organic compounds
(E)-N′-(4-Chlorobenzylidene)-2-methoxybenzohydrazide
aAtta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor D. E. Malaysia, bFaculty of Applied Science, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor D. E. Malaysia, cDepartment of Pharmacology and Chemistry, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Puncak Alam, Selangor D. E., Malaysia, and dH.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
*Correspondence e-mail: dr.sammer.yousuf@gmail.com
In the title hydrazone derivative, C15H13ClN2O2, the dihedral angle between the benzene rings is 2.36 (2)°. An intramolecular N—H⋯O hydrogen bond is present. In the crystal, N—H⋯O and C—H⋯O hydrogen bonds link the molecules into chains running parallel to the b axis.
Related literature
For applications and biological activity of hydrazone derivatives, see: Khan et al. (2011, 2012); Kūçūkgūzel et al. (1999); Patel et al. (1984); Wilder (1967); Glasser & Doughty (1962). For a related structure, see: Cao (2009).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); 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, PARST (Nardelli, 1995) and PLATON (Spek, 2009).
Supporting information
10.1107/S160053681300175X/rz5038sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053681300175X/rz5038Isup2.hkl
Supporting information file. DOI: 10.1107/S160053681300175X/rz5038Isup3.cml
The title compound was synthesized by refluxing in methanol a mixture of 2-methoxybenzohydrazide (0.332 g, 2 mmol), 4-chlorobenzaldehyde (0.281 g, 2 mmol) and a catalytical amount of acetic acid for 3 h. The progress of reaction was monitored by TLC. After completion of the reaction, the solvent was evaporated by vacuum to afford the crude product which was further recrystallized in methanol to obtain colourless crystals (0.467 g, 81% yield). All chemicals were purchased by sigma Aldrich, Germany.
H atoms on methyl, phenyl and methine carbon atoms were positioned geometrically with C—H = 0.96 (CH3) and 0.93 Å (CH) and constrained to ride on their parent atoms with Uiso(H) = 1.5Ueq(CH3) or 1.2Ueq(CH). The H atoms on the nitrogen (N–H = 0.76 (2) Å) and oxygen (O–H = 0.84 (2)–0.93 (2) Å) atoms were located in a difference Fourier map and refined isotropically. A rotating group model was applied to the methyl group.
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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), PARST (Nardelli, 1995) and PLATON (Spek, 2009).C15H13ClN2O2 | F(000) = 1200 |
Mr = 288.72 | Dx = 1.311 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 3504 reflections |
a = 12.5830 (7) Å | θ = 2.4–24.1° |
b = 9.8335 (5) Å | µ = 0.26 mm−1 |
c = 23.6377 (13) Å | T = 273 K |
V = 2924.8 (3) Å3 | Block, colourless |
Z = 8 | 0.48 × 0.27 × 0.10 mm |
Bruker SMART APEX CCD area-detector diffractometer | 2713 independent reflections |
Radiation source: fine-focus sealed tube | 2021 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
ω scan | θmax = 25.5°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −14→15 |
Tmin = 0.884, Tmax = 0.974 | k = −11→11 |
16194 measured reflections | l = −28→28 |
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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0533P)2 + 0.7724P] where P = (Fo2 + 2Fc2)/3 |
2713 reflections | (Δ/σ)max = 0.001 |
186 parameters | Δρmax = 0.32 e Å−3 |
0 restraints | Δρmin = −0.35 e Å−3 |
C15H13ClN2O2 | V = 2924.8 (3) Å3 |
Mr = 288.72 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 12.5830 (7) Å | µ = 0.26 mm−1 |
b = 9.8335 (5) Å | T = 273 K |
c = 23.6377 (13) Å | 0.48 × 0.27 × 0.10 mm |
Bruker SMART APEX CCD area-detector diffractometer | 2713 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 2021 reflections with I > 2σ(I) |
Tmin = 0.884, Tmax = 0.974 | Rint = 0.030 |
16194 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | Δρmax = 0.32 e Å−3 |
2713 reflections | Δρmin = −0.35 e Å−3 |
186 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 | ||
Cl1 | 0.01370 (6) | 0.06519 (7) | 0.64198 (3) | 0.0891 (3) | |
O1 | 0.18055 (13) | 0.53482 (16) | 0.95365 (6) | 0.0713 (4) | |
O2 | 0.43399 (11) | 0.28997 (14) | 0.99795 (6) | 0.0659 (4) | |
N1 | 0.27223 (15) | 0.3462 (2) | 0.93138 (7) | 0.0582 (5) | |
H1A | 0.3141 (16) | 0.295 (2) | 0.9402 (8) | 0.048 (6)* | |
N2 | 0.21338 (13) | 0.32469 (18) | 0.88327 (7) | 0.0578 (5) | |
C1 | 0.2839 (2) | 0.5735 (2) | 1.05402 (9) | 0.0710 (6) | |
H1B | 0.2255 | 0.6267 | 1.0443 | 0.085* | |
C2 | 0.3375 (2) | 0.5997 (3) | 1.10386 (11) | 0.0896 (8) | |
H2B | 0.3155 | 0.6702 | 1.1274 | 0.108* | |
C3 | 0.4228 (3) | 0.5217 (4) | 1.11831 (11) | 0.0981 (9) | |
H3A | 0.4587 | 0.5393 | 1.1519 | 0.118* | |
C4 | 0.4567 (2) | 0.4175 (3) | 1.08405 (10) | 0.0800 (7) | |
H4A | 0.5150 | 0.3652 | 1.0945 | 0.096* | |
C5 | 0.40351 (16) | 0.3906 (2) | 1.03376 (8) | 0.0562 (5) | |
C6 | 0.31540 (16) | 0.4690 (2) | 1.01800 (8) | 0.0536 (5) | |
C7 | 0.25085 (17) | 0.4537 (2) | 0.96504 (8) | 0.0532 (5) | |
C8 | 0.23811 (16) | 0.2194 (2) | 0.85504 (8) | 0.0607 (6) | |
H8A | 0.2935 | 0.1645 | 0.8675 | 0.073* | |
C9 | 0.18113 (16) | 0.1828 (2) | 0.80327 (8) | 0.0567 (5) | |
C10 | 0.09208 (18) | 0.2521 (2) | 0.78495 (9) | 0.0645 (6) | |
H10A | 0.0663 | 0.3246 | 0.8062 | 0.077* | |
C11 | 0.04081 (19) | 0.2156 (2) | 0.73582 (9) | 0.0678 (6) | |
H11A | −0.0191 | 0.2632 | 0.7240 | 0.081* | |
C12 | 0.07826 (18) | 0.1091 (2) | 0.70448 (8) | 0.0645 (6) | |
C13 | 0.1646 (2) | 0.0373 (3) | 0.72182 (11) | 0.0889 (8) | |
H13A | 0.1889 | −0.0359 | 0.7006 | 0.107* | |
C14 | 0.2162 (2) | 0.0741 (3) | 0.77145 (11) | 0.0843 (8) | |
H14A | 0.2751 | 0.0247 | 0.7834 | 0.101* | |
C15 | 0.51850 (19) | 0.2009 (2) | 1.01362 (11) | 0.0751 (7) | |
H15A | 0.5257 | 0.1307 | 0.9857 | 0.113* | |
H15B | 0.5031 | 0.1606 | 1.0497 | 0.113* | |
H15C | 0.5836 | 0.2515 | 1.0160 | 0.113* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1105 (6) | 0.0983 (6) | 0.0586 (4) | −0.0205 (4) | −0.0205 (3) | −0.0091 (3) |
O1 | 0.0817 (11) | 0.0609 (10) | 0.0711 (10) | 0.0121 (8) | −0.0116 (8) | 0.0011 (7) |
O2 | 0.0701 (9) | 0.0635 (10) | 0.0640 (9) | 0.0090 (7) | −0.0198 (7) | −0.0044 (8) |
N1 | 0.0554 (11) | 0.0685 (12) | 0.0506 (10) | 0.0102 (10) | −0.0114 (8) | −0.0033 (9) |
N2 | 0.0566 (10) | 0.0696 (12) | 0.0472 (9) | 0.0031 (8) | −0.0080 (7) | −0.0016 (8) |
C1 | 0.0811 (16) | 0.0689 (15) | 0.0631 (13) | −0.0042 (12) | 0.0063 (11) | −0.0067 (11) |
C2 | 0.109 (2) | 0.092 (2) | 0.0677 (15) | −0.0094 (17) | 0.0051 (15) | −0.0277 (14) |
C3 | 0.109 (2) | 0.122 (2) | 0.0634 (16) | −0.011 (2) | −0.0229 (15) | −0.0227 (17) |
C4 | 0.0838 (16) | 0.0930 (19) | 0.0632 (14) | −0.0032 (14) | −0.0199 (12) | −0.0054 (13) |
C5 | 0.0597 (12) | 0.0579 (13) | 0.0510 (11) | −0.0119 (10) | −0.0057 (9) | 0.0025 (10) |
C6 | 0.0600 (12) | 0.0528 (12) | 0.0481 (10) | −0.0093 (10) | 0.0017 (9) | 0.0026 (9) |
C7 | 0.0565 (12) | 0.0529 (12) | 0.0501 (11) | −0.0034 (10) | 0.0005 (9) | 0.0048 (9) |
C8 | 0.0565 (12) | 0.0751 (15) | 0.0504 (11) | 0.0103 (11) | −0.0054 (9) | 0.0000 (11) |
C9 | 0.0601 (12) | 0.0651 (13) | 0.0449 (10) | 0.0040 (10) | −0.0014 (9) | 0.0003 (9) |
C10 | 0.0707 (14) | 0.0663 (14) | 0.0564 (12) | 0.0058 (11) | −0.0077 (10) | −0.0072 (10) |
C11 | 0.0705 (14) | 0.0718 (15) | 0.0610 (13) | 0.0018 (12) | −0.0149 (11) | 0.0016 (11) |
C12 | 0.0735 (14) | 0.0731 (15) | 0.0468 (11) | −0.0122 (12) | −0.0056 (10) | 0.0004 (10) |
C13 | 0.1018 (19) | 0.095 (2) | 0.0701 (15) | 0.0180 (16) | −0.0084 (14) | −0.0314 (14) |
C14 | 0.0852 (17) | 0.097 (2) | 0.0708 (15) | 0.0272 (15) | −0.0162 (13) | −0.0182 (14) |
C15 | 0.0708 (15) | 0.0766 (17) | 0.0778 (16) | 0.0116 (12) | −0.0149 (12) | 0.0070 (13) |
Cl1—C12 | 1.740 (2) | C5—C6 | 1.401 (3) |
O1—C7 | 1.221 (2) | C6—C7 | 1.500 (3) |
O2—C5 | 1.357 (2) | C8—C9 | 1.463 (3) |
O2—C15 | 1.427 (2) | C8—H8A | 0.9300 |
N1—C7 | 1.350 (3) | C9—C14 | 1.380 (3) |
N1—N2 | 1.374 (2) | C9—C10 | 1.381 (3) |
N1—H1A | 0.76 (2) | C10—C11 | 1.376 (3) |
N2—C8 | 1.270 (3) | C10—H10A | 0.9300 |
C1—C2 | 1.382 (3) | C11—C12 | 1.366 (3) |
C1—C6 | 1.392 (3) | C11—H11A | 0.9300 |
C1—H1B | 0.9300 | C12—C13 | 1.359 (3) |
C2—C3 | 1.363 (4) | C13—C14 | 1.389 (3) |
C2—H2B | 0.9300 | C13—H13A | 0.9300 |
C3—C4 | 1.374 (4) | C14—H14A | 0.9300 |
C3—H3A | 0.9300 | C15—H15A | 0.9600 |
C4—C5 | 1.390 (3) | C15—H15B | 0.9600 |
C4—H4A | 0.9300 | C15—H15C | 0.9600 |
C5—O2—C15 | 119.75 (16) | N2—C8—H8A | 119.3 |
C7—N1—N2 | 120.07 (19) | C9—C8—H8A | 119.3 |
C7—N1—H1A | 119.8 (16) | C14—C9—C10 | 118.1 (2) |
N2—N1—H1A | 119.9 (16) | C14—C9—C8 | 119.3 (2) |
C8—N2—N1 | 115.37 (18) | C10—C9—C8 | 122.58 (19) |
C2—C1—C6 | 121.3 (2) | C11—C10—C9 | 121.1 (2) |
C2—C1—H1B | 119.3 | C11—C10—H10A | 119.5 |
C6—C1—H1B | 119.3 | C9—C10—H10A | 119.5 |
C3—C2—C1 | 119.5 (3) | C12—C11—C10 | 119.7 (2) |
C3—C2—H2B | 120.2 | C12—C11—H11A | 120.1 |
C1—C2—H2B | 120.2 | C10—C11—H11A | 120.1 |
C2—C3—C4 | 121.1 (2) | C13—C12—C11 | 120.7 (2) |
C2—C3—H3A | 119.5 | C13—C12—Cl1 | 120.00 (19) |
C4—C3—H3A | 119.5 | C11—C12—Cl1 | 119.31 (18) |
C3—C4—C5 | 119.8 (3) | C12—C13—C14 | 119.6 (2) |
C3—C4—H4A | 120.1 | C12—C13—H13A | 120.2 |
C5—C4—H4A | 120.1 | C14—C13—H13A | 120.2 |
O2—C5—C4 | 122.5 (2) | C9—C14—C13 | 120.8 (2) |
O2—C5—C6 | 117.33 (17) | C9—C14—H14A | 119.6 |
C4—C5—C6 | 120.2 (2) | C13—C14—H14A | 119.6 |
C1—C6—C5 | 118.0 (2) | O2—C15—H15A | 109.5 |
C1—C6—C7 | 115.5 (2) | O2—C15—H15B | 109.5 |
C5—C6—C7 | 126.51 (19) | H15A—C15—H15B | 109.5 |
O1—C7—N1 | 121.7 (2) | O2—C15—H15C | 109.5 |
O1—C7—C6 | 120.70 (19) | H15A—C15—H15C | 109.5 |
N1—C7—C6 | 117.56 (19) | H15B—C15—H15C | 109.5 |
N2—C8—C9 | 121.32 (19) | ||
C7—N1—N2—C8 | −178.62 (19) | C5—C6—C7—O1 | −174.3 (2) |
C6—C1—C2—C3 | −0.2 (4) | C1—C6—C7—N1 | −174.05 (19) |
C1—C2—C3—C4 | 0.2 (5) | C5—C6—C7—N1 | 6.8 (3) |
C2—C3—C4—C5 | 0.0 (4) | N1—N2—C8—C9 | 179.13 (18) |
C15—O2—C5—C4 | 4.9 (3) | N2—C8—C9—C14 | 174.7 (2) |
C15—O2—C5—C6 | −175.69 (19) | N2—C8—C9—C10 | −6.1 (3) |
C3—C4—C5—O2 | 179.3 (2) | C14—C9—C10—C11 | −1.2 (3) |
C3—C4—C5—C6 | −0.2 (4) | C8—C9—C10—C11 | 179.5 (2) |
C2—C1—C6—C5 | 0.1 (3) | C9—C10—C11—C12 | 0.0 (4) |
C2—C1—C6—C7 | −179.1 (2) | C10—C11—C12—C13 | 1.1 (4) |
O2—C5—C6—C1 | −179.35 (18) | C10—C11—C12—Cl1 | −179.24 (18) |
C4—C5—C6—C1 | 0.1 (3) | C11—C12—C13—C14 | −1.0 (4) |
O2—C5—C6—C7 | −0.2 (3) | Cl1—C12—C13—C14 | 179.3 (2) |
C4—C5—C6—C7 | 179.2 (2) | C10—C9—C14—C13 | 1.3 (4) |
N2—N1—C7—O1 | −0.9 (3) | C8—C9—C14—C13 | −179.4 (2) |
N2—N1—C7—C6 | 177.96 (17) | C12—C13—C14—C9 | −0.2 (4) |
C1—C6—C7—O1 | 4.8 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2 | 0.76 (2) | 2.04 (2) | 2.632 (2) | 135.7 (19) |
N1—H1A···O1i | 0.76 (2) | 2.58 (2) | 3.163 (3) | 135.5 (19) |
C8—H8A···O1i | 0.93 | 2.42 | 3.127 (3) | 132 |
Symmetry code: (i) −x+1/2, y−1/2, z. |
Experimental details
Crystal data | |
Chemical formula | C15H13ClN2O2 |
Mr | 288.72 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 273 |
a, b, c (Å) | 12.5830 (7), 9.8335 (5), 23.6377 (13) |
V (Å3) | 2924.8 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.26 |
Crystal size (mm) | 0.48 × 0.27 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.884, 0.974 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16194, 2713, 2021 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.124, 1.06 |
No. of reflections | 2713 |
No. of parameters | 186 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.32, −0.35 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), PARST (Nardelli, 1995) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2 | 0.76 (2) | 2.04 (2) | 2.632 (2) | 135.7 (19) |
N1—H1A···O1i | 0.76 (2) | 2.58 (2) | 3.163 (3) | 135.5 (19) |
C8—H8A···O1i | 0.9300 | 2.4200 | 3.127 (3) | 132.3 |
Symmetry code: (i) −x+1/2, y−1/2, z. |
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.
Organic compounds based on the hydrazone moiety are well known due to their wide range of applications both in structural and medicinal chemistry (Khan et al., 2011, 2012; Kūçūkgūzel et al., 1999; Patel et al., 1984; Wilder, 1967; Glasser & Doughty, 1962). The title compound is a hydrazone derivative synthesized in order to evaluate its biological activities.
The structure of title compound (Fig. 1) is similar to that of the previously published compound (E)-N'-(2-chlorobenzylidene)-2-methoxybenzohydrazide (Cao, 2009) with the difference that the 2-chlorobenzene ring is replaced by a 4-chlorobenzene ring (C9–19 C14). The bond lengths and angles were found to be similar to those observed in the structurally related phenyl hydrazone (Cao, 2009). The azomethine double bond adopts an E configuration (C═N, 1.270 (3) Å). The molecular conformation is stablized by an intramolecular N1—H1A···O2 hydrogen bond (Table 1) to generate an S6 graph set ring motif. N1—H1A···O1 and C8—H8A···O1 hydrogen bonds play important roles in stabilizing the crystal structure by forming chains running parallel to the b axis (Fig. 2).