organic compounds
2-Methyl-N′-(4-nitrobenzylidene)benzohydrazide
aDepartment of Chemistry, Jiaying University, Meizhou 514015, People's Republic of China
*Correspondence e-mail: tangchunbao@yahoo.com.cn
The title hydrazone compound, C15H13N3O3, was prepared by the condensation of 4-nitrobenzaldehyde with 2-methylbenzohydrazide in methanol. The dihedral angle between the two benzene rings is 14.8 (2)°. In the crystal, molecules are linked through intermolecular N—H⋯O hydrogen bonds, forming chains along the a axis.
Related literature
For general background to et al. (2010); Pyta et al. (2010); Angelusiu et al. (2010); Fun et al. (2008); Singh & Singh (2010); Ahmad et al. (2010). For bond-length data, see: Allen et al. (1987). For a similar hydrazone compound reported recently by the author, see: Tang (2010).
see: RasrasExperimental
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
https://doi.org/10.1107/S1600536810038869/rz2493sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810038869/rz2493Isup2.hkl
4-Nitrobenzaldehyde (0.1 mmol, 15.1 mg) and 3-methylbenzohydrazide (0.1 mmol, 15.0 mg) were dissolved in methanol (20 ml). The mixture was stirred at reflux for 10 min to give a clear yellow solution. Yellow block-shaped crystals of the title compound were formed by slow evaporation of the solvent over several days.
Atom H3 was located in a difference Fourier map and refined isotropically, with the N–H distance restrained to 0.90 (1) Å [Uiso(H) = 0.08 Å2]. Other H atoms were constrained to ideal geometries, with C–H = 0.93–0.96 Å, and with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(C) for methyl H atoms.
Hydrazone compounds have received much attention in biological chemistry and structural chemistry in the last few years (Rasras et al., 2010; Pyta et al., 2010; Angelusiu et al., 2010; Fun et al., 2008; Singh & Singh, 2010; Ahmad et al., 2010). In the present paper, the author reports the
of the title new hydrazone compound (Fig. 1).In the title molecule, the dihedral angle between the two benzene rings is 14.8 (2)°. The torsion angles C4—C7—N2—N3, C7—N2—N3—C8 and N2—N3—C8—C9 are 3.9 (2), 13.8 (2), and 1.5 (2)°, respectively. All the bond lengths are within normal values (Allen et al., 1987) and comparable with those of a similar hydrazone compound the author reported recently (Tang, 2010).
In the
of the compound, molecules are linked through N–H···O intermolecular hydrogen bonds (Table 1), forming chains along the a axis (Fig. 2).For general background to
see: Rasras et al. (2010); Pyta et al. (2010); Angelusiu et al. (2010); Fun et al. (2008); Singh & Singh (2010); Ahmad et al. (2010). For bond-length data, see: Allen et al. (1987). For a similar hydrazone compound reported recently by the author, see: Tang (2010).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).C15H13N3O3 | F(000) = 592 |
Mr = 283.28 | Dx = 1.351 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 996 reflections |
a = 7.416 (1) Å | θ = 2.7–24.5° |
b = 26.198 (3) Å | µ = 0.10 mm−1 |
c = 7.860 (2) Å | T = 298 K |
β = 114.206 (1)° | Block, yellow |
V = 1392.8 (4) Å3 | 0.20 × 0.18 × 0.18 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 2941 independent reflections |
Radiation source: fine-focus sealed tube | 1696 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.046 |
ω scans | θmax = 27.0°, θmin = 3.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −6→9 |
Tmin = 0.981, Tmax = 0.983 | k = −28→33 |
7336 measured reflections | l = −10→9 |
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) = 0.140 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0397P)2 + 0.3174P] where P = (Fo2 + 2Fc2)/3 |
2941 reflections | (Δ/σ)max < 0.001 |
194 parameters | Δρmax = 0.22 e Å−3 |
1 restraint | Δρmin = −0.23 e Å−3 |
C15H13N3O3 | V = 1392.8 (4) Å3 |
Mr = 283.28 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 7.416 (1) Å | µ = 0.10 mm−1 |
b = 26.198 (3) Å | T = 298 K |
c = 7.860 (2) Å | 0.20 × 0.18 × 0.18 mm |
β = 114.206 (1)° |
Bruker SMART CCD area-detector diffractometer | 2941 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1696 reflections with I > 2σ(I) |
Tmin = 0.981, Tmax = 0.983 | Rint = 0.046 |
7336 measured reflections |
R[F2 > 2σ(F2)] = 0.059 | 1 restraint |
wR(F2) = 0.140 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.22 e Å−3 |
2941 reflections | Δρmin = −0.23 e Å−3 |
194 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 | ||
N1 | 0.2497 (4) | 0.47404 (10) | −0.4463 (3) | 0.0669 (7) | |
N2 | 0.2408 (3) | 0.28740 (7) | 0.0842 (2) | 0.0433 (5) | |
N3 | 0.2780 (3) | 0.25697 (8) | 0.2388 (3) | 0.0448 (5) | |
O1 | 0.2312 (4) | 0.45771 (9) | −0.5969 (3) | 0.0985 (8) | |
O2 | 0.2575 (5) | 0.51917 (9) | −0.4093 (3) | 0.1195 (10) | |
O3 | 0.0631 (2) | 0.19571 (6) | 0.0688 (2) | 0.0510 (5) | |
C1 | 0.2623 (3) | 0.43743 (9) | −0.3004 (3) | 0.0456 (6) | |
C2 | 0.2438 (3) | 0.38615 (9) | −0.3415 (3) | 0.0470 (6) | |
H2 | 0.2237 | 0.3747 | −0.4599 | 0.056* | |
C3 | 0.2557 (3) | 0.35214 (9) | −0.2037 (3) | 0.0440 (6) | |
H3A | 0.2420 | 0.3174 | −0.2301 | 0.053* | |
C4 | 0.2877 (3) | 0.36894 (8) | −0.0257 (3) | 0.0380 (5) | |
C5 | 0.3081 (4) | 0.42089 (9) | 0.0113 (3) | 0.0504 (6) | |
H5 | 0.3316 | 0.4326 | 0.1302 | 0.060* | |
C6 | 0.2938 (4) | 0.45538 (9) | −0.1266 (3) | 0.0527 (7) | |
H6 | 0.3055 | 0.4902 | −0.1019 | 0.063* | |
C7 | 0.3044 (3) | 0.33305 (9) | 0.1220 (3) | 0.0431 (6) | |
H7 | 0.3625 | 0.3436 | 0.2458 | 0.052* | |
C8 | 0.1838 (3) | 0.21176 (9) | 0.2194 (3) | 0.0383 (5) | |
C9 | 0.2356 (3) | 0.18386 (9) | 0.3991 (3) | 0.0382 (5) | |
C10 | 0.2726 (3) | 0.13129 (9) | 0.4118 (3) | 0.0440 (6) | |
C11 | 0.3170 (4) | 0.10849 (11) | 0.5841 (4) | 0.0620 (8) | |
H11 | 0.3466 | 0.0738 | 0.5981 | 0.074* | |
C12 | 0.3184 (4) | 0.13555 (13) | 0.7343 (4) | 0.0689 (9) | |
H12 | 0.3460 | 0.1188 | 0.8466 | 0.083* | |
C13 | 0.2796 (4) | 0.18702 (12) | 0.7209 (3) | 0.0620 (8) | |
H13 | 0.2801 | 0.2052 | 0.8226 | 0.074* | |
C14 | 0.2399 (4) | 0.21091 (10) | 0.5539 (3) | 0.0489 (6) | |
H14 | 0.2155 | 0.2458 | 0.5437 | 0.059* | |
C15 | 0.2671 (4) | 0.09958 (10) | 0.2502 (4) | 0.0589 (7) | |
H15A | 0.1333 | 0.0970 | 0.1585 | 0.088* | |
H15B | 0.3172 | 0.0660 | 0.2935 | 0.088* | |
H15C | 0.3474 | 0.1154 | 0.1954 | 0.088* | |
H3 | 0.373 (3) | 0.2669 (10) | 0.349 (2) | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0865 (18) | 0.0589 (17) | 0.0603 (16) | 0.0004 (13) | 0.0353 (14) | 0.0137 (13) |
N2 | 0.0457 (12) | 0.0447 (12) | 0.0331 (10) | −0.0031 (9) | 0.0098 (9) | 0.0067 (9) |
N3 | 0.0462 (13) | 0.0476 (12) | 0.0294 (10) | −0.0062 (10) | 0.0041 (9) | 0.0065 (9) |
O1 | 0.158 (2) | 0.0905 (17) | 0.0585 (14) | −0.0072 (15) | 0.0554 (15) | 0.0135 (12) |
O2 | 0.222 (3) | 0.0534 (15) | 0.1011 (19) | 0.0010 (17) | 0.084 (2) | 0.0192 (14) |
O3 | 0.0561 (11) | 0.0503 (10) | 0.0322 (9) | −0.0084 (8) | 0.0035 (8) | −0.0006 (8) |
C1 | 0.0468 (15) | 0.0457 (15) | 0.0461 (14) | 0.0031 (12) | 0.0209 (12) | 0.0088 (12) |
C2 | 0.0510 (16) | 0.0525 (16) | 0.0385 (13) | 0.0020 (12) | 0.0193 (12) | −0.0007 (12) |
C3 | 0.0493 (15) | 0.0384 (13) | 0.0427 (14) | 0.0021 (11) | 0.0172 (12) | −0.0015 (11) |
C4 | 0.0350 (13) | 0.0400 (14) | 0.0365 (13) | 0.0002 (10) | 0.0121 (11) | 0.0020 (10) |
C5 | 0.0614 (17) | 0.0467 (16) | 0.0421 (14) | −0.0016 (12) | 0.0204 (13) | −0.0029 (12) |
C6 | 0.0657 (18) | 0.0376 (14) | 0.0555 (16) | −0.0021 (12) | 0.0255 (14) | −0.0009 (12) |
C7 | 0.0437 (14) | 0.0463 (15) | 0.0343 (13) | −0.0003 (11) | 0.0109 (11) | 0.0007 (11) |
C8 | 0.0382 (13) | 0.0418 (14) | 0.0309 (12) | 0.0019 (11) | 0.0101 (11) | −0.0012 (10) |
C9 | 0.0310 (12) | 0.0467 (15) | 0.0322 (12) | −0.0024 (10) | 0.0081 (10) | 0.0031 (10) |
C10 | 0.0331 (13) | 0.0458 (15) | 0.0479 (14) | −0.0018 (11) | 0.0113 (11) | 0.0043 (11) |
C11 | 0.0518 (17) | 0.0580 (17) | 0.0681 (19) | −0.0012 (14) | 0.0162 (15) | 0.0195 (15) |
C12 | 0.0616 (19) | 0.090 (2) | 0.0449 (16) | −0.0146 (17) | 0.0116 (14) | 0.0229 (16) |
C13 | 0.0640 (19) | 0.085 (2) | 0.0356 (14) | −0.0184 (16) | 0.0189 (13) | −0.0034 (14) |
C14 | 0.0499 (15) | 0.0561 (16) | 0.0381 (13) | −0.0060 (12) | 0.0156 (12) | −0.0016 (12) |
C15 | 0.0514 (17) | 0.0499 (16) | 0.0742 (19) | 0.0054 (13) | 0.0246 (15) | −0.0065 (14) |
N1—O1 | 1.213 (3) | C6—H6 | 0.9300 |
N1—O2 | 1.213 (3) | C7—H7 | 0.9300 |
N1—C1 | 1.468 (3) | C8—C9 | 1.494 (3) |
N2—C7 | 1.275 (3) | C9—C14 | 1.397 (3) |
N2—N3 | 1.383 (2) | C9—C10 | 1.400 (3) |
N3—C8 | 1.351 (3) | C10—C11 | 1.391 (3) |
N3—H3 | 0.900 (10) | C10—C15 | 1.504 (3) |
O3—C8 | 1.229 (2) | C11—C12 | 1.373 (4) |
C1—C6 | 1.371 (3) | C11—H11 | 0.9300 |
C1—C2 | 1.375 (3) | C12—C13 | 1.374 (4) |
C2—C3 | 1.377 (3) | C12—H12 | 0.9300 |
C2—H2 | 0.9300 | C13—C14 | 1.373 (3) |
C3—C4 | 1.391 (3) | C13—H13 | 0.9300 |
C3—H3A | 0.9300 | C14—H14 | 0.9300 |
C4—C5 | 1.387 (3) | C15—H15A | 0.9600 |
C4—C7 | 1.459 (3) | C15—H15B | 0.9600 |
C5—C6 | 1.382 (3) | C15—H15C | 0.9600 |
C5—H5 | 0.9300 | ||
O1—N1—O2 | 123.6 (3) | O3—C8—N3 | 123.2 (2) |
O1—N1—C1 | 118.5 (3) | O3—C8—C9 | 123.1 (2) |
O2—N1—C1 | 117.9 (2) | N3—C8—C9 | 113.66 (19) |
C7—N2—N3 | 114.48 (19) | C14—C9—C10 | 120.2 (2) |
C8—N3—N2 | 119.86 (18) | C14—C9—C8 | 118.7 (2) |
C8—N3—H3 | 121.8 (18) | C10—C9—C8 | 121.0 (2) |
N2—N3—H3 | 118.2 (18) | C11—C10—C9 | 116.9 (2) |
C6—C1—C2 | 121.9 (2) | C11—C10—C15 | 119.9 (2) |
C6—C1—N1 | 119.0 (2) | C9—C10—C15 | 123.1 (2) |
C2—C1—N1 | 119.1 (2) | C12—C11—C10 | 122.1 (3) |
C1—C2—C3 | 118.6 (2) | C12—C11—H11 | 119.0 |
C1—C2—H2 | 120.7 | C10—C11—H11 | 119.0 |
C3—C2—H2 | 120.7 | C11—C12—C13 | 120.9 (3) |
C2—C3—C4 | 121.0 (2) | C11—C12—H12 | 119.5 |
C2—C3—H3A | 119.5 | C13—C12—H12 | 119.5 |
C4—C3—H3A | 119.5 | C14—C13—C12 | 118.5 (3) |
C5—C4—C3 | 118.7 (2) | C14—C13—H13 | 120.8 |
C5—C4—C7 | 119.9 (2) | C12—C13—H13 | 120.8 |
C3—C4—C7 | 121.3 (2) | C13—C14—C9 | 121.4 (2) |
C6—C5—C4 | 120.7 (2) | C13—C14—H14 | 119.3 |
C6—C5—H5 | 119.7 | C9—C14—H14 | 119.3 |
C4—C5—H5 | 119.7 | C10—C15—H15A | 109.5 |
C1—C6—C5 | 119.0 (2) | C10—C15—H15B | 109.5 |
C1—C6—H6 | 120.5 | H15A—C15—H15B | 109.5 |
C5—C6—H6 | 120.5 | C10—C15—H15C | 109.5 |
N2—C7—C4 | 121.1 (2) | H15A—C15—H15C | 109.5 |
N2—C7—H7 | 119.5 | H15B—C15—H15C | 109.5 |
C4—C7—H7 | 119.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···O3i | 0.90 (1) | 1.99 (1) | 2.870 (2) | 167 (3) |
Symmetry code: (i) x+1/2, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C15H13N3O3 |
Mr | 283.28 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 298 |
a, b, c (Å) | 7.416 (1), 26.198 (3), 7.860 (2) |
β (°) | 114.206 (1) |
V (Å3) | 1392.8 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.20 × 0.18 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.981, 0.983 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7336, 2941, 1696 |
Rint | 0.046 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.059, 0.140, 1.01 |
No. of reflections | 2941 |
No. of parameters | 194 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.22, −0.23 |
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 |
N3—H3···O3i | 0.900 (10) | 1.986 (12) | 2.870 (2) | 167 (3) |
Symmetry code: (i) x+1/2, −y+1/2, z+1/2. |
Acknowledgements
Financial support from the Jiaying University research fund is gratefully 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.
Hydrazone compounds have received much attention in biological chemistry and structural chemistry in the last few years (Rasras et al., 2010; Pyta et al., 2010; Angelusiu et al., 2010; Fun et al., 2008; Singh & Singh, 2010; Ahmad et al., 2010). In the present paper, the author reports the crystal structure of the title new hydrazone compound (Fig. 1).
In the title molecule, the dihedral angle between the two benzene rings is 14.8 (2)°. The torsion angles C4—C7—N2—N3, C7—N2—N3—C8 and N2—N3—C8—C9 are 3.9 (2), 13.8 (2), and 1.5 (2)°, respectively. All the bond lengths are within normal values (Allen et al., 1987) and comparable with those of a similar hydrazone compound the author reported recently (Tang, 2010).
In the crystal structure of the compound, molecules are linked through N–H···O intermolecular hydrogen bonds (Table 1), forming chains along the a axis (Fig. 2).