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Acta Cryst. (2011). E67, o160    [ doi:10.1107/S1600536810052268 ]

(E)-2-Fluoro-N'-(4-nitrobenzylidene)benzohydrazide

H.-Y. Wu, H.-Y. Ban, J.-B. Wang and L.-H. Zhang

Abstract top

In the title hydrazone compound, C14H10FN3O3, the dihedral angle between the two substituted benzene rings is 13.7 (3)°. The molecule exists in a trans configuration with respect to the central methylidene unit. In the crystal, molecules are linked through intermolecular N-H...O hydrogen bonds, forming chains along the a axis.

Comment top

Hydrazone compounds derived from the condensation of aldehydes with hydrazides have been demonstrated to possess excellent biological activities (Zhong et al., 2007; Raj et al., 2007; Jimenez-Pulido et al., 2008). Due to the easy synthesis of such compounds, a large number of hydrazone compounds have been synthesized and structurally characterized (Yehye et al., 2008; Fun, Patil, Jebas et al., 2008; Fun, Patil, Rao et al., 2008; Yang et al., 2008; Ejsmont et al., 2008). Recently, we have reported a few such compounds (Ban, 2010; Ban & Li, 2008a,b; Li & Ban, 2009a,b). We report here the crystal structure of the title new compound.

In the title hydrazone compound, Fig. 1, the dihedral angle between the two substituted benzene rings C1—C6 and C9—C14 is 13.7 (3)°. The molecule exists in a trans configuration with respect to the central methylidene unit.

In the crystal structure, molecules are linked through intermolecular N—H···O hydrogen bonds (Table 1), forming chains along the a axis (Fig. 2).

Related literature top

For the biological activity of hydrazones, see: Zhong et al. (2007); Raj et al. (2007); Jimenez-Pulido et al. (2008). For related structures, see: Ban (2010); Ban & Li (2008a,b); Li & Ban (2009a,b); Yehye et al. (2008); Fun, Patil, Jebas et al. (2008); Fun, Patil, Rao et al. (2008); Yang et al. (2008); Ejsmont et al. (2008).

Experimental top

The title compound was prepared by refluxing 4-nitrobenzaldehyde (1.0 mol) with 2-fluorobenzohydrazide (1.0 mol) in methanol (100 ml). Excess methanol was removed from the mixture by distillation. A colourless solid product was filtered, and washed three times with methanol. Colourless block-shaped crystals of the title compound were obtained from a methanol solution by slow evaporation in air.

Refinement top

Atom H3A was located in a difference Fourier map and refined isotropically, with the N—H distance restrained to 0.90 (1) Å. The remaining H atoms were placed in calculated positions (C—H = 0.93 Å) and refined as riding with Uiso(H) = 1.2Ueq(C).

Computing details top

Data collection: SMART (Bruker, 1998); cell refinement: 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).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title compound, showing 30% probability displacement ellipsoids for the non-hydrogen atoms.
[Figure 2] Fig. 2. Packing diagram of the title compound, viewed along the c axis. Hydrogen bonds are shown as dashed lines.
(E)-2-Fluoro-N'-(4-nitrobenzylidene)benzohydrazide top
Crystal data top
C14H10FN3O3F(000) = 592
Mr = 287.25Dx = 1.468 Mg m−3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 680 reflections
a = 7.077 (2) Åθ = 2.5–24.5°
b = 25.718 (4) ŵ = 0.12 mm−1
c = 7.6844 (17) ÅT = 298 K
β = 111.640 (3)°Block, colourless
V = 1300.1 (5) Å30.17 × 0.15 × 0.15 mm
Z = 4
Data collection top
Bruker SMART CCD area-detector
diffractometer		2810 independent reflections
Radiation source: fine-focus sealed tube1155 reflections with I > 2σ(I)
graphiteRint = 0.074
ω scansθmax = 27.0°, θmin = 3.0°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)		h = −9→8
Tmin = 0.981, Tmax = 0.983k = −32→27
6999 measured reflectionsl = −5→9
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)] = 0.067Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.173H atoms treated by a mixture of independent and constrained refinement
S = 0.98 w = 1/[σ2(Fo2) + (0.0571P)2]
where P = (Fo2 + 2Fc2)/3
2810 reflections(Δ/σ)max < 0.001
193 parametersΔρmax = 0.25 e Å−3
1 restraintΔρmin = −0.22 e Å−3
Crystal data top
C14H10FN3O3V = 1300.1 (5) Å3
Mr = 287.25Z = 4
Monoclinic, P21/nMo Kα radiation
a = 7.077 (2) ŵ = 0.12 mm−1
b = 25.718 (4) ÅT = 298 K
c = 7.6844 (17) Å0.17 × 0.15 × 0.15 mm
β = 111.640 (3)°
Data collection top
Bruker SMART CCD area-detector
diffractometer		2810 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)		1155 reflections with I > 2σ(I)
Tmin = 0.981, Tmax = 0.983Rint = 0.074
6999 measured reflectionsθmax = 27.0°
Refinement top
R[F2 > 2σ(F2)] = 0.067H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.173Δρmax = 0.25 e Å−3
S = 0.98Δρmin = −0.22 e Å−3
2810 reflectionsAbsolute structure: ?
193 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
F10.2225 (4)0.24829 (9)0.4967 (3)0.0822 (8)
N10.2495 (5)0.48648 (15)−0.5057 (5)0.0631 (10)
N20.2488 (4)0.29033 (11)0.0113 (4)0.0432 (8)
N30.2828 (5)0.25789 (11)0.1631 (4)0.0464 (8)
O10.2201 (5)0.47230 (12)−0.6636 (4)0.0978 (12)
O20.2646 (6)0.53203 (12)−0.4634 (5)0.1069 (13)
O30.0937 (4)0.19271 (9)−0.0144 (3)0.0547 (8)
C10.2637 (5)0.44701 (14)−0.3635 (5)0.0438 (9)
C20.2406 (6)0.39574 (14)−0.4128 (5)0.0486 (10)
H20.21830.3855−0.53480.058*
C30.2511 (5)0.35963 (14)−0.2776 (5)0.0465 (10)
H30.23250.3246−0.30940.056*
C40.2891 (5)0.37471 (13)−0.0952 (5)0.0374 (8)
C50.3140 (5)0.42716 (14)−0.0505 (5)0.0474 (10)
H50.34190.43760.07230.057*
C60.2981 (5)0.46400 (13)−0.1853 (5)0.0494 (10)
H60.31030.4993−0.15640.059*
C70.3085 (5)0.33691 (14)0.0518 (5)0.0448 (10)
H70.36520.34700.17660.054*
C80.2013 (5)0.21010 (13)0.1394 (5)0.0404 (9)
C90.2475 (5)0.17828 (13)0.3115 (5)0.0361 (8)
C100.2603 (5)0.19735 (14)0.4817 (5)0.0484 (10)
C110.3020 (6)0.16713 (18)0.6393 (5)0.0627 (12)
H110.31000.18150.75290.075*
C120.3310 (6)0.11534 (18)0.6222 (6)0.0658 (12)
H120.35970.09400.72660.079*
C130.3190 (5)0.09383 (15)0.4558 (6)0.0595 (11)
H130.33990.05840.44780.071*
C140.2757 (5)0.12515 (13)0.2996 (6)0.0489 (10)
H140.26530.11050.18580.059*
H3A0.374 (4)0.2695 (13)0.272 (3)0.073*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
F10.130 (2)0.0599 (16)0.0721 (18)−0.0116 (15)0.0550 (17)−0.0204 (13)
N10.084 (3)0.055 (2)0.051 (2)0.003 (2)0.026 (2)0.009 (2)
N20.0457 (18)0.0456 (19)0.0314 (18)−0.0036 (15)0.0062 (15)0.0066 (15)
N30.058 (2)0.0411 (19)0.0300 (17)−0.0090 (16)0.0044 (15)0.0041 (16)
O10.163 (3)0.085 (2)0.053 (2)−0.007 (2)0.048 (2)0.0113 (18)
O20.190 (4)0.051 (2)0.084 (3)0.003 (2)0.054 (2)0.0158 (19)
O30.0665 (18)0.0531 (17)0.0306 (15)−0.0094 (14)0.0017 (13)−0.0006 (13)
C10.049 (2)0.043 (2)0.039 (2)0.0089 (18)0.0158 (19)0.0104 (19)
C20.060 (3)0.051 (3)0.032 (2)0.002 (2)0.0141 (19)−0.0050 (19)
C30.055 (2)0.041 (2)0.040 (2)0.0008 (18)0.014 (2)−0.0036 (19)
C40.035 (2)0.038 (2)0.036 (2)0.0016 (16)0.0090 (17)0.0017 (17)
C50.062 (3)0.041 (2)0.036 (2)−0.0033 (19)0.015 (2)−0.0045 (18)
C60.065 (3)0.034 (2)0.050 (3)0.0008 (19)0.023 (2)−0.0022 (19)
C70.045 (2)0.054 (2)0.033 (2)−0.0012 (19)0.0104 (18)−0.0002 (19)
C80.045 (2)0.040 (2)0.033 (2)0.0036 (18)0.0109 (18)0.0010 (18)
C90.037 (2)0.039 (2)0.031 (2)−0.0037 (16)0.0101 (16)−0.0021 (16)
C100.056 (2)0.043 (2)0.047 (3)−0.010 (2)0.020 (2)−0.010 (2)
C110.070 (3)0.082 (3)0.035 (2)−0.023 (3)0.018 (2)−0.003 (2)
C120.058 (3)0.076 (3)0.054 (3)−0.008 (2)0.009 (2)0.025 (3)
C130.053 (3)0.053 (3)0.070 (3)0.003 (2)0.020 (2)0.015 (2)
C140.043 (2)0.046 (3)0.056 (3)0.0008 (18)0.016 (2)0.004 (2)
Geometric parameters (Å, °) top
F1—C101.350 (4)C4—C71.458 (5)
N1—O21.210 (4)C5—C61.377 (5)
N1—O11.210 (4)C5—H50.9300
N1—C11.468 (5)C6—H60.9300
N2—C71.270 (4)C7—H70.9300
N2—N31.381 (4)C8—C91.485 (4)
N3—C81.341 (4)C9—C101.368 (4)
N3—H3A0.900 (10)C9—C141.389 (4)
O3—C81.230 (4)C10—C111.376 (5)
C1—C21.365 (4)C11—C121.361 (5)
C1—C61.370 (4)C11—H110.9300
C2—C31.375 (5)C12—C131.367 (5)
C2—H20.9300C12—H120.9300
C3—C41.382 (4)C13—C141.383 (5)
C3—H30.9300C13—H130.9300
C4—C51.387 (4)C14—H140.9300
O2—N1—O1121.8 (4)N2—C7—C4120.8 (3)
O2—N1—C1119.7 (4)N2—C7—H7119.6
O1—N1—C1118.5 (4)C4—C7—H7119.6
C7—N2—N3115.1 (3)O3—C8—N3123.1 (3)
C8—N3—N2120.4 (3)O3—C8—C9120.7 (3)
C8—N3—H3A124 (2)N3—C8—C9116.2 (3)
N2—N3—H3A115 (2)C10—C9—C14117.1 (3)
C2—C1—C6123.0 (3)C10—C9—C8124.7 (3)
C2—C1—N1119.6 (3)C14—C9—C8118.3 (3)
C6—C1—N1117.5 (3)F1—C10—C9118.9 (3)
C1—C2—C3118.4 (3)F1—C10—C11117.3 (4)
C1—C2—H2120.8C9—C10—C11123.8 (4)
C3—C2—H2120.8C12—C11—C10117.3 (4)
C2—C3—C4120.8 (3)C12—C11—H11121.3
C2—C3—H3119.6C10—C11—H11121.3
C4—C3—H3119.6C11—C12—C13121.8 (4)
C3—C4—C5118.9 (3)C11—C12—H12119.1
C3—C4—C7121.7 (3)C13—C12—H12119.1
C5—C4—C7119.3 (3)C12—C13—C14119.6 (4)
C6—C5—C4121.0 (3)C12—C13—H13120.2
C6—C5—H5119.5C14—C13—H13120.2
C4—C5—H5119.5C13—C14—C9120.5 (4)
C1—C6—C5117.8 (3)C13—C14—H14119.8
C1—C6—H6121.1C9—C14—H14119.8
C5—C6—H6121.1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N3—H3A···O3i0.90 (1)2.04 (3)2.928 (3)168 (3)
Symmetry codes: (i) x+1/2, −y+1/2, z+1/2.
Table 1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N3—H3A···O3i0.90 (1)2.04 (3)2.928 (3)168 (3)
Symmetry codes: (i) x+1/2, −y+1/2, z+1/2.
Acknowledgements top

The authors acknowledge the support of the Scientific and Technological Training Fund for undergraduates from the University of Science and Technology Liaoning.

references
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