 0.7039 (3) | 0.07677 (19) | 0.0056 (3) | 0.0398 (6) | |
H7 | 0.7325 | 0.0676 | 0.1067 | 0.048* | |
C8 | 0.8024 (3) | 0.31817 (18) | −0.0293 (3) | 0.0365 (6) | |
C9 | 0.8582 (2) | 0.39488 (19) | 0.0755 (3) | 0.0359 (6) | |
C10 | 0.8331 (3) | 0.4917 (2) | 0.0361 (3) | 0.0416 (7) | |
H10 | 0.7829 | 0.5067 | −0.0518 | 0.050* | |
C11 | 0.8834 (3) | 0.5656 (2) | 0.1290 (4) | 0.0474 (7) | |
C12 | 0.9601 (3) | 0.5450 (2) | 0.2575 (4) | 0.0552 (8) | |
H12 | 0.9943 | 0.5954 | 0.3184 | 0.066* | |
C13 | 0.9855 (3) | 0.4493 (2) | 0.2948 (3) | 0.0572 (9) | |
H13 | 1.0377 | 0.4349 | 0.3811 | 0.069* | |
C14 | 0.9343 (3) | 0.3738 (2) | 0.2055 (3) | 0.0468 (7) | |
H14 | 0.9509 | 0.3091 | 0.2329 | 0.056* | |
H2 | 0.778 (4) | 0.223 (3) | 0.1343 (14) | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.0724 (3) | 0.03681 (19) | 0.1239 (4) | 0.00291 (16) | 0.0012 (2) | −0.01230 (19) |
O1 | 0.0719 (16) | 0.0428 (11) | 0.0428 (12) | −0.0081 (10) | −0.0072 (10) | 0.0057 (9) |
O2 | 0.0717 (14) | 0.0422 (10) | 0.0285 (11) | −0.0023 (10) | −0.0047 (9) | −0.0005 (8) |
N1 | 0.0472 (14) | 0.0350 (11) | 0.0338 (12) | −0.0024 (10) | 0.0004 (10) | −0.0045 (10) |
N2 | 0.0559 (15) | 0.0350 (11) | 0.0292 (12) | −0.0041 (11) | −0.0022 (11) | −0.0036 (10) |
C1 | 0.0382 (15) | 0.0318 (13) | 0.0409 (15) | 0.0024 (11) | 0.0057 (12) | −0.0011 (11) |
C2 | 0.0441 (16) | 0.0392 (14) | 0.0397 (16) | −0.0023 (12) | 0.0052 (12) | −0.0023 (12) |
C3 | 0.060 (2) | 0.0524 (18) | 0.0481 (18) | −0.0130 (15) | −0.0005 (15) | −0.0042 (14) |
C4 | 0.060 (2) | 0.0435 (16) | 0.073 (2) | −0.0143 (15) | 0.0066 (18) | −0.0148 (16) |
C5 | 0.060 (2) | 0.0345 (15) | 0.076 (2) | −0.0035 (14) | 0.0107 (18) | 0.0042 (15) |
C6 | 0.0550 (18) | 0.0398 (15) | 0.0517 (18) | 0.0034 (13) | 0.0019 (14) | 0.0053 (13) |
C7 | 0.0452 (16) | 0.0388 (14) | 0.0342 (15) | 0.0032 (12) | −0.0013 (12) | −0.0013 (11) |
C8 | 0.0428 (16) | 0.0359 (14) | 0.0301 (15) | 0.0035 (11) | 0.0008 (11) | −0.0004 (11) |
C9 | 0.0397 (15) | 0.0373 (14) | 0.0304 (14) | −0.0036 (11) | 0.0028 (11) | −0.0023 (11) |
C10 | 0.0437 (16) | 0.0390 (15) | 0.0410 (16) | −0.0004 (12) | −0.0012 (12) | −0.0042 (12) |
C11 | 0.0468 (17) | 0.0357 (14) | 0.061 (2) | −0.0029 (12) | 0.0098 (15) | −0.0069 (13) |
C12 | 0.063 (2) | 0.0560 (19) | 0.0470 (19) | −0.0200 (16) | 0.0056 (16) | −0.0149 (15) |
C13 | 0.066 (2) | 0.067 (2) | 0.0364 (17) | −0.0203 (17) | −0.0083 (15) | 0.0003 (15) |
C14 | 0.0564 (19) | 0.0464 (16) | 0.0358 (16) | −0.0079 (14) | −0.0036 (14) | 0.0043 (12) |
Br1—C11 | 1.889 (3) | C5—C6 | 1.371 (4) |
O1—C2 | 1.354 (3) | C5—H5 | 0.93 |
O1—H1 | 0.82 | C6—H6 | 0.93 |
O2—C8 | 1.228 (3) | C7—H7 | 0.93 |
N1—C7 | 1.284 (3) | C8—C9 | 1.491 (4) |
N1—N2 | 1.384 (3) | C9—C14 | 1.384 (4) |
N2—C8 | 1.348 (3) | C9—C10 | 1.390 (4) |
N2—H2 | 0.89 (1) | C10—C11 | 1.383 (4) |
C1—C2 | 1.404 (4) | C10—H10 | 0.93 |
C1—C6 | 1.406 (4) | C11—C12 | 1.376 (5) |
C1—C7 | 1.446 (4) | C12—C13 | 1.372 (5) |
C2—C3 | 1.385 (4) | C12—H12 | 0.93 |
C3—C4 | 1.367 (5) | C13—C14 | 1.385 (4) |
C3—H3 | 0.93 | C13—H13 | 0.93 |
C4—C5 | 1.379 (5) | C14—H14 | 0.93 |
C4—H4 | 0.93 | ||
C2—O1—H1 | 109.5 | N1—C7—H7 | 119.5 |
C7—N1—N2 | 116.7 (2) | C1—C7—H7 | 119.5 |
C8—N2—N1 | 118.6 (2) | O2—C8—N2 | 123.0 (2) |
C8—N2—H2 | 124 (3) | O2—C8—C9 | 120.8 (2) |
N1—N2—H2 | 117 (3) | N2—C8—C9 | 116.3 (2) |
C2—C1—C6 | 118.1 (3) | C14—C9—C10 | 119.7 (3) |
C2—C1—C7 | 122.5 (2) | C14—C9—C8 | 123.2 (2) |
C6—C1—C7 | 119.4 (3) | C10—C9—C8 | 117.0 (2) |
O1—C2—C3 | 118.2 (3) | C11—C10—C9 | 119.2 (3) |
O1—C2—C1 | 122.2 (2) | C11—C10—H10 | 120.4 |
C3—C2—C1 | 119.5 (3) | C9—C10—H10 | 120.4 |
C4—C3—C2 | 121.0 (3) | C12—C11—C10 | 121.3 (3) |
C4—C3—H3 | 119.5 | C12—C11—Br1 | 120.1 (2) |
C2—C3—H3 | 119.5 | C10—C11—Br1 | 118.6 (2) |
C3—C4—C5 | 120.5 (3) | C13—C12—C11 | 119.1 (3) |
C3—C4—H4 | 119.7 | C13—C12—H12 | 120.5 |
C5—C4—H4 | 119.7 | C11—C12—H12 | 120.5 |
C6—C5—C4 | 119.5 (3) | C12—C13—C14 | 120.9 (3) |
C6—C5—H5 | 120.2 | C12—C13—H13 | 119.6 |
C4—C5—H5 | 120.2 | C14—C13—H13 | 119.6 |
C5—C6—C1 | 121.3 (3) | C9—C14—C13 | 119.8 (3) |
C5—C6—H6 | 119.3 | C9—C14—H14 | 120.1 |
C1—C6—H6 | 119.3 | C13—C14—H14 | 120.1 |
N1—C7—C1 | 121.0 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N1 | 0.82 | 1.93 | 2.639 (3) | 145 |
N2—H2···O2i | 0.89 (1) | 1.93 (2) | 2.806 (3) | 165 (4) |
C7—H7···O2i | 0.93 | 2.45 | 3.206 (3) | 139 |
Symmetry code: (i) x, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H11BrN2O2 |
Mr | 319.16 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 10.9397 (17), 13.672 (2), 8.8915 (14) |
β (°) | 95.882 (2) |
V (Å3) | 1322.8 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 3.11 |
Crystal size (mm) | 0.32 × 0.30 × 0.30 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.436, 0.456 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7853, 3029, 1997 |
Rint | 0.022 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.106, 1.03 |
No. of reflections | 3029 |
No. of parameters | 176 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.73, −0.76 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N1 | 0.82 | 1.93 | 2.639 (3) | 145 |
N2—H2···O2i | 0.89 (1) | 1.934 (15) | 2.806 (3) | 165 (4) |
C7—H7···O2i | 0.93 | 2.45 | 3.206 (3) | 139 |
Symmetry code: (i) x, −y+1/2, z+1/2. |
Acknowledgements
The author acknowledges a research grant from Xiangnan University.
References
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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.
The compounds derived from the condensation reaction of aromatic carbaldehydes with hydrazides exhibit a wide range of biological activities and applications (Tarafder et al., 2002; Cukurovali et al., 2002; Ali et al., 2002). Herein the author reports the crystal structure of the title compound.
The bond lengths and bond angles in the title molecule (Fig. 1) are within normal ranges (Allen et al., 1987) and comprable with those observed in similar compounds(Qiu et al., 2006; Yang and Guo, 2006; Yang, 2006). The C7?N1 double bond length of 1.284 (3) Å is comparable with that in other Schiff bases (Li, 2007b; Qian et al., 2006; Zhao, 2006). The C8—N2 bond length of 1.348 (3) Å is intermediate between a C–N single bond and a C?N double bond, because of conjugation. The dihedral angle between the C1—C6 and C9—C14 benzene rings is 18.5 (3)°. The molecule adopts a trans configuration about the C7?N1 and C8–N2 bonds.
There is an intramolecular O1—H1···N1 hydrogen bond (Table 1) in the title molecule, as observed in a similar compound (Li, 2007a). In the crystal structure, the molecules are linked into a chain along the c axis by N—H···O and C—H···O hydrogen bonds (Table 2 and Fig.2).