organic compounds
N′-(2-Hydroxy-4-methoxybenzylidene)isonicotinohydrazide
aModern Medical Research Center, Third Affiliated Hospital of Soochow University, Changzhou 213003, People's Republic of China
*Correspondence e-mail: czfph@126.com
The title compound, C14H13N3O3, was synthesized by the condensation reaction of 2-hydroxy-4-methoxybenzaldehyde with isonicotinohydrazide in a methanol solution. The molecule of the compound displays a trans configuration with respect to the C=N and C—N bonds. The dihedral angle between the benzene and the pyridine rings is 27.3 (2)°. In the crystal, molecules are linked by N—H⋯N interactions into zigzag chains with graph-set notation C(7) along [010]. An intramolecular O—H⋯N hydrogen bond is observed.
Related literature
For 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). For hydrogen-bond motifs, see: Bernstein et al. (1995).
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/S1600536810010020/bx2271sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810010020/bx2271Isup2.hkl
2-Hydroxy-4-methoxybenzaldehyde (0.01 mol, 1.52 g) and isonicotinohydrazide (0.01 mol, 1.37 g) were dissolved in a methanol solution (50 ml). The mixture was stirred at room temperature to give a clear colorless solution. Crystals of the title compound were formed by gradual evaporation of the solvent for a week at room temperature.
H2 atom was located in a difference map and refined with 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) and 1.5Ueq(O1 and C14).
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).C14H13N3O3 | F(000) = 568 |
Mr = 271.27 | Dx = 1.387 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
a = 8.4704 (11) Å | Cell parameters from 2534 reflections |
b = 10.6866 (15) Å | θ = 2.4–29.9° |
c = 14.848 (2) Å | µ = 0.10 mm−1 |
β = 104.929 (5)° | T = 298 K |
V = 1298.7 (3) Å3 | Block, colourless |
Z = 4 | 0.17 × 0.15 × 0.15 mm |
Bruker SMART 1000 CCD area-detector diffractometer | 2814 independent reflections |
Radiation source: fine-focus sealed tube | 2148 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.021 |
ω scans | θmax = 27.0°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −9→10 |
Tmin = 0.983, Tmax = 0.985 | k = −11→13 |
7591 measured reflections | l = −18→14 |
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)] = 0.040 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.107 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0491P)2 + 0.2097P] where P = (Fo2 + 2Fc2)/3 |
2814 reflections | (Δ/σ)max < 0.001 |
186 parameters | Δρmax = 0.15 e Å−3 |
1 restraint | Δρmin = −0.17 e Å−3 |
C14H13N3O3 | V = 1298.7 (3) Å3 |
Mr = 271.27 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 8.4704 (11) Å | µ = 0.10 mm−1 |
b = 10.6866 (15) Å | T = 298 K |
c = 14.848 (2) Å | 0.17 × 0.15 × 0.15 mm |
β = 104.929 (5)° |
Bruker SMART 1000 CCD area-detector diffractometer | 2814 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2148 reflections with I > 2σ(I) |
Tmin = 0.983, Tmax = 0.985 | Rint = 0.021 |
7591 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 1 restraint |
wR(F2) = 0.107 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.15 e Å−3 |
2814 reflections | Δρmin = −0.17 e Å−3 |
186 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 | 0.10385 (14) | 0.87232 (11) | 0.12848 (8) | 0.0425 (3) | |
N2 | 0.01859 (14) | 0.78408 (11) | 0.16392 (8) | 0.0422 (3) | |
N3 | −0.26459 (16) | 0.40486 (11) | 0.24523 (9) | 0.0491 (3) | |
O1 | 0.28189 (15) | 0.93517 (9) | 0.01927 (8) | 0.0554 (3) | |
H1 | 0.2284 | 0.8881 | 0.0436 | 0.083* | |
O2 | 0.12526 (15) | 0.62775 (10) | 0.09488 (9) | 0.0624 (3) | |
O3 | 0.40498 (14) | 1.36738 (9) | 0.00218 (8) | 0.0550 (3) | |
C1 | 0.17894 (16) | 1.08276 (12) | 0.11284 (10) | 0.0404 (3) | |
C2 | 0.26792 (16) | 1.05413 (12) | 0.04800 (9) | 0.0386 (3) | |
C3 | 0.34625 (17) | 1.14692 (12) | 0.01077 (10) | 0.0410 (3) | |
H3 | 0.4072 | 1.1263 | −0.0310 | 0.049* | |
C4 | 0.33345 (17) | 1.27035 (12) | 0.03599 (10) | 0.0421 (3) | |
C5 | 0.24469 (19) | 1.30187 (14) | 0.09935 (12) | 0.0518 (4) | |
H5 | 0.2356 | 1.3850 | 0.1159 | 0.062* | |
C6 | 0.17066 (19) | 1.20882 (14) | 0.13711 (11) | 0.0512 (4) | |
H6 | 0.1129 | 1.2301 | 0.1803 | 0.061* | |
C7 | 0.09706 (17) | 0.98671 (13) | 0.15257 (10) | 0.0446 (3) | |
H7 | 0.0393 | 1.0082 | 0.1958 | 0.054* | |
C8 | 0.03539 (16) | 0.66264 (13) | 0.14180 (9) | 0.0410 (3) | |
C9 | −0.06727 (16) | 0.57305 (12) | 0.17959 (9) | 0.0365 (3) | |
C10 | −0.12509 (18) | 0.46540 (13) | 0.13050 (10) | 0.0437 (3) | |
H10 | −0.0990 | 0.4472 | 0.0748 | 0.052* | |
C11 | −0.22227 (19) | 0.38542 (14) | 0.16569 (11) | 0.0493 (4) | |
H11 | −0.2607 | 0.3135 | 0.1319 | 0.059* | |
C12 | −0.20463 (18) | 0.50811 (13) | 0.29267 (10) | 0.0454 (3) | |
H12 | −0.2304 | 0.5231 | 0.3489 | 0.054* | |
C13 | −0.10710 (17) | 0.59344 (12) | 0.26321 (9) | 0.0395 (3) | |
H13 | −0.0684 | 0.6638 | 0.2989 | 0.047* | |
C14 | 0.4899 (2) | 1.34231 (15) | −0.06713 (12) | 0.0585 (4) | |
H14A | 0.5817 | 1.2890 | −0.0415 | 0.088* | |
H14B | 0.5276 | 1.4196 | −0.0873 | 0.088* | |
H14C | 0.4177 | 1.3015 | −0.1193 | 0.088* | |
H2 | −0.0540 (19) | 0.8096 (18) | 0.1945 (12) | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0453 (7) | 0.0384 (6) | 0.0492 (7) | −0.0015 (5) | 0.0219 (5) | 0.0052 (5) |
N2 | 0.0459 (7) | 0.0376 (6) | 0.0506 (7) | −0.0014 (5) | 0.0261 (5) | 0.0030 (5) |
N3 | 0.0577 (8) | 0.0419 (7) | 0.0544 (7) | −0.0031 (6) | 0.0266 (6) | 0.0045 (6) |
O1 | 0.0798 (8) | 0.0316 (5) | 0.0704 (7) | −0.0041 (5) | 0.0477 (6) | −0.0036 (5) |
O2 | 0.0732 (7) | 0.0502 (6) | 0.0831 (8) | −0.0044 (5) | 0.0549 (7) | −0.0083 (6) |
O3 | 0.0653 (7) | 0.0335 (5) | 0.0721 (7) | −0.0032 (5) | 0.0281 (6) | 0.0067 (5) |
C1 | 0.0385 (7) | 0.0357 (7) | 0.0496 (8) | 0.0020 (6) | 0.0161 (6) | 0.0012 (6) |
C2 | 0.0426 (7) | 0.0323 (7) | 0.0424 (7) | 0.0012 (5) | 0.0135 (6) | 0.0006 (6) |
C3 | 0.0459 (7) | 0.0371 (7) | 0.0429 (7) | 0.0003 (6) | 0.0167 (6) | 0.0019 (6) |
C4 | 0.0420 (7) | 0.0330 (7) | 0.0497 (8) | 0.0006 (6) | 0.0091 (6) | 0.0053 (6) |
C5 | 0.0568 (9) | 0.0310 (7) | 0.0722 (10) | 0.0026 (6) | 0.0247 (8) | −0.0039 (7) |
C6 | 0.0523 (9) | 0.0426 (8) | 0.0665 (10) | 0.0040 (6) | 0.0294 (8) | −0.0051 (7) |
C7 | 0.0439 (8) | 0.0442 (8) | 0.0516 (8) | 0.0013 (6) | 0.0230 (7) | 0.0001 (6) |
C8 | 0.0429 (7) | 0.0412 (8) | 0.0436 (7) | 0.0006 (6) | 0.0198 (6) | 0.0002 (6) |
C9 | 0.0361 (7) | 0.0347 (7) | 0.0416 (7) | 0.0045 (5) | 0.0155 (6) | 0.0028 (5) |
C10 | 0.0521 (8) | 0.0404 (7) | 0.0445 (8) | 0.0008 (6) | 0.0231 (7) | −0.0031 (6) |
C11 | 0.0574 (9) | 0.0406 (8) | 0.0541 (9) | −0.0066 (7) | 0.0217 (7) | −0.0048 (7) |
C12 | 0.0557 (9) | 0.0456 (8) | 0.0408 (8) | 0.0036 (7) | 0.0231 (7) | 0.0041 (6) |
C13 | 0.0461 (8) | 0.0366 (7) | 0.0380 (7) | 0.0019 (6) | 0.0148 (6) | −0.0003 (6) |
C14 | 0.0664 (10) | 0.0444 (9) | 0.0713 (11) | −0.0039 (7) | 0.0301 (9) | 0.0107 (8) |
N1—C7 | 1.2791 (18) | C4—C5 | 1.388 (2) |
N1—N2 | 1.3724 (15) | C5—C6 | 1.370 (2) |
N2—C8 | 1.3552 (18) | C5—H5 | 0.9300 |
N2—H2 | 0.896 (9) | C6—H6 | 0.9300 |
N3—C11 | 1.3358 (19) | C7—H7 | 0.9300 |
N3—C12 | 1.3369 (19) | C8—C9 | 1.4963 (18) |
O1—C2 | 1.3558 (16) | C9—C10 | 1.3823 (19) |
O1—H1 | 0.8200 | C9—C13 | 1.3852 (18) |
O2—C8 | 1.2153 (16) | C10—C11 | 1.379 (2) |
O3—C4 | 1.3606 (16) | C10—H10 | 0.9300 |
O3—C14 | 1.4247 (19) | C11—H11 | 0.9300 |
C1—C6 | 1.401 (2) | C12—C13 | 1.3753 (19) |
C1—C2 | 1.4009 (19) | C12—H12 | 0.9300 |
C1—C7 | 1.4468 (19) | C13—H13 | 0.9300 |
C2—C3 | 1.3849 (19) | C14—H14A | 0.9600 |
C3—C4 | 1.3831 (19) | C14—H14B | 0.9600 |
C3—H3 | 0.9300 | C14—H14C | 0.9600 |
C7—N1—N2 | 118.91 (12) | N1—C7—H7 | 119.9 |
C8—N2—N1 | 117.81 (11) | C1—C7—H7 | 119.9 |
C8—N2—H2 | 122.9 (13) | O2—C8—N2 | 123.59 (13) |
N1—N2—H2 | 118.9 (13) | O2—C8—C9 | 121.93 (13) |
C11—N3—C12 | 116.24 (12) | N2—C8—C9 | 114.48 (11) |
C2—O1—H1 | 109.5 | C10—C9—C13 | 117.94 (12) |
C4—O3—C14 | 118.62 (11) | C10—C9—C8 | 119.73 (12) |
C6—C1—C2 | 117.28 (13) | C13—C9—C8 | 122.33 (12) |
C6—C1—C7 | 121.09 (13) | C11—C10—C9 | 118.74 (13) |
C2—C1—C7 | 121.63 (12) | C11—C10—H10 | 120.6 |
O1—C2—C3 | 117.14 (12) | C9—C10—H10 | 120.6 |
O1—C2—C1 | 121.81 (12) | N3—C11—C10 | 124.11 (14) |
C3—C2—C1 | 121.05 (12) | N3—C11—H11 | 117.9 |
C4—C3—C2 | 119.72 (13) | C10—C11—H11 | 117.9 |
C4—C3—H3 | 120.1 | N3—C12—C13 | 123.88 (13) |
C2—C3—H3 | 120.1 | N3—C12—H12 | 118.1 |
O3—C4—C3 | 123.60 (13) | C13—C12—H12 | 118.1 |
O3—C4—C5 | 115.81 (12) | C12—C13—C9 | 119.06 (13) |
C3—C4—C5 | 120.58 (13) | C12—C13—H13 | 120.5 |
C6—C5—C4 | 119.07 (13) | C9—C13—H13 | 120.5 |
C6—C5—H5 | 120.5 | O3—C14—H14A | 109.5 |
C4—C5—H5 | 120.5 | O3—C14—H14B | 109.5 |
C5—C6—C1 | 122.28 (14) | H14A—C14—H14B | 109.5 |
C5—C6—H6 | 118.9 | O3—C14—H14C | 109.5 |
C1—C6—H6 | 118.9 | H14A—C14—H14C | 109.5 |
N1—C7—C1 | 120.22 (13) | H14B—C14—H14C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···N3i | 0.90 (1) | 2.22 (1) | 3.1000 (17) | 169 (2) |
O1—H1···N1 | 0.82 | 1.85 | 2.5720 (15) | 146 |
Symmetry code: (i) −x−1/2, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H13N3O3 |
Mr | 271.27 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 298 |
a, b, c (Å) | 8.4704 (11), 10.6866 (15), 14.848 (2) |
β (°) | 104.929 (5) |
V (Å3) | 1298.7 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.17 × 0.15 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART 1000 CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.983, 0.985 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7591, 2814, 2148 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.107, 1.05 |
No. of reflections | 2814 |
No. of parameters | 186 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.15, −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 |
N2—H2···N3i | 0.896 (9) | 2.215 (10) | 3.1000 (17) | 169.3 (18) |
O1—H1···N1 | 0.82 | 1.85 | 2.5720 (15) | 146.4 |
Symmetry code: (i) −x−1/2, y+1/2, −z+1/2. |
Acknowledgements
Financial support from the Third Affiliated Hospital of Suzhou University is acknowledged.
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.
Considerable interest has been focused on the 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 here, the crystal structure of the title new Schiff base compound, Fig. 1, derived from the condensation reaction of 2-hydroxy-4-methoxybenzaldehyde with isonicotinohydrazide is reported. The molecular structure of the title compound 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 benzene ring and the pyridine ring is 27.3 (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, molecules are linked by interactions N—H···N into zigzag chains with graph-set notation C(7) along [010] (Bernstein, et al., 1995 ). An intramolecular O—H···N hydrogen bond is observed. (Table 1 and Fig. 2).