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Acta Crystallogr Sect E Struct Rep Online. 2008 October 1; 64(Pt 10): o2033.
Published online 2008 September 30. doi:  10.1107/S1600536808031012
PMCID: PMC2959335

N′-[4-(Dimethyl­amino)­benzyl­idene]-4-meth­oxybenzohydrazide

Abstract

The title Schiff base compound, C17H19N3O2, was obtained from the condensation of 4-dimethyl­amino­benzaldehyde with 4-methoxy­benzohydrazide in an ethanol solution. The mol­ecule is twisted with respect to the N—N single bond [C—N—N—C = −159.27 (14)°] and the dihedral angle between the two aromatic rings is 67.1 (2)°. In the crystal structure, the mol­ecules are linked into chains along the c axis by inter­molecular N—H(...)O and C—H(...)O hydrogen bonds.

Related literature

For related structures, see: Lu et al. (2008a [triangle],b [triangle],c [triangle]); Nie (2008 [triangle]); He (2008 [triangle]); Shi et al. (2007 [triangle]). For bond-length data, see: Allen et al. (1987 [triangle]).

An external file that holds a picture, illustration, etc.
Object name is e-64-o2033-scheme1.jpg

Experimental

Crystal data

  • C17H19N3O2
  • M r = 297.35
  • Monoclinic, An external file that holds a picture, illustration, etc.
Object name is e-64-o2033-efi1.jpg
  • a = 11.922 (4) Å
  • b = 13.224 (5) Å
  • c = 9.756 (4) Å
  • β = 91.469 (6)°
  • V = 1537.6 (10) Å3
  • Z = 4
  • Mo Kα radiation
  • μ = 0.09 mm−1
  • T = 298 (2) K
  • 0.23 × 0.23 × 0.20 mm

Data collection

  • Bruker APEXII CCD area-detector diffractometer
  • Absorption correction: multi-scan (SADABS; Sheldrick, 2004 [triangle]) T min = 0.981, T max = 0.983
  • 8744 measured reflections
  • 3296 independent reflections
  • 2507 reflections with I > 2σ(I)
  • R int = 0.020

Refinement

  • R[F 2 > 2σ(F 2)] = 0.043
  • wR(F 2) = 0.121
  • S = 1.03
  • 3296 reflections
  • 205 parameters
  • 1 restraint
  • H atoms treated by a mixture of independent and constrained refinement
  • Δρmax = 0.14 e Å−3
  • Δρmin = −0.18 e Å−3

Data collection: APEX2 (Bruker, 2004 [triangle]); cell refinement: SAINT (Bruker, 2004 [triangle]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 [triangle]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 [triangle]); molecular graphics: SHELXTL (Sheldrick, 2008 [triangle]); software used to prepare material for publication: SHELXTL.

Table 1
Hydrogen-bond geometry (Å, °)

Supplementary Material

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536808031012/ci2684sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536808031012/ci2684Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

Acknowledgments

The author thanks the Scientific Research Foundation of Shaanxi University of Technology for financial support (project No. SLGQD0708).

supplementary crystallographic information

Comment

As part of our investigation of the crystal structures of Schiff bases derived from the condensation of aldehydes with benzohydrazides (Lu et al., 2008a,b,c), we report here the crystal structure of the title new Schiff base compound.

In the title molecule (Fig. 1), the bond lengths have normal values (Allen et al., 1987), and are comparable to those observed in similar compounds (Nie, 2008; He, 2008; Shi et al., 2007). The dihedral angle between the two aromatic rings is 67.1 (2)°, indicating that the molecule is twisted. The methoxy group is coplanar with the attached ring [C15—O2—C12—C13 = 0.8 (2)°]. The dimethylamino group is almost coplanar with the attached ring [C16—N3—C1—C2 = 3.8 (2)° and C17—N3—C1—C6 = 8.7 (3)°]. The C7–N1—N2—C8 torsion angle [-159.27 (14)°] indicates that the molecule is twisted about the N1—N2 bond.

In the crystal structure, the molecules are linked into chains (Fig. 2) running along the c axis by intermolecular N—H···O and C—H···O hydrogen bonds (Table 1).

Experimental

The title compound was prepared by the Schiff base condensation of 4-dimethylaminobenzaldehyde (0.1 mol) and 4-methoxybenzohydrazide (0.1 mol) in 95% ethanol (50 ml). The excess ethanol was removed by distillation. The colourless solid obtained was filtered and washed with ethanol. Single crystals suitable for X-ray diffraction were obtained by slow evaporation of a 95% ethanol solution at room temperature.

Refinement

The imino H atom was located in a difference map and refined with a N—H distance restraint of 0.90 (1) Å and a fixed Uiso of 0.08 Å2. The other H atoms were positioned geometrically (C—H = 0.93–0.96 Å) and refined using a riding model, with Uiso(H) = 1.2Ueq(C) and 1.5Ueq(Cmethyl). A rotating group model was used for methyl groups.

Figures

Fig. 1.
The molecular structure of the title compound, showing 30% probability displacement ellipsoids and the atom-numbering scheme.
Fig. 2.
The crystal packing of the title compound, showing N—H···O hydrogen-bonded (dashed lines) chains running along the c axis. C-bound H atoms have been omitted for clarity.

Crystal data

C17H19N3O2F(000) = 632
Mr = 297.35Dx = 1.284 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 3161 reflections
a = 11.922 (4) Åθ = 2.5–27.2°
b = 13.224 (5) ŵ = 0.09 mm1
c = 9.756 (4) ÅT = 298 K
β = 91.469 (6)°Block, colourless
V = 1537.6 (10) Å30.23 × 0.23 × 0.20 mm
Z = 4

Data collection

Bruker APEXII CCD area-detector diffractometer3296 independent reflections
Radiation source: fine-focus sealed tube2507 reflections with I > 2σ(I)
graphiteRint = 0.020
ω scansθmax = 27.0°, θmin = 2.3°
Absorption correction: multi-scan (SADABS; Sheldrick, 2004)h = −14→14
Tmin = 0.981, Tmax = 0.983k = −16→14
8744 measured reflectionsl = −12→12

Refinement

Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.043Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.121H atoms treated by a mixture of independent and constrained refinement
S = 1.03w = 1/[σ2(Fo2) + (0.0597P)2 + 0.2298P] where P = (Fo2 + 2Fc2)/3
3296 reflections(Δ/σ)max = 0.001
205 parametersΔρmax = 0.15 e Å3
1 restraintΔρmin = −0.18 e Å3

Special details

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 > 2sigma(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)

xyzUiso*/Ueq
N10.23023 (11)0.86331 (9)0.18617 (12)0.0451 (3)
N20.27424 (11)0.77478 (9)0.24111 (11)0.0441 (3)
N30.06781 (13)1.32361 (10)0.12512 (17)0.0665 (4)
O10.29961 (10)0.70488 (7)0.03342 (9)0.0520 (3)
O20.46299 (11)0.33676 (8)0.39093 (12)0.0612 (3)
C10.10930 (12)1.23056 (11)0.15842 (16)0.0473 (4)
C20.07206 (14)1.14376 (12)0.09023 (18)0.0552 (4)
H20.01811.14950.02010.066*
C30.11325 (14)1.05048 (11)0.12429 (17)0.0517 (4)
H30.08740.99430.07570.062*
C40.19240 (12)1.03716 (10)0.22919 (14)0.0428 (3)
C50.22870 (14)1.12314 (11)0.29766 (16)0.0523 (4)
H50.28091.11660.36960.063*
C60.19031 (14)1.21761 (12)0.26300 (17)0.0545 (4)
H60.21851.27380.30960.065*
C70.23746 (12)0.93903 (11)0.26614 (15)0.0440 (3)
H70.27300.93110.35140.053*
C80.30424 (12)0.69893 (10)0.15876 (13)0.0389 (3)
C90.34473 (11)0.60594 (10)0.22874 (13)0.0371 (3)
C100.41496 (13)0.54231 (11)0.15756 (14)0.0468 (4)
H100.43590.55970.06950.056*
C110.45393 (14)0.45430 (11)0.21489 (16)0.0506 (4)
H110.50180.41290.16610.061*
C120.42254 (13)0.42666 (10)0.34493 (15)0.0442 (3)
C130.35380 (13)0.48939 (11)0.41792 (14)0.0452 (3)
H130.33340.47190.50620.054*
C140.31545 (12)0.57821 (10)0.35951 (14)0.0421 (3)
H140.26890.62030.40910.051*
C150.43137 (17)0.30433 (13)0.52240 (19)0.0676 (5)
H15A0.45270.35460.58910.101*
H15B0.46830.24170.54440.101*
H15C0.35160.29470.52300.101*
C16−0.02077 (16)1.33522 (15)0.0240 (2)0.0727 (6)
H16A0.00881.3263−0.06580.109*
H16B−0.05261.40160.03110.109*
H16C−0.07781.28550.03910.109*
C170.1166 (2)1.41355 (13)0.1829 (2)0.0810 (6)
H17A0.11161.41150.28090.121*
H17B0.07681.47160.14810.121*
H17C0.19391.41780.15840.121*
H2A0.2875 (17)0.7721 (14)0.3316 (10)0.080*

Atomic displacement parameters (Å2)

U11U22U33U12U13U23
N10.0607 (8)0.0397 (6)0.0349 (6)0.0055 (5)−0.0015 (5)0.0055 (5)
N20.0648 (8)0.0385 (6)0.0289 (6)0.0075 (6)−0.0026 (5)0.0025 (5)
N30.0689 (10)0.0429 (7)0.0867 (11)0.0069 (7)−0.0189 (8)0.0055 (7)
O10.0804 (8)0.0482 (6)0.0272 (5)−0.0012 (5)−0.0051 (5)0.0000 (4)
O20.0753 (8)0.0472 (6)0.0613 (7)0.0160 (5)0.0055 (6)0.0097 (5)
C10.0475 (8)0.0404 (8)0.0539 (9)0.0031 (6)0.0005 (7)0.0035 (7)
C20.0551 (9)0.0500 (9)0.0595 (10)−0.0008 (7)−0.0172 (8)0.0033 (7)
C30.0562 (9)0.0421 (8)0.0562 (10)−0.0031 (7)−0.0117 (7)−0.0015 (7)
C40.0487 (8)0.0404 (7)0.0393 (7)0.0024 (6)0.0020 (6)0.0027 (6)
C50.0606 (10)0.0483 (9)0.0473 (9)0.0059 (7)−0.0118 (7)−0.0031 (7)
C60.0633 (10)0.0424 (8)0.0570 (10)0.0023 (7)−0.0099 (8)−0.0065 (7)
C70.0525 (8)0.0438 (8)0.0357 (7)0.0028 (6)−0.0004 (6)0.0037 (6)
C80.0482 (8)0.0403 (7)0.0279 (7)−0.0055 (6)−0.0018 (5)−0.0009 (5)
C90.0462 (7)0.0360 (7)0.0291 (6)−0.0029 (6)−0.0012 (5)−0.0028 (5)
C100.0597 (9)0.0479 (8)0.0332 (7)0.0016 (7)0.0091 (6)−0.0009 (6)
C110.0598 (9)0.0469 (8)0.0457 (8)0.0093 (7)0.0110 (7)−0.0053 (7)
C120.0491 (8)0.0379 (7)0.0453 (8)0.0026 (6)−0.0012 (6)0.0003 (6)
C130.0572 (9)0.0453 (8)0.0334 (7)0.0016 (7)0.0048 (6)0.0045 (6)
C140.0537 (8)0.0393 (7)0.0337 (7)0.0057 (6)0.0061 (6)−0.0019 (6)
C150.0793 (12)0.0550 (10)0.0684 (12)0.0059 (9)−0.0023 (9)0.0231 (9)
C160.0609 (11)0.0672 (11)0.0896 (15)0.0183 (9)−0.0083 (10)0.0133 (10)
C170.1003 (16)0.0422 (9)0.0996 (16)0.0101 (10)−0.0138 (13)−0.0015 (10)

Geometric parameters (Å, °)

N1—C71.2710 (18)C7—H70.93
N1—N21.3851 (16)C8—C91.4814 (19)
N2—C81.3395 (17)C9—C141.3810 (19)
N2—H2A0.893 (9)C9—C101.386 (2)
N3—C11.3624 (19)C10—C111.367 (2)
N3—C171.433 (2)C10—H100.93
N3—C161.435 (2)C11—C121.381 (2)
O1—C81.2252 (16)C11—H110.93
O2—C121.3550 (17)C12—C131.377 (2)
O2—C151.413 (2)C13—C141.3784 (19)
C1—C21.394 (2)C13—H130.93
C1—C61.397 (2)C14—H140.93
C2—C31.366 (2)C15—H15A0.96
C2—H20.93C15—H15B0.96
C3—C41.385 (2)C15—H15C0.96
C3—H30.93C16—H16A0.96
C4—C51.383 (2)C16—H16B0.96
C4—C71.447 (2)C16—H16C0.96
C5—C61.370 (2)C17—H17A0.96
C5—H50.93C17—H17B0.96
C6—H60.93C17—H17C0.96
C7—N1—N2114.15 (12)C10—C9—C8117.84 (12)
C8—N2—N1120.33 (11)C11—C10—C9121.00 (13)
C8—N2—H2A121.3 (13)C11—C10—H10119.5
N1—N2—H2A118.2 (13)C9—C10—H10119.5
C1—N3—C17120.98 (15)C10—C11—C12120.25 (14)
C1—N3—C16121.12 (15)C10—C11—H11119.9
C17—N3—C16117.75 (15)C12—C11—H11119.9
C12—O2—C15117.78 (13)O2—C12—C13124.65 (14)
N3—C1—C2121.39 (14)O2—C12—C11115.72 (13)
N3—C1—C6121.65 (14)C13—C12—C11119.63 (13)
C2—C1—C6116.96 (13)C12—C13—C14119.67 (13)
C3—C2—C1121.31 (14)C12—C13—H13120.2
C3—C2—H2119.3C14—C13—H13120.2
C1—C2—H2119.3C13—C14—C9121.28 (13)
C2—C3—C4121.90 (14)C13—C14—H14119.4
C2—C3—H3119.0C9—C14—H14119.4
C4—C3—H3119.0O2—C15—H15A109.5
C5—C4—C3116.82 (13)O2—C15—H15B109.5
C5—C4—C7120.51 (13)H15A—C15—H15B109.5
C3—C4—C7122.66 (13)O2—C15—H15C109.5
C6—C5—C4122.15 (15)H15A—C15—H15C109.5
C6—C5—H5118.9H15B—C15—H15C109.5
C4—C5—H5118.9N3—C16—H16A109.5
C5—C6—C1120.82 (15)N3—C16—H16B109.5
C5—C6—H6119.6H16A—C16—H16B109.5
C1—C6—H6119.6N3—C16—H16C109.5
N1—C7—C4122.33 (13)H16A—C16—H16C109.5
N1—C7—H7118.8H16B—C16—H16C109.5
C4—C7—H7118.8N3—C17—H17A109.5
O1—C8—N2123.01 (13)N3—C17—H17B109.5
O1—C8—C9121.27 (12)H17A—C17—H17B109.5
N2—C8—C9115.72 (11)N3—C17—H17C109.5
C14—C9—C10118.16 (13)H17A—C17—H17C109.5
C14—C9—C8124.00 (12)H17B—C17—H17C109.5

Hydrogen-bond geometry (Å, °)

D—H···AD—HH···AD···AD—H···A
N2—H2A···O1i0.90 (1)1.99 (1)2.873 (2)167 (2)
C7—H7···O1i0.932.543.297 (2)139

Symmetry codes: (i) x, −y+3/2, z+1/2.

Footnotes

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CI2684).

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–S19.
  • Bruker (2004). APEX2 and SAINT Bruker AXS Inc., Madison, Wisconsin, USA.
  • He, L. (2008). Acta Cryst. E64, o82. [PMC free article] [PubMed]
  • Lu, J.-F., Min, S.-T., Ji, X.-H. & Dang, Z.-H. (2008a). Acta Cryst. E64, o1693. [PMC free article] [PubMed]
  • Lu, J.-F., Min, S.-T., Ji, X.-H. & Dang, Z.-H. (2008b). Acta Cryst. E64, o1694. [PMC free article] [PubMed]
  • Lu, J.-F., Min, S.-T., Ji, X.-H. & Dang, Z.-H. (2008c). Acta Cryst. E64, o1695. [PMC free article] [PubMed]
  • Nie, Y. (2008). Acta Cryst. E64, o471. [PMC free article] [PubMed]
  • Sheldrick, G. M. (2004). SADABS University of Göttingen, Germany.
  • Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. [PubMed]
  • Shi, X.-F., Liu, C.-Y., Liu, B. & Yuan, C.-C. (2007). Acta Cryst. E63, o1295–o1296.

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