organic compounds
N′-(2,3-Dimethoxybenzylidene)-2,4-dihydroxybenzohydrazide
aDepartment of Chemistry and Life Science, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
*Correspondence e-mail: hanyouyue@126.com
In the title compound, C16H16N2O5, the dihedral angle between the two benzene rings is 8.5 (3)° and the molecule adopts an E configuration with respect to the C=N bond. There is an intramolecular N—H⋯O hydrogen bond in the molecule, which generates an S(6) ring. In the crystal, molecules are linked through intermolecular O—H⋯O hydrogen bonds, forming layers parallel to the bc plane.
Related literature
For related structures and background information, see: Han & Zhao (2010a,b). For reference structural data, see: Allen et al. (1987).
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: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810012134/hb5385sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810012134/hb5385Isup2.hkl
A mixture of 2,3-dimethoxybenzaldehyde (0.166 g, 1 mmol) and 2,4-dihydroxybenzohydrazide (0.168 g, 1 mmol) in 50 ml me thanol was stirred at room temperature for 1 h. The mixture was filtered to remove impurities, and then left at room temperature. After a few days, colourless blocks of (I) were formed.
H1A was located in a difference Fourier map and refined isotropically, with the N–H distance restrained to 0.90 (1) Å. The other H atoms were positioned geometrically and refined using the riding-model approximation, with C–H = 0.93 or 0.96 Å, and O–H = 0.82 Å, and Uiso(H) = 1.2Ueq(C) or Uiso(H) = 1.5Ueq(methyl C and O). In the absence of significant
effects, Friedel pairs were averaged.As part of our ongoing structural studies of hydrazone compounds (Han & Zhao, 2010a,b), we now report the sturcture of the title compound, (I).
In the molecule of the title compound, Fig. 1, the dihedral angle between the two benzene rings is 8.5 (3)°. The molecule adopts an E configuration with respect to the C═N bond. There is an intramolecular N–H···O hydrogen bond (Table 1) in the molecule.
In the
molecules are linked through intermolecular O–H···O hydrogen bonds (Table 1) to form layers parallel to the bc plane (Fig. 2).For related structures and background information, see: Han & Zhao (2010a,b). For reference structural data, see: Allen et al. (1987).
Data collection: SMART (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C16H16N2O5 | F(000) = 664 |
Mr = 316.31 | Dx = 1.466 Mg m−3 |
Monoclinic, Cc | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: C -2yc | Cell parameters from 1397 reflections |
a = 24.918 (4) Å | θ = 2.7–25.0° |
b = 5.0291 (8) Å | µ = 0.11 mm−1 |
c = 13.075 (2) Å | T = 298 K |
β = 118.994 (2)° | Block, colourless |
V = 1433.1 (4) Å3 | 0.20 × 0.20 × 0.18 mm |
Z = 4 |
Bruker SMART CCD diffractometer | 1549 independent reflections |
Radiation source: fine-focus sealed tube | 1247 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.047 |
ω scans | θmax = 27.0°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −23→31 |
Tmin = 0.978, Tmax = 0.980 | k = −6→6 |
3934 measured reflections | l = −16→16 |
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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.089 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.78 | w = 1/[σ2(Fo2) + (0.0677P)2 + 0.0824P] where P = (Fo2 + 2Fc2)/3 |
1549 reflections | (Δ/σ)max = 0.001 |
215 parameters | Δρmax = 0.15 e Å−3 |
3 restraints | Δρmin = −0.15 e Å−3 |
C16H16N2O5 | V = 1433.1 (4) Å3 |
Mr = 316.31 | Z = 4 |
Monoclinic, Cc | Mo Kα radiation |
a = 24.918 (4) Å | µ = 0.11 mm−1 |
b = 5.0291 (8) Å | T = 298 K |
c = 13.075 (2) Å | 0.20 × 0.20 × 0.18 mm |
β = 118.994 (2)° |
Bruker SMART CCD diffractometer | 1549 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 1247 reflections with I > 2σ(I) |
Tmin = 0.978, Tmax = 0.980 | Rint = 0.047 |
3934 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 3 restraints |
wR(F2) = 0.089 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.78 | Δρmax = 0.15 e Å−3 |
1549 reflections | Δρmin = −0.15 e Å−3 |
215 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 > 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 | 0.34984 (10) | 0.3854 (5) | 0.19993 (19) | 0.0380 (5) | |
N2 | 0.32187 (10) | 0.2191 (4) | 0.24411 (19) | 0.0393 (5) | |
O1 | 0.35804 (9) | 0.5925 (4) | 0.02075 (15) | 0.0441 (5) | |
H1 | 0.3604 | 0.5886 | −0.0396 | 0.066* | |
O2 | 0.49643 (9) | 1.3145 (4) | 0.09920 (16) | 0.0456 (5) | |
H2 | 0.4745 | 1.3395 | 0.0289 | 0.068* | |
O3 | 0.41233 (10) | 0.5503 (4) | 0.37839 (17) | 0.0460 (5) | |
O4 | 0.18657 (10) | −0.2434 (4) | 0.00073 (18) | 0.0474 (5) | |
O5 | 0.11485 (10) | −0.5565 (4) | 0.05383 (18) | 0.0526 (6) | |
C1 | 0.42086 (11) | 0.7354 (5) | 0.2189 (2) | 0.0317 (5) | |
C2 | 0.40165 (11) | 0.7604 (5) | 0.0990 (2) | 0.0310 (5) | |
C3 | 0.42595 (12) | 0.9539 (5) | 0.0580 (2) | 0.0348 (5) | |
H3 | 0.4117 | 0.9707 | −0.0219 | 0.042* | |
C4 | 0.47143 (12) | 1.1230 (5) | 0.1358 (2) | 0.0339 (6) | |
C5 | 0.49350 (13) | 1.0928 (5) | 0.2551 (2) | 0.0409 (6) | |
H5 | 0.5254 | 1.1995 | 0.3082 | 0.049* | |
C6 | 0.46786 (12) | 0.9044 (5) | 0.2941 (2) | 0.0381 (6) | |
H6 | 0.4825 | 0.8886 | 0.3741 | 0.046* | |
C7 | 0.39455 (12) | 0.5504 (5) | 0.2719 (2) | 0.0331 (6) | |
C8 | 0.28150 (12) | 0.0637 (5) | 0.1698 (2) | 0.0410 (6) | |
H8 | 0.2739 | 0.0663 | 0.0929 | 0.049* | |
C9 | 0.24668 (12) | −0.1189 (6) | 0.2024 (2) | 0.0397 (6) | |
C10 | 0.19806 (13) | −0.2619 (5) | 0.1154 (2) | 0.0373 (6) | |
C11 | 0.16267 (13) | −0.4294 (5) | 0.1442 (2) | 0.0402 (6) | |
C12 | 0.17733 (14) | −0.4550 (6) | 0.2600 (3) | 0.0494 (7) | |
H12 | 0.1539 | −0.5652 | 0.2800 | 0.059* | |
C13 | 0.22640 (17) | −0.3188 (7) | 0.3461 (3) | 0.0568 (8) | |
H13 | 0.2365 | −0.3425 | 0.4239 | 0.068* | |
C14 | 0.26058 (14) | −0.1489 (6) | 0.3189 (3) | 0.0511 (7) | |
H14 | 0.2928 | −0.0541 | 0.3777 | 0.061* | |
C15 | 0.13382 (18) | −0.0901 (7) | −0.0739 (3) | 0.0626 (9) | |
H15A | 0.0978 | −0.1745 | −0.0802 | 0.094* | |
H15B | 0.1305 | −0.0775 | −0.1500 | 0.094* | |
H15C | 0.1377 | 0.0850 | −0.0418 | 0.094* | |
C16 | 0.07976 (15) | −0.7352 (7) | 0.0833 (3) | 0.0522 (8) | |
H16A | 0.1058 | −0.8754 | 0.1318 | 0.078* | |
H16B | 0.0471 | −0.8098 | 0.0130 | 0.078* | |
H16C | 0.0628 | −0.6404 | 0.1247 | 0.078* | |
H1A | 0.3388 (18) | 0.390 (8) | 0.1239 (12) | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0413 (13) | 0.0432 (12) | 0.0305 (11) | −0.0079 (10) | 0.0183 (10) | 0.0016 (10) |
N2 | 0.0402 (13) | 0.0420 (12) | 0.0389 (12) | −0.0023 (10) | 0.0218 (11) | 0.0052 (10) |
O1 | 0.0542 (12) | 0.0502 (11) | 0.0279 (9) | −0.0175 (9) | 0.0200 (9) | −0.0075 (8) |
O2 | 0.0498 (13) | 0.0441 (10) | 0.0430 (11) | −0.0080 (9) | 0.0225 (10) | 0.0053 (9) |
O3 | 0.0624 (12) | 0.0486 (11) | 0.0298 (10) | −0.0120 (10) | 0.0245 (9) | −0.0017 (8) |
O4 | 0.0543 (11) | 0.0553 (11) | 0.0400 (10) | −0.0028 (10) | 0.0287 (9) | −0.0038 (9) |
O5 | 0.0572 (13) | 0.0550 (12) | 0.0458 (11) | −0.0207 (10) | 0.0250 (10) | −0.0085 (10) |
C1 | 0.0341 (14) | 0.0323 (13) | 0.0292 (13) | 0.0034 (10) | 0.0158 (11) | 0.0007 (10) |
C2 | 0.0334 (14) | 0.0320 (12) | 0.0283 (13) | −0.0011 (11) | 0.0156 (12) | −0.0025 (10) |
C3 | 0.0403 (14) | 0.0374 (13) | 0.0271 (12) | 0.0005 (11) | 0.0167 (11) | 0.0003 (10) |
C4 | 0.0369 (13) | 0.0315 (13) | 0.0364 (14) | −0.0001 (11) | 0.0200 (12) | 0.0023 (11) |
C5 | 0.0414 (15) | 0.0442 (15) | 0.0329 (14) | −0.0100 (12) | 0.0147 (12) | −0.0065 (11) |
C6 | 0.0422 (14) | 0.0434 (14) | 0.0256 (12) | −0.0048 (12) | 0.0140 (11) | −0.0029 (10) |
C7 | 0.0386 (14) | 0.0347 (13) | 0.0289 (13) | 0.0000 (11) | 0.0188 (11) | −0.0017 (10) |
C8 | 0.0422 (16) | 0.0453 (15) | 0.0337 (14) | −0.0037 (12) | 0.0169 (12) | 0.0042 (12) |
C9 | 0.0393 (15) | 0.0403 (14) | 0.0405 (15) | −0.0003 (12) | 0.0203 (12) | 0.0036 (12) |
C10 | 0.0409 (14) | 0.0359 (14) | 0.0384 (14) | 0.0023 (11) | 0.0219 (12) | −0.0012 (11) |
C11 | 0.0421 (15) | 0.0377 (14) | 0.0445 (16) | −0.0027 (12) | 0.0240 (13) | −0.0027 (12) |
C12 | 0.0541 (18) | 0.0520 (16) | 0.0466 (17) | −0.0134 (14) | 0.0281 (15) | 0.0027 (14) |
C13 | 0.0626 (19) | 0.0684 (19) | 0.0375 (16) | −0.0169 (17) | 0.0228 (15) | 0.0044 (15) |
C14 | 0.0495 (17) | 0.0559 (17) | 0.0392 (16) | −0.0146 (14) | 0.0146 (14) | 0.0000 (13) |
C15 | 0.073 (2) | 0.070 (2) | 0.0394 (17) | 0.0109 (18) | 0.0230 (16) | 0.0041 (15) |
C16 | 0.0493 (18) | 0.0521 (17) | 0.058 (2) | −0.0127 (14) | 0.0284 (16) | −0.0027 (14) |
N1—C7 | 1.342 (3) | C5—C6 | 1.371 (4) |
N1—N2 | 1.382 (3) | C5—H5 | 0.9300 |
N1—H1A | 0.893 (10) | C6—H6 | 0.9300 |
N2—C8 | 1.272 (3) | C8—C9 | 1.461 (4) |
O1—C2 | 1.365 (3) | C8—H8 | 0.9300 |
O1—H1 | 0.8200 | C9—C10 | 1.394 (4) |
O2—C4 | 1.354 (3) | C9—C14 | 1.397 (4) |
O2—H2 | 0.8200 | C10—C11 | 1.397 (3) |
O3—C7 | 1.239 (3) | C11—C12 | 1.380 (4) |
O4—C10 | 1.386 (3) | C12—C13 | 1.378 (4) |
O4—C15 | 1.425 (4) | C12—H12 | 0.9300 |
O5—C11 | 1.364 (3) | C13—C14 | 1.369 (4) |
O5—C16 | 1.430 (3) | C13—H13 | 0.9300 |
C1—C6 | 1.394 (3) | C14—H14 | 0.9300 |
C1—C2 | 1.406 (3) | C15—H15A | 0.9600 |
C1—C7 | 1.489 (3) | C15—H15B | 0.9600 |
C2—C3 | 1.384 (3) | C15—H15C | 0.9600 |
C3—C4 | 1.387 (4) | C16—H16A | 0.9600 |
C3—H3 | 0.9300 | C16—H16B | 0.9600 |
C4—C5 | 1.389 (4) | C16—H16C | 0.9600 |
C7—N1—N2 | 119.8 (2) | C9—C8—H8 | 119.2 |
C7—N1—H1A | 118 (3) | C10—C9—C14 | 119.5 (2) |
N2—N1—H1A | 122 (3) | C10—C9—C8 | 119.3 (2) |
C8—N2—N1 | 115.2 (2) | C14—C9—C8 | 121.2 (3) |
C2—O1—H1 | 109.5 | O4—C10—C9 | 119.4 (2) |
C4—O2—H2 | 109.5 | O4—C10—C11 | 120.4 (2) |
C10—O4—C15 | 114.5 (2) | C9—C10—C11 | 120.2 (2) |
C11—O5—C16 | 116.9 (2) | O5—C11—C12 | 124.2 (2) |
C6—C1—C2 | 116.6 (2) | O5—C11—C10 | 116.7 (2) |
C6—C1—C7 | 117.5 (2) | C12—C11—C10 | 119.1 (2) |
C2—C1—C7 | 125.9 (2) | C11—C12—C13 | 120.5 (3) |
O1—C2—C3 | 118.9 (2) | C11—C12—H12 | 119.7 |
O1—C2—C1 | 119.8 (2) | C13—C12—H12 | 119.7 |
C3—C2—C1 | 121.2 (2) | C14—C13—C12 | 121.1 (3) |
C4—C3—C2 | 120.2 (2) | C14—C13—H13 | 119.5 |
C4—C3—H3 | 119.9 | C12—C13—H13 | 119.5 |
C2—C3—H3 | 119.9 | C13—C14—C9 | 119.6 (3) |
O2—C4—C3 | 122.0 (2) | C13—C14—H14 | 120.2 |
O2—C4—C5 | 118.4 (2) | C9—C14—H14 | 120.2 |
C3—C4—C5 | 119.6 (2) | O4—C15—H15A | 109.5 |
C6—C5—C4 | 119.4 (2) | O4—C15—H15B | 109.5 |
C6—C5—H5 | 120.3 | H15A—C15—H15B | 109.5 |
C4—C5—H5 | 120.3 | O4—C15—H15C | 109.5 |
C5—C6—C1 | 122.9 (2) | H15A—C15—H15C | 109.5 |
C5—C6—H6 | 118.6 | H15B—C15—H15C | 109.5 |
C1—C6—H6 | 118.6 | O5—C16—H16A | 109.5 |
O3—C7—N1 | 120.7 (2) | O5—C16—H16B | 109.5 |
O3—C7—C1 | 121.7 (2) | H16A—C16—H16B | 109.5 |
N1—C7—C1 | 117.6 (2) | O5—C16—H16C | 109.5 |
N2—C8—C9 | 121.6 (3) | H16A—C16—H16C | 109.5 |
N2—C8—H8 | 119.2 | H16B—C16—H16C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O1 | 0.89 (1) | 1.93 (3) | 2.661 (3) | 138 (4) |
O1—H1···O3i | 0.82 | 2.16 | 2.872 (3) | 146 |
O2—H2···O3ii | 0.82 | 1.90 | 2.706 (3) | 166 |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x, −y+2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C16H16N2O5 |
Mr | 316.31 |
Crystal system, space group | Monoclinic, Cc |
Temperature (K) | 298 |
a, b, c (Å) | 24.918 (4), 5.0291 (8), 13.075 (2) |
β (°) | 118.994 (2) |
V (Å3) | 1433.1 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.20 × 0.20 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.978, 0.980 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3934, 1549, 1247 |
Rint | 0.047 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.089, 0.78 |
No. of reflections | 1549 |
No. of parameters | 215 |
No. of restraints | 3 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.15, −0.15 |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O1 | 0.893 (10) | 1.93 (3) | 2.661 (3) | 138 (4) |
O1—H1···O3i | 0.82 | 2.16 | 2.872 (3) | 146 |
O2—H2···O3ii | 0.82 | 1.90 | 2.706 (3) | 166 |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x, −y+2, z−1/2. |
Acknowledgements
This work was supported by the Applied Chemistry Key Subject of Anhui Province (No. 200802187 C). The authors thank Mr Yuan-Guang Zhang of Anqing Normal University for his help with growing the crystals.
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CSD CrossRef Web of Science Google Scholar
Bruker (2001). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2007). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Han, Y.-Y. & Zhao, Q.-R. (2010a). Acta Cryst. E66, o1025. Web of Science CSD CrossRef IUCr Journals Google Scholar
Han, Y.-Y. & Zhao, Q.-R. (2010b). Acta Cryst. E66, o1026. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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As part of our ongoing structural studies of hydrazone compounds (Han & Zhao, 2010a,b), we now report the sturcture of the title compound, (I).
In the molecule of the title compound, Fig. 1, the dihedral angle between the two benzene rings is 8.5 (3)°. The molecule adopts an E configuration with respect to the C═N bond. There is an intramolecular N–H···O hydrogen bond (Table 1) in the molecule.
In the crystal structure, molecules are linked through intermolecular O–H···O hydrogen bonds (Table 1) to form layers parallel to the bc plane (Fig. 2).