organic compounds
N′-[1-(4-Chlorophenyl)ethylidene]benzohydrazide
aCollege of Chemistry and Chemical Engineering, Liaocheng University, Shandong 252059, People's Republic of China
*Correspondence e-mail: drzengsy@163.com
In the title molecule, C15H13ClN2O, the two benzene rings form a dihedral angle of 5.48 (4)°. In the crystal, N—H⋯O hydrogen bonds link molecules related by translation along the a axis into chains, which are further aggregated into layers parallel to the ac plane through weak C—H⋯O and C—H⋯N interactions.
Related literature
For applications of Schiff base derivatives and their complexes, see: Chavan et al. (2011); Ray et al. (2011). For the crystal structures of related compounds, see: Nie (2008); Fun et al. (2008).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2007); cell SAINT (Bruker, 2007); 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/S1600536811042887/cv5164sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811042887/cv5164Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811042887/cv5164Isup3.cml
Benzohydrazide (5.0 mmol), 20 ml ethanol and 4-chloroacetophenone (5.0 mmol) were mixed in 50 ml flash. After refluxing 3 h, the resulting mixture was cooled to room temperature, and recrystalized from ethanol, and afforded the title compound as a crystalline solid.
All H atoms were placed in geometrically idealized positions (N—H 0.86 and C—H 0.93–0.96 Å) and treated as riding on their parent atoms, with Uiso(H) = 1.2–1.5Ueq(C,N).
Data collection: SMART (Bruker, 2007); cell
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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. View of (I) showing the atomic numbering and 30% probability displacement ellipsoids. |
C15H13ClN2O | F(000) = 568 |
Mr = 272.72 | Dx = 1.355 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 5.0714 (6) Å | Cell parameters from 385 reflections |
b = 31.430 (3) Å | θ = 2.6–18.2° |
c = 8.4128 (7) Å | µ = 0.28 mm−1 |
β = 94.388 (1)° | T = 298 K |
V = 1337.0 (2) Å3 | Needle, colourless |
Z = 4 | 0.40 × 0.30 × 0.12 mm |
Bruker SMART APEX CCD area-etector diffractometer | 2322 independent reflections |
Radiation source: fine-focus sealed tube | 711 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.156 |
ϕ and ω scans | θmax = 25.0°, θmin = 2.6° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −5→6 |
Tmin = 0.897, Tmax = 0.967 | k = −36→37 |
6717 measured reflections | l = −9→9 |
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)] = 0.089 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.205 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0367P)2] where P = (Fo2 + 2Fc2)/3 |
2322 reflections | (Δ/σ)max < 0.001 |
173 parameters | Δρmax = 0.31 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C15H13ClN2O | V = 1337.0 (2) Å3 |
Mr = 272.72 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 5.0714 (6) Å | µ = 0.28 mm−1 |
b = 31.430 (3) Å | T = 298 K |
c = 8.4128 (7) Å | 0.40 × 0.30 × 0.12 mm |
β = 94.388 (1)° |
Bruker SMART APEX CCD area-etector diffractometer | 2322 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 711 reflections with I > 2σ(I) |
Tmin = 0.897, Tmax = 0.967 | Rint = 0.156 |
6717 measured reflections |
R[F2 > 2σ(F2)] = 0.089 | 0 restraints |
wR(F2) = 0.205 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.31 e Å−3 |
2322 reflections | Δρmin = −0.24 e Å−3 |
173 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 | ||
N1 | 0.1612 (9) | 0.19148 (16) | 0.2256 (5) | 0.0650 (15) | |
H1 | 0.0012 | 0.1841 | 0.1975 | 0.078* | |
N2 | 0.2278 (10) | 0.23422 (17) | 0.2404 (6) | 0.0623 (14) | |
O1 | 0.5839 (9) | 0.17193 (12) | 0.2838 (5) | 0.0807 (14) | |
Cl1 | 0.3944 (4) | 0.44187 (5) | 0.2883 (3) | 0.1218 (10) | |
C1 | 0.3466 (15) | 0.1622 (2) | 0.2551 (7) | 0.0666 (18) | |
C2 | 0.2677 (14) | 0.11724 (19) | 0.2454 (9) | 0.072 (2) | |
C3 | 0.4245 (14) | 0.0876 (2) | 0.3254 (8) | 0.091 (2) | |
H3 | 0.5794 | 0.0961 | 0.3833 | 0.109* | |
C4 | 0.354 (2) | 0.0454 (2) | 0.3206 (11) | 0.115 (3) | |
H4 | 0.4591 | 0.0259 | 0.3790 | 0.138* | |
C5 | 0.135 (2) | 0.0313 (3) | 0.2335 (14) | 0.128 (4) | |
H5 | 0.0881 | 0.0027 | 0.2317 | 0.154* | |
C6 | −0.0118 (16) | 0.0606 (3) | 0.1496 (12) | 0.130 (3) | |
H6 | −0.1606 | 0.0520 | 0.0864 | 0.156* | |
C7 | 0.0548 (14) | 0.1034 (2) | 0.1558 (9) | 0.097 (3) | |
H7 | −0.0502 | 0.1228 | 0.0966 | 0.116* | |
C8 | 0.0706 (13) | 0.2614 (2) | 0.1746 (8) | 0.0627 (17) | |
C9 | −0.1756 (12) | 0.24969 (16) | 0.0768 (8) | 0.083 (2) | |
H9A | −0.1467 | 0.2240 | 0.0190 | 0.124* | |
H9B | −0.2230 | 0.2722 | 0.0030 | 0.124* | |
H9C | −0.3161 | 0.2453 | 0.1453 | 0.124* | |
C10 | 0.1404 (12) | 0.30593 (19) | 0.2013 (8) | 0.0571 (17) | |
C11 | 0.3468 (14) | 0.3164 (2) | 0.3061 (9) | 0.088 (2) | |
H11 | 0.4385 | 0.2948 | 0.3619 | 0.106* | |
C12 | 0.4259 (13) | 0.3580 (2) | 0.3330 (8) | 0.090 (2) | |
H12 | 0.5711 | 0.3639 | 0.4040 | 0.108* | |
C13 | 0.2931 (16) | 0.39022 (19) | 0.2566 (9) | 0.0744 (19) | |
C14 | 0.0872 (14) | 0.3808 (2) | 0.1543 (9) | 0.083 (2) | |
H14 | −0.0043 | 0.4027 | 0.0999 | 0.100* | |
C15 | 0.0069 (12) | 0.3392 (2) | 0.1273 (7) | 0.077 (2) | |
H15 | −0.1404 | 0.3337 | 0.0576 | 0.093* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.046 (3) | 0.067 (4) | 0.079 (4) | 0.003 (3) | −0.015 (3) | −0.008 (3) |
N2 | 0.055 (4) | 0.070 (4) | 0.060 (3) | 0.001 (3) | −0.010 (3) | 0.001 (3) |
O1 | 0.063 (3) | 0.077 (3) | 0.100 (4) | 0.000 (2) | −0.009 (3) | 0.002 (2) |
Cl1 | 0.1365 (18) | 0.0779 (13) | 0.147 (2) | −0.0169 (12) | −0.0117 (16) | −0.0044 (13) |
C1 | 0.062 (5) | 0.072 (5) | 0.066 (5) | 0.001 (5) | 0.007 (5) | −0.001 (4) |
C2 | 0.051 (5) | 0.060 (5) | 0.106 (6) | 0.002 (4) | 0.007 (5) | −0.006 (4) |
C3 | 0.099 (6) | 0.081 (5) | 0.088 (6) | 0.012 (5) | −0.016 (5) | −0.008 (5) |
C4 | 0.142 (9) | 0.064 (6) | 0.138 (8) | 0.013 (6) | −0.001 (7) | 0.009 (5) |
C5 | 0.109 (8) | 0.072 (6) | 0.208 (12) | −0.015 (6) | 0.043 (8) | −0.014 (7) |
C6 | 0.098 (7) | 0.089 (7) | 0.201 (11) | −0.007 (6) | −0.003 (7) | −0.030 (7) |
C7 | 0.056 (5) | 0.078 (5) | 0.155 (8) | 0.011 (4) | −0.007 (5) | −0.029 (5) |
C8 | 0.039 (4) | 0.076 (5) | 0.071 (5) | 0.002 (4) | −0.009 (4) | −0.003 (4) |
C9 | 0.071 (5) | 0.079 (4) | 0.096 (6) | −0.004 (4) | −0.009 (5) | 0.014 (4) |
C10 | 0.033 (4) | 0.066 (5) | 0.070 (5) | 0.001 (3) | −0.002 (4) | −0.007 (4) |
C11 | 0.087 (6) | 0.061 (5) | 0.112 (6) | 0.011 (4) | −0.019 (5) | 0.001 (4) |
C12 | 0.085 (5) | 0.087 (5) | 0.092 (6) | 0.005 (5) | −0.035 (5) | −0.016 (5) |
C13 | 0.066 (5) | 0.068 (5) | 0.090 (5) | −0.006 (4) | 0.010 (5) | 0.006 (4) |
C14 | 0.073 (5) | 0.069 (5) | 0.105 (6) | −0.006 (4) | −0.010 (5) | 0.027 (4) |
C15 | 0.065 (5) | 0.069 (5) | 0.094 (6) | 0.004 (4) | −0.016 (4) | 0.008 (4) |
N1—C1 | 1.326 (6) | C7—H7 | 0.9300 |
N1—N2 | 1.388 (5) | C8—C10 | 1.458 (7) |
N1—H1 | 0.8600 | C8—C9 | 1.488 (8) |
N2—C8 | 1.266 (6) | C9—H9A | 0.9600 |
O1—C1 | 1.248 (6) | C9—H9B | 0.9600 |
Cl1—C13 | 1.717 (6) | C9—H9C | 0.9600 |
C1—C2 | 1.468 (7) | C10—C11 | 1.357 (7) |
C2—C7 | 1.341 (8) | C10—C15 | 1.369 (7) |
C2—C3 | 1.368 (8) | C11—C12 | 1.382 (7) |
C3—C4 | 1.374 (9) | C11—H11 | 0.9300 |
C3—H3 | 0.9300 | C12—C13 | 1.351 (8) |
C4—C5 | 1.357 (9) | C12—H12 | 0.9300 |
C4—H4 | 0.9300 | C13—C14 | 1.335 (8) |
C5—C6 | 1.350 (10) | C14—C15 | 1.383 (7) |
C5—H5 | 0.9300 | C14—H14 | 0.9300 |
C6—C7 | 1.385 (8) | C15—H15 | 0.9300 |
C6—H6 | 0.9300 | ||
C1—N1—N2 | 119.4 (5) | N2—C8—C9 | 123.3 (6) |
C1—N1—H1 | 120.3 | C10—C8—C9 | 120.4 (6) |
N2—N1—H1 | 120.3 | C8—C9—H9A | 109.5 |
C8—N2—N1 | 118.2 (5) | C8—C9—H9B | 109.5 |
O1—C1—N1 | 121.7 (6) | H9A—C9—H9B | 109.5 |
O1—C1—C2 | 120.1 (6) | C8—C9—H9C | 109.5 |
N1—C1—C2 | 118.1 (6) | H9A—C9—H9C | 109.5 |
C7—C2—C3 | 117.9 (6) | H9B—C9—H9C | 109.5 |
C7—C2—C1 | 123.2 (7) | C11—C10—C15 | 116.1 (6) |
C3—C2—C1 | 118.8 (7) | C11—C10—C8 | 120.0 (6) |
C2—C3—C4 | 120.1 (7) | C15—C10—C8 | 123.9 (6) |
C2—C3—H3 | 120.0 | C10—C11—C12 | 122.4 (6) |
C4—C3—H3 | 120.0 | C10—C11—H11 | 118.8 |
C5—C4—C3 | 122.3 (8) | C12—C11—H11 | 118.8 |
C5—C4—H4 | 118.9 | C13—C12—C11 | 120.2 (6) |
C3—C4—H4 | 118.9 | C13—C12—H12 | 119.9 |
C6—C5—C4 | 116.9 (9) | C11—C12—H12 | 119.9 |
C6—C5—H5 | 121.5 | C14—C13—C12 | 118.6 (6) |
C4—C5—H5 | 121.5 | C14—C13—Cl1 | 121.3 (6) |
C5—C6—C7 | 121.4 (9) | C12—C13—Cl1 | 120.1 (7) |
C5—C6—H6 | 119.3 | C13—C14—C15 | 121.4 (6) |
C7—C6—H6 | 119.3 | C13—C14—H14 | 119.3 |
C2—C7—C6 | 121.3 (7) | C15—C14—H14 | 119.3 |
C2—C7—H7 | 119.4 | C10—C15—C14 | 121.2 (6) |
C6—C7—H7 | 119.4 | C10—C15—H15 | 119.4 |
N2—C8—C10 | 116.3 (6) | C14—C15—H15 | 119.4 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.32 | 3.067 (6) | 145 |
C9—H9C···N2i | 0.96 | 2.53 | 3.452 (8) | 162 |
C15—H15···O1ii | 0.93 | 2.61 | 3.483 (7) | 157 |
Symmetry codes: (i) x−1, y, z; (ii) x−1, −y+1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C15H13ClN2O |
Mr | 272.72 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 5.0714 (6), 31.430 (3), 8.4128 (7) |
β (°) | 94.388 (1) |
V (Å3) | 1337.0 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.28 |
Crystal size (mm) | 0.40 × 0.30 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-etector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.897, 0.967 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6717, 2322, 711 |
Rint | 0.156 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.089, 0.205, 1.01 |
No. of reflections | 2322 |
No. of parameters | 173 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.31, −0.24 |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.32 | 3.067 (6) | 145.4 |
C9—H9C···N2i | 0.96 | 2.53 | 3.452 (8) | 161.5 |
C15—H15···O1ii | 0.93 | 2.61 | 3.483 (7) | 157.0 |
Symmetry codes: (i) x−1, y, z; (ii) x−1, −y+1/2, z−1/2. |
Acknowledgements
The authors acknowledge financial support from Liaocheng 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.
Schiff bases have various applications in the study of biological processes and in pharmacology (Chavan et al., 2011; Ray et al., 2011). We report here the crystal structure of the title Schiff base compound (I).
In (I) (Fig. 1), the bond lengths and angles are normal and comparable to the values observed in similar compounds (Nie, 2008; Fun et al., 2008). The C═N (C8═N2) bond length in the molecule is 1.270 (7) Å showing the double-bond character. Meanwhile, the dihedral angle between the benzene rings C2–C7 and C10–C15 is 5.48 (4)°.
In the crystal stucture, intermolecular N—H···O hydrogen bonds (Table 1) link the molecules related by translation along axis a into chains, which are further aggregated into layers parallel to ac plane through the weak C—H···O(N) interactions (Table 1).