organic compounds
4-Methoxy-N′-(4-methoxybenzylidene)benzohydrazide
aCollege of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, People's Republic of China
*Correspondence e-mail: biyeqqhar@yahoo.com.cn
The title compound, C16H16N2O3, was prepared by the reaction of 4-methoxybenzaldehyde with 4-methoxybenzohydrazide in methanol. The dihedral angle between the two benzene rings is 3.1 (3)°. In the crystal, intermolecular N—H⋯O hydrogen bonds link the molecules into C(4) chains along the b axis.
Related literature
For the biological activity of hydrazone compounds, see: Peng (2011); Angelusiu et al. (2010); Ajani et al. (2010); Horiuchi et al. (2009). For related structures, see: Zhang (2011); Lei & Fu (2011); Tang (2011).
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/S1600536811014012/cv5072sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811014012/cv5072Isup2.hkl
Equimolar quantities (1.0 mmol each) of 4-methoxybenzaldehyde and 4-methoxybenzohydrazide were mixed in methanol. The mixture was stirred at room temperature for half an hour to give a colorless solution. After keeping the solution in air for a few days, colorless block-shaped crystals were formed.
Atom H2A attached to N2 was located on a difference map and refined isotropically, with the N–H distance restrained to 0.90 (1) Å. Other H atoms were placed in calculated positions and constrained to ride on their parent atoms with C–H distances of 0.93-0.96 Å, and with Uiso(H) set to 1.2Ueq(C) and 1.5Ueq(C8 and C16). In the absence of any significant anomalous scatterers in the molecule, 735 Friedel pairs were merged before the final refinement.
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).C16H16N2O3 | F(000) = 300 |
Mr = 284.31 | Dx = 1.339 Mg m−3 |
Monoclinic, Pc | Mo Kα radiation, λ = 0.71073 Å |
a = 10.617 (3) Å | Cell parameters from 1579 reflections |
b = 4.877 (2) Å | θ = 2.9–28.3° |
c = 13.632 (3) Å | µ = 0.09 mm−1 |
β = 92.409 (2)° | T = 298 K |
V = 705.2 (4) Å3 | Block, colourless |
Z = 2 | 0.20 × 0.18 × 0.17 mm |
Bruker SMART 1000 CCD area-detector diffractometer | 1396 independent reflections |
Radiation source: fine-focus sealed tube | 1026 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
ω scans | θmax = 26.5°, θmin = 3.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −13→11 |
Tmin = 0.982, Tmax = 0.984 | k = −6→6 |
3893 measured reflections | l = −16→17 |
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)] = 0.059 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.138 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.30 | w = 1/[σ2(Fo2) + (0.0182P)2 + 0.6212P] where P = (Fo2 + 2Fc2)/3 |
1396 reflections | (Δ/σ)max = 0.001 |
195 parameters | Δρmax = 0.24 e Å−3 |
3 restraints | Δρmin = −0.22 e Å−3 |
C16H16N2O3 | V = 705.2 (4) Å3 |
Mr = 284.31 | Z = 2 |
Monoclinic, Pc | Mo Kα radiation |
a = 10.617 (3) Å | µ = 0.09 mm−1 |
b = 4.877 (2) Å | T = 298 K |
c = 13.632 (3) Å | 0.20 × 0.18 × 0.17 mm |
β = 92.409 (2)° |
Bruker SMART 1000 CCD area-detector diffractometer | 1396 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1026 reflections with I > 2σ(I) |
Tmin = 0.982, Tmax = 0.984 | Rint = 0.029 |
3893 measured reflections |
R[F2 > 2σ(F2)] = 0.059 | 3 restraints |
wR(F2) = 0.138 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.30 | Δρmax = 0.24 e Å−3 |
1396 reflections | Δρmin = −0.22 e Å−3 |
195 parameters |
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 | ||
N1 | 0.4613 (6) | 0.2010 (11) | 0.6226 (5) | 0.0425 (15) | |
N2 | 0.5326 (7) | 0.2629 (11) | 0.5429 (5) | 0.0450 (16) | |
O1 | 0.1067 (5) | 0.2188 (12) | 0.9836 (4) | 0.0622 (17) | |
O2 | 0.5985 (5) | −0.1728 (8) | 0.5324 (4) | 0.0565 (13) | |
O3 | 0.8991 (5) | 0.3171 (14) | 0.1869 (4) | 0.0609 (16) | |
C1 | 0.3252 (7) | 0.3481 (14) | 0.7438 (6) | 0.0426 (19) | |
C2 | 0.3588 (7) | 0.1499 (17) | 0.8117 (6) | 0.051 (2) | |
H2 | 0.4308 | 0.0462 | 0.8022 | 0.061* | |
C3 | 0.2908 (7) | 0.0991 (17) | 0.8929 (6) | 0.056 (2) | |
H3 | 0.3165 | −0.0343 | 0.9381 | 0.067* | |
C4 | 0.1832 (8) | 0.2503 (16) | 0.9059 (6) | 0.048 (2) | |
C5 | 0.1462 (9) | 0.4446 (17) | 0.8393 (6) | 0.063 (3) | |
H5 | 0.0728 | 0.5442 | 0.8479 | 0.076* | |
C6 | 0.2175 (9) | 0.4938 (16) | 0.7594 (7) | 0.063 (3) | |
H6 | 0.1920 | 0.6292 | 0.7148 | 0.075* | |
C7 | 0.3991 (8) | 0.3890 (13) | 0.6570 (6) | 0.046 (2) | |
H7 | 0.3992 | 0.5602 | 0.6269 | 0.056* | |
C8 | 0.1325 (10) | 0.0017 (19) | 1.0495 (7) | 0.073 (3) | |
H8A | 0.1294 | −0.1691 | 1.0144 | 0.110* | |
H8B | 0.0708 | 0.0002 | 1.0990 | 0.110* | |
H8C | 0.2150 | 0.0258 | 1.0799 | 0.110* | |
C9 | 0.6006 (7) | 0.0565 (13) | 0.5037 (5) | 0.0379 (17) | |
C10 | 0.6766 (6) | 0.1469 (14) | 0.4199 (5) | 0.0358 (16) | |
C11 | 0.7875 (7) | 0.0084 (14) | 0.4050 (6) | 0.046 (2) | |
H11 | 0.8132 | −0.1311 | 0.4478 | 0.055* | |
C12 | 0.8599 (8) | 0.0742 (16) | 0.3281 (6) | 0.051 (2) | |
H12 | 0.9361 | −0.0157 | 0.3203 | 0.061* | |
C13 | 0.8211 (8) | 0.2711 (15) | 0.2624 (6) | 0.0434 (18) | |
C14 | 0.7112 (7) | 0.4090 (14) | 0.2749 (5) | 0.046 (2) | |
H14 | 0.6848 | 0.5440 | 0.2305 | 0.055* | |
C15 | 0.6390 (7) | 0.3463 (15) | 0.3546 (5) | 0.0427 (18) | |
H15 | 0.5644 | 0.4409 | 0.3635 | 0.051* | |
C16 | 0.8644 (10) | 0.5240 (18) | 0.1176 (6) | 0.062 (3) | |
H16A | 0.7837 | 0.4805 | 0.0870 | 0.093* | |
H16B | 0.9263 | 0.5338 | 0.0684 | 0.093* | |
H16C | 0.8596 | 0.6976 | 0.1504 | 0.093* | |
H2A | 0.539 (8) | 0.440 (5) | 0.525 (6) | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.047 (4) | 0.024 (3) | 0.058 (4) | −0.002 (3) | 0.015 (3) | −0.002 (3) |
N2 | 0.045 (4) | 0.040 (3) | 0.052 (4) | −0.006 (3) | 0.017 (3) | 0.010 (3) |
O1 | 0.055 (4) | 0.071 (4) | 0.062 (4) | 0.008 (3) | 0.025 (3) | 0.005 (3) |
O2 | 0.077 (3) | 0.018 (2) | 0.077 (3) | −0.002 (2) | 0.027 (3) | 0.007 (2) |
O3 | 0.049 (4) | 0.081 (4) | 0.054 (3) | −0.001 (3) | 0.016 (3) | 0.008 (3) |
C1 | 0.049 (5) | 0.019 (3) | 0.060 (5) | 0.006 (3) | 0.006 (4) | −0.002 (3) |
C2 | 0.040 (5) | 0.053 (5) | 0.061 (5) | 0.009 (4) | 0.014 (4) | 0.008 (4) |
C3 | 0.043 (5) | 0.066 (5) | 0.060 (6) | 0.012 (5) | 0.005 (5) | 0.013 (4) |
C4 | 0.037 (4) | 0.061 (5) | 0.047 (5) | −0.004 (4) | 0.006 (4) | −0.004 (4) |
C5 | 0.056 (6) | 0.063 (6) | 0.071 (7) | 0.026 (5) | 0.017 (5) | 0.009 (5) |
C6 | 0.080 (7) | 0.047 (5) | 0.063 (6) | 0.017 (5) | 0.019 (6) | 0.017 (4) |
C7 | 0.061 (5) | 0.016 (3) | 0.063 (5) | −0.003 (3) | 0.014 (4) | 0.012 (3) |
C8 | 0.085 (8) | 0.072 (6) | 0.066 (7) | −0.002 (5) | 0.030 (6) | 0.004 (5) |
C9 | 0.031 (4) | 0.038 (4) | 0.045 (4) | −0.004 (3) | 0.004 (3) | −0.007 (3) |
C10 | 0.031 (4) | 0.034 (3) | 0.043 (4) | −0.010 (3) | 0.006 (3) | 0.000 (3) |
C11 | 0.040 (5) | 0.039 (4) | 0.060 (6) | 0.004 (3) | 0.006 (4) | 0.007 (4) |
C12 | 0.038 (5) | 0.058 (5) | 0.057 (6) | 0.010 (4) | 0.009 (4) | −0.002 (4) |
C13 | 0.039 (4) | 0.042 (4) | 0.050 (5) | −0.007 (3) | 0.007 (4) | −0.007 (3) |
C14 | 0.054 (5) | 0.042 (4) | 0.043 (5) | 0.001 (4) | 0.012 (4) | 0.007 (3) |
C15 | 0.037 (4) | 0.038 (4) | 0.054 (5) | 0.007 (4) | 0.005 (4) | 0.001 (4) |
C16 | 0.072 (7) | 0.067 (5) | 0.049 (5) | −0.011 (5) | 0.017 (5) | 0.003 (4) |
N1—C7 | 1.234 (9) | C6—H6 | 0.9300 |
N1—N2 | 1.383 (6) | C7—H7 | 0.9300 |
N2—C9 | 1.361 (9) | C8—H8A | 0.9600 |
N2—H2A | 0.900 (11) | C8—H8B | 0.9600 |
O1—C4 | 1.371 (10) | C8—H8C | 0.9600 |
O1—C8 | 1.408 (10) | C9—C10 | 1.492 (9) |
O2—C9 | 1.186 (7) | C10—C15 | 1.367 (9) |
O3—C13 | 1.366 (10) | C10—C11 | 1.380 (10) |
O3—C16 | 1.421 (10) | C11—C12 | 1.364 (10) |
C1—C6 | 1.370 (11) | C11—H11 | 0.9300 |
C1—C2 | 1.375 (10) | C12—C13 | 1.365 (11) |
C1—C7 | 1.462 (10) | C12—H12 | 0.9300 |
C2—C3 | 1.369 (11) | C13—C14 | 1.364 (11) |
C2—H2 | 0.9300 | C14—C15 | 1.390 (10) |
C3—C4 | 1.377 (11) | C14—H14 | 0.9300 |
C3—H3 | 0.9300 | C15—H15 | 0.9300 |
C4—C5 | 1.359 (11) | C16—H16A | 0.9600 |
C5—C6 | 1.373 (11) | C16—H16B | 0.9600 |
C5—H5 | 0.9300 | C16—H16C | 0.9600 |
C7—N1—N2 | 117.1 (6) | O1—C8—H8C | 109.5 |
C9—N2—N1 | 117.6 (5) | H8A—C8—H8C | 109.5 |
C9—N2—H2A | 124 (5) | H8B—C8—H8C | 109.5 |
N1—N2—H2A | 118 (5) | O2—C9—N2 | 123.4 (7) |
C4—O1—C8 | 118.1 (7) | O2—C9—C10 | 123.4 (7) |
C13—O3—C16 | 118.0 (7) | N2—C9—C10 | 113.2 (6) |
C6—C1—C2 | 117.1 (8) | C15—C10—C11 | 118.6 (7) |
C6—C1—C7 | 122.3 (7) | C15—C10—C9 | 123.9 (6) |
C2—C1—C7 | 120.5 (7) | C11—C10—C9 | 117.4 (7) |
C3—C2—C1 | 122.7 (7) | C12—C11—C10 | 120.6 (7) |
C3—C2—H2 | 118.7 | C12—C11—H11 | 119.7 |
C1—C2—H2 | 118.7 | C10—C11—H11 | 119.7 |
C2—C3—C4 | 118.4 (8) | C11—C12—C13 | 120.4 (8) |
C2—C3—H3 | 120.8 | C11—C12—H12 | 119.8 |
C4—C3—H3 | 120.8 | C13—C12—H12 | 119.8 |
C5—C4—O1 | 115.5 (8) | C14—C13—C12 | 120.0 (8) |
C5—C4—C3 | 120.4 (9) | C14—C13—O3 | 124.2 (7) |
O1—C4—C3 | 124.1 (8) | C12—C13—O3 | 115.7 (8) |
C4—C5—C6 | 119.9 (8) | C13—C14—C15 | 119.5 (7) |
C4—C5—H5 | 120.1 | C13—C14—H14 | 120.3 |
C6—C5—H5 | 120.1 | C15—C14—H14 | 120.3 |
C1—C6—C5 | 121.6 (8) | C10—C15—C14 | 120.7 (7) |
C1—C6—H6 | 119.2 | C10—C15—H15 | 119.6 |
C5—C6—H6 | 119.2 | C14—C15—H15 | 119.6 |
N1—C7—C1 | 121.4 (6) | O3—C16—H16A | 109.5 |
N1—C7—H7 | 119.3 | O3—C16—H16B | 109.5 |
C1—C7—H7 | 119.3 | H16A—C16—H16B | 109.5 |
O1—C8—H8A | 109.5 | O3—C16—H16C | 109.5 |
O1—C8—H8B | 109.5 | H16A—C16—H16C | 109.5 |
H8A—C8—H8B | 109.5 | H16B—C16—H16C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O2i | 0.90 (1) | 1.99 (3) | 2.844 (7) | 157 (7) |
Symmetry code: (i) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C16H16N2O3 |
Mr | 284.31 |
Crystal system, space group | Monoclinic, Pc |
Temperature (K) | 298 |
a, b, c (Å) | 10.617 (3), 4.877 (2), 13.632 (3) |
β (°) | 92.409 (2) |
V (Å3) | 705.2 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.20 × 0.18 × 0.17 |
Data collection | |
Diffractometer | Bruker SMART 1000 CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.982, 0.984 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3893, 1396, 1026 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.627 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.059, 0.138, 1.30 |
No. of reflections | 1396 |
No. of parameters | 195 |
No. of restraints | 3 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.24, −0.22 |
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—H2A···O2i | 0.900 (11) | 1.99 (3) | 2.844 (7) | 157 (7) |
Symmetry code: (i) x, y+1, z. |
References
Ajani, O. O., Obafemi, C. A., Nwinyi, O. C. & Akinpelu, D. A. (2010). Bioorg. Med. Chem. 18, 214–221. Web of Science CrossRef PubMed CAS Google Scholar
Angelusiu, M. V., Barbuceanu, S. F., Draghici, C. & Almajan, G. L. (2010). Eur. J. Med. Chem. 45, 2055–2062. Web of Science CrossRef CAS PubMed Google Scholar
Bruker (1998). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Horiuchi, T., Nagata, M., KitagawaB, M., Akahane, K. & Uoto, K. (2009). Bioorg. Med. Chem. 17, 7850–7860. Web of Science CrossRef PubMed CAS Google Scholar
Lei, Y. & Fu, C. (2011). Acta Cryst. E67, o410. Web of Science CSD CrossRef IUCr Journals Google Scholar
Peng, S.-J. (2011). J. Chem. Crystallogr. 41, 280-285. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Tang, C.-B. (2011). Acta Cryst. E67, o271. Web of Science CSD CrossRef IUCr Journals Google Scholar
Zhang, Z. (2011). Acta Cryst. E67, o300. Web of Science CSD CrossRef IUCr Journals Google Scholar
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.
Hydrazone compounds have attracted much attention due to their biological activities (Peng, 2011; Angelusiu et al., 2010; Ajani et al., 2010; Horiuchi et al., 2009). In this paper, we present the title compound (I), which is a new hydrazone derivative.
In (I) (Fig. 1), all bond lengths and angles are normal and correspond to those observed in the related compounds (Zhang, 2011; Lei & Fu, 2011; Tang, 2011). The dihedral angle between the two benzene rings is 3.1 (3)°. In the crystal structure, intermolecular N—H···O hydrogen bonds (Table 1) link the molecules related by translation along axis b into chains (Fig. 2).