organic compounds
(E)-N′-(2-Chloro-5-nitrobenzylidene)-4-methoxybenzohydrazide
aSchool of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, People's Republic of China, and bCollege of Sciences, Shenyang University, Shenyang 110044, People's Republic of China
*Correspondence e-mail: hongyan_ban@163.com
In the title compound, C15H12ClN3O4, the benzohydrazide group is not planar and the molecule exists in a trans configuration with respect to the methylidene unit. The dihedral angle between the two substituted benzene rings is 0.4 (3)°. In the molecules are linked by intermolecular N—H⋯O hydrogen bonds, forming chains parallel to the c axis.
Related literature
For the biological activity of et al. (2007); Raj et al. (2007); Jimenez-Pulido et al. (2008). For related structures, see: Yehye et al. (2008); Fun, Patil, Jebas et al. (2008); Yang et al. (2008); Ejsmont et al. (2008); Fun, Patil, Rao et al. (2008). For reference bond lengths, see: Allen et al. (1987).
see: ZhongExperimental
Crystal data
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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/S1600536808034107/rz2255sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808034107/rz2255Isup2.hkl
The compound was prepared by refluxing 2-chloro-5-nitrobenzaldehyde (1.0 mol) with 4-methoxybenzohydrazide (1.0 mol) in methanol (100 ml). Excess methanol was removed from the mixture by distillation. The colourless solid product was filtered, and washed three times with methanol. Colourless block crystals of the title compound were obtained from a methanol solution by slow evaporation in air.
Atom H2 was located in a difference Fourier map and refined isotropically, with the N–H distance restrained to 0.90 (1) Å. Other H atoms were placed in calculated positions (C—H = 0.93-0.96 Å) and refined as riding with Uiso(H) = 1.2 Ueq(C) or 1.5Ueq(C) for methyl H atoms. A rotating group model was used for the methyl group.
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).C15H12ClN3O4 | F(000) = 688 |
Mr = 333.73 | Dx = 1.500 Mg m−3 |
Monoclinic, Cc | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: C -2yc | Cell parameters from 1899 reflections |
a = 11.724 (2) Å | θ = 2.7–26.0° |
b = 13.482 (3) Å | µ = 0.28 mm−1 |
c = 9.4259 (19) Å | T = 298 K |
β = 97.199 (3)° | Block, colourless |
V = 1478.1 (5) Å3 | 0.20 × 0.20 × 0.17 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 2735 independent reflections |
Radiation source: fine-focus sealed tube | 2320 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.015 |
ω scans | θmax = 27.5°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→15 |
Tmin = 0.946, Tmax = 0.953 | k = −17→14 |
4284 measured reflections | l = −12→11 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.035 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.090 | w = 1/[σ2(Fo2) + (0.0432P)2 + 0.2836P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max < 0.001 |
2735 reflections | Δρmax = 0.14 e Å−3 |
212 parameters | Δρmin = −0.19 e Å−3 |
3 restraints | Absolute structure: Flack (1983), 1079 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.01 (7) |
C15H12ClN3O4 | V = 1478.1 (5) Å3 |
Mr = 333.73 | Z = 4 |
Monoclinic, Cc | Mo Kα radiation |
a = 11.724 (2) Å | µ = 0.28 mm−1 |
b = 13.482 (3) Å | T = 298 K |
c = 9.4259 (19) Å | 0.20 × 0.20 × 0.17 mm |
β = 97.199 (3)° |
Bruker SMART CCD area-detector diffractometer | 2735 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2320 reflections with I > 2σ(I) |
Tmin = 0.946, Tmax = 0.953 | Rint = 0.015 |
4284 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.090 | Δρmax = 0.14 e Å−3 |
S = 1.04 | Δρmin = −0.19 e Å−3 |
2735 reflections | Absolute structure: Flack (1983), 1079 Friedel pairs |
212 parameters | Absolute structure parameter: −0.01 (7) |
3 restraints |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | ||
Cl1 | 0.12621 (9) | 0.12406 (5) | 0.37773 (10) | 0.0861 (3) | |
N1 | 0.13488 (17) | 0.41377 (14) | 0.18463 (19) | 0.0474 (5) | |
N2 | 0.09570 (18) | 0.49328 (13) | 0.2558 (2) | 0.0477 (4) | |
N3 | 0.3330 (2) | 0.2029 (2) | −0.1503 (3) | 0.0806 (8) | |
O1 | 0.07475 (18) | 0.58146 (13) | 0.05053 (18) | 0.0603 (5) | |
O2 | −0.0721 (2) | 0.92744 (16) | 0.4294 (3) | 0.0838 (7) | |
O3 | 0.3489 (3) | 0.2876 (2) | −0.1823 (3) | 0.1312 (12) | |
O4 | 0.3571 (2) | 0.1320 (2) | −0.2230 (3) | 0.1006 (8) | |
C1 | 0.1933 (2) | 0.24746 (17) | 0.1773 (2) | 0.0466 (5) | |
C2 | 0.1870 (2) | 0.15042 (18) | 0.2246 (3) | 0.0521 (6) | |
C3 | 0.2269 (2) | 0.07102 (18) | 0.1509 (3) | 0.0625 (7) | |
H3 | 0.2211 | 0.0067 | 0.1848 | 0.075* | |
C4 | 0.2750 (2) | 0.0880 (2) | 0.0280 (3) | 0.0626 (7) | |
H4 | 0.3019 | 0.0356 | −0.0227 | 0.075* | |
C5 | 0.2829 (2) | 0.1836 (2) | −0.0190 (3) | 0.0574 (7) | |
C6 | 0.2439 (2) | 0.26332 (17) | 0.0522 (3) | 0.0506 (6) | |
H6 | 0.2511 | 0.3273 | 0.0176 | 0.061* | |
C7 | 0.1489 (2) | 0.33260 (16) | 0.2508 (2) | 0.0478 (5) | |
H7 | 0.1315 | 0.3267 | 0.3440 | 0.057* | |
C8 | 0.06846 (19) | 0.57703 (16) | 0.1789 (2) | 0.0437 (5) | |
C9 | 0.0312 (2) | 0.66442 (16) | 0.2574 (2) | 0.0432 (5) | |
C10 | −0.0184 (2) | 0.66089 (17) | 0.3825 (2) | 0.0466 (5) | |
H10 | −0.0277 | 0.6001 | 0.4262 | 0.056* | |
C11 | −0.0548 (2) | 0.7478 (2) | 0.4443 (3) | 0.0536 (6) | |
H11 | −0.0890 | 0.7449 | 0.5280 | 0.064* | |
C12 | −0.0394 (2) | 0.83779 (18) | 0.3803 (3) | 0.0594 (7) | |
C13 | 0.0120 (3) | 0.8419 (2) | 0.2577 (3) | 0.0664 (7) | |
H13 | 0.0243 | 0.9031 | 0.2166 | 0.080* | |
C14 | 0.0454 (2) | 0.75687 (18) | 0.1949 (3) | 0.0576 (7) | |
H14 | 0.0778 | 0.7607 | 0.1099 | 0.069* | |
C15 | −0.1293 (3) | 0.9299 (3) | 0.5519 (5) | 0.0924 (11) | |
H15A | −0.1978 | 0.8904 | 0.5359 | 0.139* | |
H15B | −0.1493 | 0.9972 | 0.5714 | 0.139* | |
H15C | −0.0796 | 0.9039 | 0.6320 | 0.139* | |
H2 | 0.085 (2) | 0.490 (2) | 0.3482 (13) | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1402 (7) | 0.0565 (4) | 0.0680 (4) | 0.0130 (5) | 0.0377 (4) | 0.0108 (4) |
N1 | 0.0625 (12) | 0.0416 (10) | 0.0391 (10) | 0.0010 (8) | 0.0102 (9) | −0.0058 (8) |
N2 | 0.0704 (12) | 0.0389 (9) | 0.0353 (9) | 0.0033 (8) | 0.0128 (9) | −0.0020 (7) |
N3 | 0.0738 (16) | 0.094 (2) | 0.0798 (18) | −0.0181 (14) | 0.0314 (13) | −0.0263 (16) |
O1 | 0.0928 (13) | 0.0558 (9) | 0.0343 (9) | 0.0018 (9) | 0.0157 (8) | 0.0020 (7) |
O2 | 0.0947 (15) | 0.0526 (12) | 0.1063 (18) | 0.0148 (10) | 0.0216 (13) | −0.0121 (11) |
O3 | 0.187 (3) | 0.098 (2) | 0.131 (2) | −0.042 (2) | 0.109 (2) | −0.0274 (17) |
O4 | 0.1071 (17) | 0.1107 (19) | 0.0928 (16) | −0.0112 (14) | 0.0478 (14) | −0.0467 (14) |
C1 | 0.0483 (12) | 0.0468 (12) | 0.0440 (13) | −0.0013 (10) | 0.0028 (10) | −0.0074 (10) |
C2 | 0.0607 (15) | 0.0487 (12) | 0.0455 (13) | 0.0046 (11) | 0.0015 (11) | −0.0052 (10) |
C3 | 0.0749 (17) | 0.0441 (13) | 0.0663 (18) | 0.0083 (12) | 0.0008 (14) | −0.0078 (12) |
C4 | 0.0590 (15) | 0.0581 (15) | 0.0696 (18) | 0.0076 (12) | 0.0029 (13) | −0.0235 (13) |
C5 | 0.0464 (14) | 0.0688 (17) | 0.0574 (15) | −0.0061 (11) | 0.0080 (12) | −0.0217 (13) |
C6 | 0.0500 (13) | 0.0504 (13) | 0.0517 (14) | −0.0037 (12) | 0.0071 (11) | −0.0082 (11) |
C7 | 0.0631 (14) | 0.0425 (12) | 0.0379 (12) | −0.0009 (11) | 0.0067 (10) | −0.0031 (9) |
C8 | 0.0553 (13) | 0.0426 (11) | 0.0339 (11) | −0.0066 (10) | 0.0085 (9) | 0.0000 (9) |
C9 | 0.0510 (13) | 0.0428 (11) | 0.0352 (11) | 0.0004 (10) | 0.0028 (10) | −0.0001 (9) |
C10 | 0.0563 (14) | 0.0431 (12) | 0.0399 (12) | −0.0016 (10) | 0.0046 (11) | 0.0018 (10) |
C11 | 0.0512 (13) | 0.0615 (16) | 0.0481 (15) | 0.0030 (12) | 0.0064 (12) | −0.0111 (11) |
C12 | 0.0589 (15) | 0.0406 (13) | 0.0752 (19) | 0.0073 (11) | −0.0051 (14) | −0.0043 (12) |
C13 | 0.0841 (19) | 0.0430 (13) | 0.0721 (18) | 0.0036 (13) | 0.0099 (15) | 0.0094 (13) |
C14 | 0.0753 (17) | 0.0485 (14) | 0.0507 (14) | −0.0021 (12) | 0.0144 (13) | 0.0100 (11) |
C15 | 0.077 (2) | 0.081 (2) | 0.121 (3) | 0.0114 (16) | 0.017 (2) | −0.038 (2) |
Cl1—C2 | 1.725 (3) | C4—H4 | 0.9300 |
N1—C7 | 1.260 (3) | C5—C6 | 1.376 (3) |
N1—N2 | 1.374 (2) | C6—H6 | 0.9300 |
N2—C8 | 1.358 (3) | C7—H7 | 0.9300 |
N2—H2 | 0.897 (10) | C8—C9 | 1.485 (3) |
N3—O3 | 1.202 (4) | C9—C10 | 1.379 (3) |
N3—O4 | 1.229 (3) | C9—C14 | 1.397 (3) |
N3—C5 | 1.458 (4) | C10—C11 | 1.399 (3) |
O1—C8 | 1.223 (3) | C10—H10 | 0.9300 |
O2—C12 | 1.366 (3) | C11—C12 | 1.376 (4) |
O2—C15 | 1.406 (4) | C11—H11 | 0.9300 |
C1—C2 | 1.387 (3) | C12—C13 | 1.370 (4) |
C1—C6 | 1.402 (3) | C13—C14 | 1.370 (4) |
C1—C7 | 1.469 (3) | C13—H13 | 0.9300 |
C2—C3 | 1.389 (3) | C14—H14 | 0.9300 |
C3—C4 | 1.370 (4) | C15—H15A | 0.9600 |
C3—H3 | 0.9300 | C15—H15B | 0.9600 |
C4—C5 | 1.369 (4) | C15—H15C | 0.9600 |
C7—N1—N2 | 117.83 (18) | C1—C7—H7 | 120.8 |
C8—N2—N1 | 117.34 (17) | O1—C8—N2 | 121.9 (2) |
C8—N2—H2 | 120.9 (19) | O1—C8—C9 | 120.8 (2) |
N1—N2—H2 | 121.7 (19) | N2—C8—C9 | 117.29 (18) |
O3—N3—O4 | 123.0 (3) | C10—C9—C14 | 118.4 (2) |
O3—N3—C5 | 118.3 (3) | C10—C9—C8 | 125.4 (2) |
O4—N3—C5 | 118.7 (3) | C14—C9—C8 | 116.1 (2) |
C12—O2—C15 | 118.8 (3) | C9—C10—C11 | 120.7 (2) |
C2—C1—C6 | 117.3 (2) | C9—C10—H10 | 119.7 |
C2—C1—C7 | 123.4 (2) | C11—C10—H10 | 119.7 |
C6—C1—C7 | 119.3 (2) | C12—C11—C10 | 119.5 (2) |
C1—C2—C3 | 122.1 (3) | C12—C11—H11 | 120.3 |
C1—C2—Cl1 | 120.45 (19) | C10—C11—H11 | 120.3 |
C3—C2—Cl1 | 117.4 (2) | O2—C12—C13 | 114.9 (3) |
C4—C3—C2 | 119.6 (3) | O2—C12—C11 | 125.0 (3) |
C4—C3—H3 | 120.2 | C13—C12—C11 | 120.1 (2) |
C2—C3—H3 | 120.2 | C14—C13—C12 | 120.7 (2) |
C5—C4—C3 | 118.9 (2) | C14—C13—H13 | 119.7 |
C5—C4—H4 | 120.6 | C12—C13—H13 | 119.7 |
C3—C4—H4 | 120.6 | C13—C14—C9 | 120.6 (2) |
C4—C5—C6 | 122.5 (3) | C13—C14—H14 | 119.7 |
C4—C5—N3 | 119.5 (2) | C9—C14—H14 | 119.7 |
C6—C5—N3 | 118.0 (3) | O2—C15—H15A | 109.5 |
C5—C6—C1 | 119.6 (2) | O2—C15—H15B | 109.5 |
C5—C6—H6 | 120.2 | H15A—C15—H15B | 109.5 |
C1—C6—H6 | 120.2 | O2—C15—H15C | 109.5 |
N1—C7—C1 | 118.5 (2) | H15A—C15—H15C | 109.5 |
N1—C7—H7 | 120.8 | H15B—C15—H15C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O1i | 0.90 (1) | 2.15 (2) | 2.994 (3) | 156 (3) |
Symmetry code: (i) x, −y+1, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C15H12ClN3O4 |
Mr | 333.73 |
Crystal system, space group | Monoclinic, Cc |
Temperature (K) | 298 |
a, b, c (Å) | 11.724 (2), 13.482 (3), 9.4259 (19) |
β (°) | 97.199 (3) |
V (Å3) | 1478.1 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.28 |
Crystal size (mm) | 0.20 × 0.20 × 0.17 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.946, 0.953 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4284, 2735, 2320 |
Rint | 0.015 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.090, 1.04 |
No. of reflections | 2735 |
No. of parameters | 212 |
No. of restraints | 3 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.14, −0.19 |
Absolute structure | Flack (1983), 1079 Friedel pairs |
Absolute structure parameter | −0.01 (7) |
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 |
N2—H2···O1i | 0.897 (10) | 2.150 (15) | 2.994 (3) | 156 (3) |
Symmetry code: (i) x, −y+1, z+1/2. |
Acknowledgements
Financial support of this work was provided by the Research Foundation of Liaoning Province (project No. 2008470).
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.
Hydrazones derived from the condensation of aldehydes with hydrazides have been demonstrated to possess excellent biological activities (Zhong et al., 2007; Raj et al., 2007; Jimenez-Pulido et al., 2008). Due to the easy synthesis of such compounds, a great deal of hydrazones have been synthesized and structurally characterized (Yehye et al., 2008; Fun, Patil, Jebas et al., 2008; Yang et al., 2008; Ejsmont et al., 2008). We report herein the crytal structure of the title new hydrazone compound.
In the structure of the title compound (Fig. 1), the molecule exists in a trans configuration with respect to the methylidene unit. The dihedral angle between the two substituted benzene rings is 0.4 (3)°. In the 2-chloro-5-nitrophenyl unit, the nitro group is slightly twisted from the mean plane of the C1–C6 ring with a dihedral angle of 7.4 (3)°. The same pattern can ben observed in a similar hydrazone compound (Fun, Patil, Rao et al., 2008). In the 4-methoxyphenyl unit, the methoxy group is nearly coplanar with the mean plane of the C9–C14 ring, with atom C15 deviating from the C9–C14 ring by 0.098 (2) Å. The C7-N1-N2-C8 torsion angle is 7.3 (3)°. The bond distances and angles are in normal ranges (Allen et al., 1987).
In the crystal structure, molecules are linked by intermolecular N—H···O hydrogen bonds (Table 1), to form chains parallel to the c axis (Fig. 2).