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Acta Cryst. (2009). E65, o577    [ doi:10.1107/S1600536809005753 ]

N'-(2-Methoxybenzylidene)-2-nitrobenzohydrazide

G.-J. Xiao and C. Wei

Abstract top

The title compound, C15H13N3O4, was synthesized by the reaction of equimolar quantities of 2-methoxybenzaldehyde and 2-nitrobenzohydrazide in methanol. The dihedral angle between the two substituted benzene rings is 68.3 (2)°. In the crystal structure, inversion dimers linked by pairs of N-H...O hydrogen bonds occur.

Comment top

Hydrazone compounds have received considerable attention due to their pharmacological properties (Beraldo & Gambino, 2004). In the last few years, the crystal structures and properties of a series of hydrazone compounds have been reported (Galić et al., 2001; Richardson & Bernhardt, 1999; Ali et al., 2004). As a continuation of work on these compounds, we report here the structure of the title compound, (I) Fig. 1.

In (I), the dihedral angle between the C1—C6 and C9—C14 benzene rings is 111.7 (2)° while that between the O2—N3—O3 nitro plane and the plane of the C1—C6 benzene ring is 26.7 (2)°. Bond lengths in the compound are found to have normal values (Allen et al., 1987). The methoxy group is coplanar with the C9—C14 benzene ring, with a C15—O4—C10—C11 torsion angle of -3.2 (2)°.

In the crystal packing, adjacent molecules are linked through intermolecular N1–H1···O1 hydrogen bonds (Table 1), forming dimers (Fig. 2).

Related literature top

For the pharmacological properties of hydrazone compounds, see: Beraldo & Gambino (2004). For related structures, see: Galić et al. (2001); Richardson & Bernhardt (1999); Ali et al. (2004). For bond length data, see: Allen et al. (1987).

Experimental top

The title compound was synthesized by the reaction of equimolar quantities (1.0 mmol each) of 2-methoxybenzaldehyde and 2-nitrobenzohydrazide in methanol (100 ml) for 3 h at room temperature. The solution was kept in air for a few days, forming colorless block-like crystals of the compound.

Refinement top

The N-bound H atom was located in a difference Fourier map and was refined with an N–H distance restraint of 0.90 (1) Å. C-bound H atoms were placed in calculated positions (C–H = 0.93–0.96 Å) and refined using a riding model with Uiso(H) = 1.2Ueq(C) and 1.5Ueq(C15). Crystals were small and weakly diffracting which explains the relatively low data fraction.

Computing details top

Data collection: SMART (Bruker, 2007); cell refinement: 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).

Figures top
[Figure 1] Fig. 1. The molecular structure of (I), showing 30% probability displacement ellipsoids and the atom-numbering scheme.
[Figure 2] Fig. 2. The crystal packing of (I), viewed along the a axis. Dashed lines indicate hydrogen bonds.
N'-(2-Methoxybenzylidene)-2-nitrobenzohydrazide top
Crystal data top
C15H13N3O4Z = 2
Mr = 299.28F(000) = 312
Triclinic, P1Dx = 1.338 Mg m−3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 7.491 (2) ÅCell parameters from 1428 reflections
b = 9.427 (3) Åθ = 2.8–24.9°
c = 10.977 (3) ŵ = 0.10 mm−1
α = 91.748 (4)°T = 298 K
β = 106.218 (4)°Block, colorless
γ = 92.221 (4)°0.23 × 0.23 × 0.22 mm
V = 743.1 (4) Å3
Data collection top
Bruker SMART 1000 CCD area-detector
diffractometer		3140 independent reflections
Radiation source: fine-focus sealed tube2018 reflections with I > 2σ(I)
graphiteRint = 0.022
ω scansθmax = 27.0°, θmin = 1.9°
Absorption correction: multi-scan
(SADABS; Bruker, 2001)		h = −9→9
Tmin = 0.978, Tmax = 0.979k = −12→11
6232 measured reflectionsl = −13→14
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.048Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.132H atoms treated by a mixture of independent and constrained refinement
S = 1.03 w = 1/[σ2(Fo2) + (0.0615P)2 + 0.0142P]
where P = (Fo2 + 2Fc2)/3
3140 reflections(Δ/σ)max = 0.001
203 parametersΔρmax = 0.14 e Å−3
1 restraintΔρmin = −0.20 e Å−3
Crystal data top
C15H13N3O4γ = 92.221 (4)°
Mr = 299.28V = 743.1 (4) Å3
Triclinic, P1Z = 2
a = 7.491 (2) ÅMo Kα radiation
b = 9.427 (3) ŵ = 0.10 mm−1
c = 10.977 (3) ÅT = 298 K
α = 91.748 (4)°0.23 × 0.23 × 0.22 mm
β = 106.218 (4)°
Data collection top
Bruker SMART 1000 CCD area-detector
diffractometer		3140 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2001)		2018 reflections with I > 2σ(I)
Tmin = 0.978, Tmax = 0.979Rint = 0.022
6232 measured reflectionsθmax = 27.0°
Refinement top
R[F2 > 2σ(F2)] = 0.048H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.132Δρmax = 0.14 e Å−3
S = 1.03Δρmin = −0.20 e Å−3
3140 reflectionsAbsolute structure: ?
203 parametersFlack parameter: ?
1 restraintRogers parameter: ?
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O10.6095 (2)0.83513 (13)0.54829 (12)0.0763 (4)
O20.1921 (2)0.69215 (17)0.37644 (16)0.0874 (5)
O30.1059 (2)0.54863 (19)0.2124 (2)0.1155 (7)
O40.32257 (18)1.20069 (12)0.01171 (11)0.0635 (4)
N10.4749 (2)0.90208 (15)0.35161 (13)0.0609 (4)
N20.3966 (2)0.86740 (14)0.22397 (12)0.0526 (4)
N30.2239 (2)0.60480 (19)0.30207 (19)0.0714 (5)
C10.5624 (2)0.65719 (17)0.38490 (14)0.0479 (4)
C20.4158 (2)0.56387 (18)0.32220 (16)0.0504 (4)
C30.4423 (3)0.43069 (18)0.27844 (17)0.0620 (5)
H30.34080.37090.23600.074*
C40.6193 (3)0.3869 (2)0.29785 (19)0.0686 (5)
H40.63920.29670.26900.082*
C50.7670 (3)0.4760 (2)0.35974 (18)0.0663 (5)
H50.88750.44630.37250.080*
C60.7390 (2)0.6095 (2)0.40340 (16)0.0590 (5)
H60.84110.66840.44610.071*
C70.5456 (3)0.80422 (18)0.43443 (16)0.0559 (5)
C80.3456 (2)0.97399 (17)0.15700 (15)0.0496 (4)
H80.36911.06450.19580.060*
C90.2516 (2)0.95924 (17)0.02188 (15)0.0473 (4)
C100.2377 (2)1.07927 (19)−0.05146 (15)0.0507 (4)
C110.1419 (3)1.0699 (2)−0.17899 (17)0.0675 (5)
H110.13281.1499−0.22750.081*
C120.0606 (3)0.9428 (3)−0.2335 (2)0.0777 (6)
H12−0.00410.9371−0.31930.093*
C130.0727 (3)0.8231 (2)−0.1637 (2)0.0735 (6)
H130.01700.7370−0.20200.088*
C140.1680 (3)0.8317 (2)−0.03657 (18)0.0618 (5)
H140.17630.75080.01070.074*
C150.3219 (4)1.3252 (2)−0.0573 (2)0.0835 (7)
H15A0.38221.3086−0.12270.125*
H15B0.38741.4019−0.00090.125*
H15C0.19581.3497−0.09530.125*
H10.462 (3)0.9897 (13)0.3841 (18)0.080*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.1187 (12)0.0584 (8)0.0431 (8)0.0124 (8)0.0071 (7)0.0026 (6)
O20.0841 (11)0.0920 (11)0.1047 (12)0.0271 (9)0.0521 (9)0.0251 (10)
O30.0594 (10)0.1026 (13)0.1606 (18)−0.0046 (9)−0.0059 (11)−0.0071 (12)
O40.0816 (9)0.0535 (7)0.0498 (7)−0.0058 (6)0.0095 (6)0.0122 (6)
N10.0937 (12)0.0441 (8)0.0412 (8)0.0091 (8)0.0119 (8)0.0035 (6)
N20.0670 (9)0.0485 (8)0.0426 (8)0.0070 (7)0.0149 (7)0.0036 (6)
N30.0590 (11)0.0633 (11)0.0941 (14)0.0018 (9)0.0236 (10)0.0200 (10)
C10.0598 (11)0.0455 (9)0.0382 (9)0.0046 (8)0.0122 (7)0.0101 (7)
C20.0515 (10)0.0488 (10)0.0536 (10)0.0057 (8)0.0180 (8)0.0126 (8)
C30.0713 (13)0.0459 (10)0.0673 (12)−0.0034 (9)0.0175 (10)0.0045 (9)
C40.0838 (15)0.0526 (11)0.0747 (13)0.0144 (10)0.0292 (11)0.0060 (10)
C50.0629 (12)0.0700 (13)0.0697 (13)0.0201 (10)0.0213 (10)0.0160 (10)
C60.0552 (11)0.0629 (12)0.0541 (11)0.0023 (9)0.0067 (8)0.0105 (9)
C70.0734 (12)0.0496 (10)0.0427 (10)0.0033 (9)0.0127 (8)0.0069 (8)
C80.0599 (10)0.0437 (9)0.0454 (10)0.0036 (8)0.0148 (8)0.0032 (8)
C90.0486 (9)0.0490 (10)0.0459 (9)0.0047 (7)0.0153 (7)0.0012 (8)
C100.0483 (10)0.0598 (11)0.0436 (9)0.0040 (8)0.0118 (7)0.0036 (8)
C110.0670 (12)0.0854 (15)0.0466 (11)0.0043 (11)0.0096 (9)0.0082 (10)
C120.0665 (13)0.1108 (18)0.0486 (11)0.0036 (12)0.0059 (9)−0.0106 (12)
C130.0657 (13)0.0799 (15)0.0706 (14)−0.0082 (11)0.0166 (10)−0.0269 (12)
C140.0641 (12)0.0577 (11)0.0635 (12)0.0007 (9)0.0191 (9)−0.0070 (9)
C150.1165 (18)0.0631 (13)0.0682 (14)−0.0017 (12)0.0200 (12)0.0229 (11)
Geometric parameters (Å, °) top
O1—C71.2283 (19)C5—C61.377 (3)
O2—N31.218 (2)C5—H50.9300
O3—N31.215 (2)C6—H60.9300
O4—C101.358 (2)C8—C91.453 (2)
O4—C151.416 (2)C8—H80.9300
N1—C71.333 (2)C9—C141.385 (2)
N1—N21.3828 (19)C9—C101.399 (2)
N1—H10.910 (9)C10—C111.382 (2)
N2—C81.270 (2)C11—C121.364 (3)
N3—C21.461 (2)C11—H110.9300
C1—C61.376 (2)C12—C131.375 (3)
C1—C21.386 (2)C12—H120.9300
C1—C71.496 (2)C13—C141.377 (3)
C2—C31.372 (2)C13—H130.9300
C3—C41.365 (3)C14—H140.9300
C3—H30.9300C15—H15A0.9600
C4—C51.366 (3)C15—H15B0.9600
C4—H40.9300C15—H15C0.9600
C10—O4—C15118.70 (14)N1—C7—C1118.62 (15)
C7—N1—N2121.79 (14)N2—C8—C9122.23 (15)
C7—N1—H1117.1 (13)N2—C8—H8118.9
N2—N1—H1120.3 (13)C9—C8—H8118.9
C8—N2—N1113.81 (14)C14—C9—C10118.43 (16)
O3—N3—O2124.2 (2)C14—C9—C8122.47 (16)
O3—N3—C2117.72 (19)C10—C9—C8119.04 (15)
O2—N3—C2118.09 (18)O4—C10—C11124.23 (17)
C6—C1—C2116.74 (16)O4—C10—C9115.40 (14)
C6—C1—C7117.41 (16)C11—C10—C9120.37 (17)
C2—C1—C7125.85 (16)C12—C11—C10119.7 (2)
C3—C2—C1122.53 (17)C12—C11—H11120.2
C3—C2—N3117.31 (17)C10—C11—H11120.2
C1—C2—N3120.16 (16)C11—C12—C13121.14 (19)
C4—C3—C2119.23 (18)C11—C12—H12119.4
C4—C3—H3120.4C13—C12—H12119.4
C2—C3—H3120.4C12—C13—C14119.44 (19)
C3—C4—C5119.76 (18)C12—C13—H13120.3
C3—C4—H4120.1C14—C13—H13120.3
C5—C4—H4120.1C13—C14—C9120.9 (2)
C4—C5—C6120.57 (19)C13—C14—H14119.5
C4—C5—H5119.7C9—C14—H14119.5
C6—C5—H5119.7O4—C15—H15A109.5
C1—C6—C5121.16 (18)O4—C15—H15B109.5
C1—C6—H6119.4H15A—C15—H15B109.5
C5—C6—H6119.4O4—C15—H15C109.5
O1—C7—N1121.37 (16)H15A—C15—H15C109.5
O1—C7—C1119.77 (15)H15B—C15—H15C109.5
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.91 (1)1.94 (1)2.844 (2)170 (2)
Symmetry codes: (i) −x+1, −y+2, −z+1.
Table 1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.91 (1)1.94 (1)2.844 (2)170 (2)
Symmetry codes: (i) −x+1, −y+2, −z+1.
Acknowledgements top

This work was supported by Changsha University of Science and Technology.

references
References top

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