organic compounds
4-Chloro-N′-(2-hydroxy-4-methoxybenzylidene)benzohydrazide methanol monosolvate
aThird Affiliated Hospital of Suzhou University, Changzhou 213000, People's Republic of China
*Correspondence e-mail: yangyilin_szu@126.com
The title compound, C15H13ClN2O3·CH3OH, was synthesized by the condensation reaction of 2-hydroxy-4-methoxybenzaldehyde with 4-chlorobenzohydrazide in methanol. The Schiff base molecule displays a trans configuration with respect to the C=N and C—N bonds. The dihedral angle between the two benzene rings is 5.3 (2)°. In the crystal, molecules are linked by N—H⋯O and O—H⋯O hydrogen-bond interactions into chains running parallel to the a axis. An intramolecular O—H⋯N hydrogen bond is observed.
Related literature
For background to Schiff base compounds, see: Fan et al. (2007); Kim et al. (2005); Nimitsiriwat et al. (2004). For their biological activity, see: Chen et al. (1997); Ren et al. (2002). For related structures, see: Mohd Lair et al. (2009); Fun et al. (2008); Yang (2008); Zhi (2008, 2009); Zhi & Yang (2007).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); 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/S1600536811039778/rz2644sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811039778/rz2644Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811039778/rz2644Isup3.cml
2-Hydroxy-4-methoxybenzaldehyde (0.01 mol, 1.52 g) and 4-chlorobenzohydrazide (0.01 mol, 1.71 g) were dissolved in methanol (50 ml). The mixture was stirred at room temperature to give a clear colourless solution. Crystals of the title compound were formed by slow evaporation of the solvent for several days at room temperature.
Atom H2 was located in a difference Fourier map and refined with the N—H distance restrained to 0.90 (1) Å. All other H atoms were positioned geometrically [C—H = 0.93–0.96 Å, O—H = 0.82 Å] and refined using a riding model, with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(O, C) for hydroxy and methyl H atoms.
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); 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).C15H13ClN2O3·CH4O | Z = 2 |
Mr = 336.77 | F(000) = 352 |
Triclinic, P1 | Dx = 1.348 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.570 (2) Å | Cell parameters from 1241 reflections |
b = 10.343 (3) Å | θ = 2.3–24.5° |
c = 12.707 (3) Å | µ = 0.25 mm−1 |
α = 100.371 (2)° | T = 298 K |
β = 91.864 (2)° | Block, colorless |
γ = 101.663 (2)° | 0.17 × 0.13 × 0.12 mm |
V = 829.7 (4) Å3 |
Bruker SMART 1000 CCD area-detector diffractometer | 3022 independent reflections |
Radiation source: fine-focus sealed tube | 1724 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.038 |
ω scans | θmax = 25.5°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −7→7 |
Tmin = 0.959, Tmax = 0.971 | k = −12→12 |
5945 measured reflections | l = −15→13 |
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)] = 0.051 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.144 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0633P)2] where P = (Fo2 + 2Fc2)/3 |
3022 reflections | (Δ/σ)max < 0.001 |
216 parameters | Δρmax = 0.23 e Å−3 |
1 restraint | Δρmin = −0.17 e Å−3 |
C15H13ClN2O3·CH4O | γ = 101.663 (2)° |
Mr = 336.77 | V = 829.7 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.570 (2) Å | Mo Kα radiation |
b = 10.343 (3) Å | µ = 0.25 mm−1 |
c = 12.707 (3) Å | T = 298 K |
α = 100.371 (2)° | 0.17 × 0.13 × 0.12 mm |
β = 91.864 (2)° |
Bruker SMART 1000 CCD area-detector diffractometer | 3022 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1724 reflections with I > 2σ(I) |
Tmin = 0.959, Tmax = 0.971 | Rint = 0.038 |
5945 measured reflections |
R[F2 > 2σ(F2)] = 0.051 | 1 restraint |
wR(F2) = 0.144 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.23 e Å−3 |
3022 reflections | Δρmin = −0.17 e Å−3 |
216 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 | 0.45941 (17) | 1.34163 (8) | 0.04723 (7) | 0.1057 (4) | |
N1 | 0.6218 (3) | 0.69152 (19) | 0.29276 (16) | 0.0550 (6) | |
N2 | 0.5628 (3) | 0.7970 (2) | 0.25424 (18) | 0.0544 (6) | |
O1 | 0.8829 (3) | 0.55918 (18) | 0.37185 (18) | 0.0764 (6) | |
H1 | 0.8513 | 0.6186 | 0.3438 | 0.115* | |
O2 | 0.8950 (3) | 0.91058 (17) | 0.25849 (18) | 0.0853 (7) | |
O3 | 0.5767 (3) | 0.14043 (16) | 0.46539 (16) | 0.0715 (6) | |
O4 | 0.1182 (3) | 0.72464 (19) | 0.20964 (17) | 0.0731 (6) | |
H4 | 0.0462 | 0.7810 | 0.2227 | 0.110* | |
C1 | 0.5106 (4) | 0.4800 (2) | 0.34710 (19) | 0.0485 (6) | |
C2 | 0.7089 (4) | 0.4662 (2) | 0.3793 (2) | 0.0506 (6) | |
C3 | 0.7361 (4) | 0.3544 (2) | 0.42035 (19) | 0.0528 (7) | |
H3 | 0.8687 | 0.3472 | 0.4431 | 0.063* | |
C4 | 0.5660 (4) | 0.2544 (2) | 0.4272 (2) | 0.0533 (7) | |
C5 | 0.3685 (4) | 0.2649 (3) | 0.3942 (2) | 0.0652 (8) | |
H5 | 0.2542 | 0.1964 | 0.3976 | 0.078* | |
C6 | 0.3423 (4) | 0.3768 (3) | 0.3565 (2) | 0.0634 (8) | |
H6 | 0.2084 | 0.3845 | 0.3366 | 0.076* | |
C7 | 0.4739 (4) | 0.5964 (2) | 0.30752 (19) | 0.0538 (7) | |
H7 | 0.3371 | 0.6024 | 0.2921 | 0.065* | |
C8 | 0.7072 (4) | 0.9011 (2) | 0.2375 (2) | 0.0565 (7) | |
C9 | 0.6350 (4) | 1.0083 (2) | 0.1913 (2) | 0.0526 (7) | |
C10 | 0.7810 (5) | 1.1221 (3) | 0.1836 (2) | 0.0669 (8) | |
H10 | 0.9185 | 1.1298 | 0.2084 | 0.080* | |
C11 | 0.7275 (5) | 1.2247 (3) | 0.1399 (2) | 0.0759 (9) | |
H11 | 0.8277 | 1.3008 | 0.1355 | 0.091* | |
C12 | 0.5255 (5) | 1.2130 (3) | 0.1031 (2) | 0.0680 (8) | |
C13 | 0.3780 (5) | 1.1019 (3) | 0.1095 (2) | 0.0761 (9) | |
H13 | 0.2408 | 1.0951 | 0.0846 | 0.091* | |
C14 | 0.4322 (4) | 0.9993 (3) | 0.1531 (2) | 0.0699 (8) | |
H14 | 0.3311 | 0.9233 | 0.1567 | 0.084* | |
C15 | 0.7748 (4) | 0.1250 (3) | 0.5037 (3) | 0.0789 (9) | |
H15A | 0.8623 | 0.1154 | 0.4449 | 0.118* | |
H15B | 0.7574 | 0.0465 | 0.5356 | 0.118* | |
H15C | 0.8382 | 0.2028 | 0.5563 | 0.118* | |
C16 | 0.0297 (6) | 0.6290 (4) | 0.1191 (3) | 0.1093 (12) | |
H16A | 0.0040 | 0.6737 | 0.0616 | 0.164* | |
H16B | −0.0994 | 0.5770 | 0.1358 | 0.164* | |
H16C | 0.1236 | 0.5706 | 0.0978 | 0.164* | |
H2 | 0.4259 (18) | 0.792 (3) | 0.240 (2) | 0.085 (10)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1478 (9) | 0.0832 (6) | 0.1065 (7) | 0.0441 (6) | 0.0043 (6) | 0.0498 (5) |
N1 | 0.0538 (13) | 0.0482 (12) | 0.0692 (14) | 0.0191 (11) | −0.0014 (11) | 0.0188 (10) |
N2 | 0.0448 (13) | 0.0522 (12) | 0.0731 (15) | 0.0169 (11) | −0.0001 (11) | 0.0227 (11) |
O1 | 0.0478 (11) | 0.0667 (12) | 0.1210 (17) | −0.0033 (9) | −0.0109 (11) | 0.0546 (11) |
O2 | 0.0489 (12) | 0.0643 (12) | 0.148 (2) | 0.0151 (10) | −0.0058 (12) | 0.0321 (12) |
O3 | 0.0582 (12) | 0.0592 (11) | 0.1055 (15) | 0.0078 (9) | 0.0026 (11) | 0.0437 (10) |
O4 | 0.0475 (11) | 0.0716 (12) | 0.1049 (16) | 0.0173 (9) | −0.0006 (11) | 0.0252 (11) |
C1 | 0.0453 (15) | 0.0491 (13) | 0.0541 (16) | 0.0143 (12) | 0.0040 (12) | 0.0129 (12) |
C2 | 0.0464 (16) | 0.0455 (13) | 0.0609 (16) | 0.0059 (12) | 0.0044 (12) | 0.0169 (12) |
C3 | 0.0424 (15) | 0.0513 (14) | 0.0698 (18) | 0.0128 (12) | 0.0006 (13) | 0.0226 (12) |
C4 | 0.0535 (17) | 0.0463 (14) | 0.0641 (17) | 0.0096 (13) | 0.0067 (13) | 0.0217 (12) |
C5 | 0.0448 (16) | 0.0615 (16) | 0.093 (2) | 0.0056 (13) | 0.0075 (15) | 0.0307 (15) |
C6 | 0.0418 (15) | 0.0650 (17) | 0.089 (2) | 0.0121 (13) | 0.0052 (14) | 0.0290 (15) |
C7 | 0.0476 (16) | 0.0541 (15) | 0.0650 (18) | 0.0177 (13) | 0.0027 (13) | 0.0175 (13) |
C8 | 0.0472 (17) | 0.0488 (15) | 0.0755 (19) | 0.0152 (13) | 0.0041 (14) | 0.0113 (13) |
C9 | 0.0525 (16) | 0.0473 (14) | 0.0616 (17) | 0.0157 (12) | 0.0072 (13) | 0.0133 (12) |
C10 | 0.0622 (18) | 0.0604 (17) | 0.077 (2) | 0.0061 (15) | −0.0002 (15) | 0.0198 (15) |
C11 | 0.091 (2) | 0.0552 (17) | 0.081 (2) | 0.0040 (16) | 0.0001 (18) | 0.0276 (15) |
C12 | 0.096 (3) | 0.0573 (17) | 0.0602 (18) | 0.0267 (17) | 0.0105 (17) | 0.0236 (14) |
C13 | 0.0632 (19) | 0.080 (2) | 0.102 (2) | 0.0287 (16) | 0.0104 (17) | 0.0439 (18) |
C14 | 0.0574 (19) | 0.0624 (17) | 0.100 (2) | 0.0135 (14) | 0.0084 (16) | 0.0408 (16) |
C15 | 0.071 (2) | 0.0640 (17) | 0.110 (2) | 0.0128 (16) | −0.0042 (18) | 0.0434 (17) |
C16 | 0.090 (3) | 0.138 (3) | 0.095 (3) | 0.024 (2) | −0.001 (2) | 0.012 (2) |
Cl1—C12 | 1.736 (3) | C5—H5 | 0.9300 |
N1—C7 | 1.280 (3) | C6—H6 | 0.9300 |
N1—N2 | 1.390 (3) | C7—H7 | 0.9300 |
N2—C8 | 1.337 (3) | C8—C9 | 1.492 (3) |
N2—H2 | 0.901 (10) | C9—C10 | 1.380 (3) |
O1—C2 | 1.355 (3) | C9—C14 | 1.383 (4) |
O1—H1 | 0.8200 | C10—C11 | 1.382 (4) |
O2—C8 | 1.235 (3) | C10—H10 | 0.9300 |
O3—C4 | 1.366 (3) | C11—C12 | 1.367 (4) |
O3—C15 | 1.423 (3) | C11—H11 | 0.9300 |
O4—C16 | 1.398 (3) | C12—C13 | 1.362 (4) |
O4—H4 | 0.8200 | C13—C14 | 1.383 (4) |
C1—C2 | 1.395 (3) | C13—H13 | 0.9300 |
C1—C6 | 1.397 (3) | C14—H14 | 0.9300 |
C1—C7 | 1.445 (3) | C15—H15A | 0.9600 |
C2—C3 | 1.392 (3) | C15—H15B | 0.9600 |
C3—C4 | 1.378 (3) | C15—H15C | 0.9600 |
C3—H3 | 0.9300 | C16—H16A | 0.9600 |
C4—C5 | 1.382 (4) | C16—H16B | 0.9600 |
C5—C6 | 1.369 (3) | C16—H16C | 0.9600 |
C7—N1—N2 | 116.3 (2) | C10—C9—C14 | 117.9 (2) |
C8—N2—N1 | 120.2 (2) | C10—C9—C8 | 118.0 (2) |
C8—N2—H2 | 121.7 (18) | C14—C9—C8 | 124.1 (2) |
N1—N2—H2 | 118.1 (18) | C9—C10—C11 | 121.5 (3) |
C2—O1—H1 | 109.5 | C9—C10—H10 | 119.2 |
C4—O3—C15 | 118.4 (2) | C11—C10—H10 | 119.2 |
C16—O4—H4 | 109.5 | C12—C11—C10 | 119.2 (3) |
C2—C1—C6 | 117.5 (2) | C12—C11—H11 | 120.4 |
C2—C1—C7 | 122.8 (2) | C10—C11—H11 | 120.4 |
C6—C1—C7 | 119.7 (2) | C13—C12—C11 | 120.6 (3) |
O1—C2—C3 | 116.9 (2) | C13—C12—Cl1 | 120.3 (3) |
O1—C2—C1 | 122.3 (2) | C11—C12—Cl1 | 119.1 (2) |
C3—C2—C1 | 120.8 (2) | C12—C13—C14 | 120.0 (3) |
C4—C3—C2 | 119.7 (2) | C12—C13—H13 | 120.0 |
C4—C3—H3 | 120.1 | C14—C13—H13 | 120.0 |
C2—C3—H3 | 120.1 | C9—C14—C13 | 120.8 (3) |
O3—C4—C3 | 124.1 (2) | C9—C14—H14 | 119.6 |
O3—C4—C5 | 115.4 (2) | C13—C14—H14 | 119.6 |
C3—C4—C5 | 120.4 (2) | O3—C15—H15A | 109.5 |
C6—C5—C4 | 119.5 (2) | O3—C15—H15B | 109.5 |
C6—C5—H5 | 120.3 | H15A—C15—H15B | 109.5 |
C4—C5—H5 | 120.3 | O3—C15—H15C | 109.5 |
C5—C6—C1 | 122.0 (2) | H15A—C15—H15C | 109.5 |
C5—C6—H6 | 119.0 | H15B—C15—H15C | 109.5 |
C1—C6—H6 | 119.0 | O4—C16—H16A | 109.5 |
N1—C7—C1 | 122.7 (2) | O4—C16—H16B | 109.5 |
N1—C7—H7 | 118.6 | H16A—C16—H16B | 109.5 |
C1—C7—H7 | 118.6 | O4—C16—H16C | 109.5 |
O2—C8—N2 | 122.4 (2) | H16A—C16—H16C | 109.5 |
O2—C8—C9 | 119.8 (2) | H16B—C16—H16C | 109.5 |
N2—C8—C9 | 117.8 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4···O2i | 0.82 | 1.83 | 2.646 (3) | 177 |
N2—H2···O4 | 0.90 (1) | 2.00 (1) | 2.876 (3) | 163 (2) |
O1—H1···N1 | 0.82 | 1.96 | 2.676 (3) | 146 |
Symmetry code: (i) x−1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C15H13ClN2O3·CH4O |
Mr | 336.77 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 298 |
a, b, c (Å) | 6.570 (2), 10.343 (3), 12.707 (3) |
α, β, γ (°) | 100.371 (2), 91.864 (2), 101.663 (2) |
V (Å3) | 829.7 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.25 |
Crystal size (mm) | 0.17 × 0.13 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART 1000 CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.959, 0.971 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5945, 3022, 1724 |
Rint | 0.038 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.144, 1.01 |
No. of reflections | 3022 |
No. of parameters | 216 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.23, −0.17 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4···O2i | 0.82 | 1.83 | 2.646 (3) | 176.8 |
N2—H2···O4 | 0.901 (10) | 2.000 (13) | 2.876 (3) | 163 (2) |
O1—H1···N1 | 0.82 | 1.96 | 2.676 (3) | 145.5 |
Symmetry code: (i) x−1, y, z. |
Acknowledgements
Financial support from the Third Affiliated Hospital of Suzhou University is acknowledged.
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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.
In recent years, much attention has been focused on the synthesis, structures, and properties of Schiff base compounds (Fan et al., 2007; Kim et al., 2005; Nimitsiriwat et al., 2004). Some of the compounds have been found to have excellent pharmacological and antibacterial activity (Chen et al., 1997; Ren et al., 2002). We report herein the crystal structure of the title new Schiff base compound (Fig. 1) derived from the condensation reaction of 2-hydroxy-4-methoxybenzaldehyde with 4-chlorobenzohydrazide.
The asymmetric unit of the title compound contains a Schiff base molecule and a methanol molecule of crystallization. The Schiff base molecule displays a trans configuration with respect to the C═N and C–N bonds. There is an intramolecular O—H···N hydrogen bond in the molecule. The dihedral angle between the two benzene rings is 5.3 (2)°. All the bond lengths are within normal ranges and comparable to those in other similar compounds (Mohd Lair et al., 2009; Fun et al., 2008; Yang, 2008; Zhi, 2008; Zhi & Yang, 2007; Zhi, 2009). In the crystal (Fig. 2), molecules are linked by N—H···O and O—H···O hydrogen interactions into one-dimensional chains along the a axis (Table 1).