supplementary materials


Acta Cryst. (2008). E64, o2319    [ doi:10.1107/S1600536808036386 ]

2-Chloro-N-[4-(dimethylamino)benzylidene]aniline

J. Li, Z.-P. Liang and X.-S. Tai

Abstract top

In the title molecule, C15H15ClN2, the dihedral angle between the aromatic is 64.1 (2)°.

Comment top

Schiff base compounds have been used as fine chemicals and medical substrates and they are important ligands in coordination chemistry due to their ease of preparation and their ability to be modified both electronically and sterically. In this paper, the structure of the title compound, (I), is reported. The molecular structure of (I) is illustrated in Fig. 1. The bond lengths and angles in the title molecule are similar to the related compound 4-chloro-N-[4-(dimethylamino)benzylidene]aniline (You et al., 2004). The 4-(Dimethylamino)benzylidene system is nearly planar to within 0.035 (3) A°. 2-Chlorobenzenamine system is nearly planar to within 0.060 (3) A°. The dihedral angle between these two systems is 67.0 (2) °.

Related literature top

For a related compound, see: You et al. (2004).

Experimental top

A mixture of 4-(dimethylamino)benzaldehyde (0.01 mol) and 2-chlorobenzenamine (0.01 mol) in ethanol (10 ml) was refluxed for 2 h. After cooling, filtration and drying, the title compound was obtained. 10 mg of (I) were dissolved in 15 ml of ethanol, and the solution was kept at room temperature for 5 d. Natural evaporation gave light yellow single crystals of the title compound, suitable for X-ray analysis.

Refinement top

H atoms were initially located from difference maps and then refined in a riding model with C—H = 0.93–0.96 Å and Uiso(H) = 1.2Ueq(C) or 1.5Ueq(methyl C).

Computing details top

Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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 (I), drawn with 30% probability ellipsoids.
2-Chloro-N-[4-(dimethylamino)benzylidene]aniline top
Crystal data top
C15H15ClN2F(000) = 544
Mr = 258.74Dx = 1.297 Mg m3
Orthorhombic, P212121Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2ac 2abCell parameters from 1182 reflections
a = 7.7301 (8) Åθ = 2.9–20.1°
b = 12.2016 (18) ŵ = 0.27 mm1
c = 14.047 (2) ÅT = 298 K
V = 1325.0 (3) Å3Block, light yellow
Z = 40.45 × 0.38 × 0.30 mm
Data collection top
Bruker SMART CCD
diffractometer
2318 independent reflections
Radiation source: fine-focus sealed tube1391 reflections with I > 2σ(I)
graphiteRint = 0.054
φ and ω scansθmax = 25.0°, θmin = 2.2°
Absorption correction: multi-scan
(SADABS; Bruker, 1997)
h = 99
Tmin = 0.888, Tmax = 0.923k = 1413
5507 measured reflectionsl = 916
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.045H-atom parameters constrained
wR(F2) = 0.105 w = 1/[σ2(Fo2) + (0.0377P)2]
where P = (Fo2 + 2Fc2)/3
S = 1.02(Δ/σ)max < 0.001
2318 reflectionsΔρmax = 0.18 e Å3
165 parametersΔρmin = 0.18 e Å3
0 restraintsAbsolute structure: Flack (1983), 1358 Friedel pairs
Primary atom site location: structure-invariant direct methodsFlack parameter: 0.07 (10)
Crystal data top
C15H15ClN2V = 1325.0 (3) Å3
Mr = 258.74Z = 4
Orthorhombic, P212121Mo Kα radiation
a = 7.7301 (8) ŵ = 0.27 mm1
b = 12.2016 (18) ÅT = 298 K
c = 14.047 (2) Å0.45 × 0.38 × 0.30 mm
Data collection top
Bruker SMART CCD
diffractometer
2318 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 1997)
1391 reflections with I > 2σ(I)
Tmin = 0.888, Tmax = 0.923Rint = 0.054
5507 measured reflectionsθmax = 25.0°
Refinement top
R[F2 > 2σ(F2)] = 0.045H-atom parameters constrained
wR(F2) = 0.105Δρmax = 0.18 e Å3
S = 1.02Δρmin = 0.18 e Å3
2318 reflectionsAbsolute structure: Flack (1983), 1358 Friedel pairs
165 parametersFlack parameter: 0.07 (10)
0 restraints
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
Cl11.22788 (14)1.11816 (8)0.13149 (7)0.0753 (4)
N10.9918 (4)0.9322 (2)0.09661 (18)0.0513 (8)
N20.8770 (4)0.7449 (2)0.32629 (18)0.0555 (8)
C11.0238 (4)0.8391 (3)0.0595 (2)0.0477 (9)
H11.07880.78610.09620.057*
C20.9776 (4)0.8127 (2)0.0381 (2)0.0436 (9)
C30.8837 (4)0.8839 (3)0.0949 (2)0.0460 (9)
H30.84390.94910.06860.055*
C40.8472 (5)0.8618 (3)0.1884 (2)0.0478 (9)
H40.78150.91120.22350.057*
C50.9077 (4)0.7656 (3)0.2319 (2)0.0441 (9)
C60.9993 (5)0.6920 (3)0.1744 (2)0.0498 (9)
H61.03790.62610.20020.060*
C71.0331 (5)0.7156 (3)0.0807 (2)0.0510 (10)
H71.09490.66520.04450.061*
C80.7854 (5)0.8221 (3)0.3849 (2)0.0719 (12)
H8A0.85280.88780.39130.108*
H8B0.76600.79080.44670.108*
H8C0.67630.83940.35590.108*
C90.9648 (5)0.6548 (3)0.3736 (2)0.0671 (11)
H9A0.93420.58700.34320.101*
H9B0.93050.65240.43930.101*
H9C1.08760.66540.36960.101*
C101.0315 (5)0.9502 (3)0.1928 (2)0.0452 (9)
C111.1315 (4)1.0405 (3)0.2197 (2)0.0481 (9)
C121.1594 (5)1.0664 (3)0.3137 (2)0.0595 (10)
H121.22661.12690.32980.071*
C131.0873 (5)1.0020 (3)0.3841 (3)0.0654 (11)
H131.10421.01970.44780.078*
C140.9911 (5)0.9125 (3)0.3600 (3)0.0661 (11)
H140.94510.86820.40750.079*
C150.9612 (5)0.8869 (3)0.2650 (2)0.0587 (10)
H150.89320.82660.24970.070*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Cl10.0818 (8)0.0730 (7)0.0711 (6)0.0204 (6)0.0003 (6)0.0069 (5)
N10.060 (2)0.0516 (17)0.0423 (16)0.0012 (18)0.0060 (16)0.0035 (14)
N20.053 (2)0.069 (2)0.0440 (17)0.0048 (18)0.0025 (15)0.0064 (15)
C10.048 (3)0.050 (2)0.045 (2)0.0014 (19)0.0003 (19)0.0074 (17)
C20.046 (2)0.0450 (19)0.0397 (19)0.0033 (19)0.0012 (18)0.0035 (16)
C30.049 (2)0.0394 (18)0.049 (2)0.0003 (19)0.0047 (17)0.0001 (18)
C40.050 (2)0.048 (2)0.045 (2)0.0075 (17)0.0021 (18)0.0034 (17)
C50.042 (2)0.052 (2)0.0386 (19)0.0057 (18)0.0011 (17)0.0029 (18)
C60.057 (3)0.0407 (19)0.051 (2)0.005 (2)0.003 (2)0.0055 (17)
C70.056 (3)0.049 (2)0.048 (2)0.0044 (19)0.0023 (19)0.0053 (18)
C80.076 (3)0.095 (3)0.045 (2)0.004 (3)0.012 (2)0.002 (2)
C90.062 (3)0.078 (3)0.061 (2)0.007 (2)0.004 (2)0.024 (2)
C100.047 (2)0.046 (2)0.043 (2)0.0044 (19)0.0025 (19)0.0001 (17)
C110.047 (2)0.050 (2)0.047 (2)0.0046 (19)0.0041 (19)0.0020 (17)
C120.058 (3)0.063 (2)0.058 (2)0.002 (2)0.014 (2)0.009 (2)
C130.069 (3)0.081 (3)0.046 (2)0.019 (2)0.008 (2)0.008 (2)
C140.068 (3)0.080 (3)0.050 (2)0.007 (3)0.006 (2)0.007 (2)
C150.062 (3)0.057 (2)0.057 (2)0.003 (2)0.000 (2)0.001 (2)
Geometric parameters (Å, °) top
Cl1—C111.728 (3)C7—H70.9300
N1—C11.274 (3)C8—H8A0.9600
N1—C101.403 (4)C8—H8B0.9600
N2—C51.371 (4)C8—H8C0.9600
N2—C81.438 (4)C9—H9A0.9600
N2—C91.453 (4)C9—H9B0.9600
C1—C21.453 (4)C9—H9C0.9600
C1—H10.9300C10—C151.385 (4)
C2—C31.385 (4)C10—C111.398 (4)
C2—C71.395 (4)C11—C121.376 (4)
C3—C41.369 (4)C12—C131.379 (5)
C3—H30.9300C12—H120.9300
C4—C51.404 (4)C13—C141.364 (5)
C4—H40.9300C13—H130.9300
C5—C61.400 (4)C14—C151.390 (4)
C6—C71.373 (4)C14—H140.9300
C6—H60.9300C15—H150.9300
?···??
C1—N1—C10119.4 (3)N2—C8—H8C109.5
C5—N2—C8121.2 (3)H8A—C8—H8C109.5
C5—N2—C9120.1 (3)H8B—C8—H8C109.5
C8—N2—C9117.6 (3)N2—C9—H9A109.5
N1—C1—C2122.5 (3)N2—C9—H9B109.5
N1—C1—H1118.8H9A—C9—H9B109.5
C2—C1—H1118.8N2—C9—H9C109.5
C3—C2—C7116.5 (3)H9A—C9—H9C109.5
C3—C2—C1122.2 (3)H9B—C9—H9C109.5
C7—C2—C1121.2 (3)C15—C10—C11117.3 (3)
C4—C3—C2122.5 (3)C15—C10—N1122.2 (3)
C4—C3—H3118.7C11—C10—N1120.2 (3)
C2—C3—H3118.7C12—C11—C10121.8 (3)
C3—C4—C5120.9 (3)C12—C11—Cl1119.7 (3)
C3—C4—H4119.6C10—C11—Cl1118.5 (3)
C5—C4—H4119.6C11—C12—C13119.6 (3)
N2—C5—C6121.8 (3)C11—C12—H12120.2
N2—C5—C4121.2 (3)C13—C12—H12120.2
C6—C5—C4117.0 (3)C14—C13—C12119.9 (3)
C7—C6—C5121.0 (3)C14—C13—H13120.0
C7—C6—H6119.5C12—C13—H13120.0
C5—C6—H6119.5C13—C14—C15120.6 (4)
C6—C7—C2122.1 (3)C13—C14—H14119.7
C6—C7—H7119.0C15—C14—H14119.7
C2—C7—H7119.0C10—C15—C14120.8 (3)
N2—C8—H8A109.5C10—C15—H15119.6
N2—C8—H8B109.5C14—C15—H15119.6
H8A—C8—H8B109.5
C10—N1—C1—C2176.5 (3)C3—C2—C7—C61.0 (5)
N1—C1—C2—C35.2 (5)C1—C2—C7—C6176.2 (3)
N1—C1—C2—C7171.9 (3)C1—N1—C10—C1558.8 (5)
C7—C2—C3—C40.5 (5)C1—N1—C10—C11127.5 (4)
C1—C2—C3—C4176.7 (3)C15—C10—C11—C120.1 (5)
C2—C3—C4—C51.4 (5)N1—C10—C11—C12173.9 (3)
C8—N2—C5—C6178.9 (3)C15—C10—C11—Cl1177.6 (2)
C9—N2—C5—C610.8 (5)N1—C10—C11—Cl18.4 (4)
C8—N2—C5—C41.6 (5)C10—C11—C12—C130.1 (5)
C9—N2—C5—C4169.6 (3)Cl1—C11—C12—C13177.7 (3)
C3—C4—C5—N2177.6 (3)C11—C12—C13—C141.0 (6)
C3—C4—C5—C62.8 (5)C12—C13—C14—C151.6 (6)
N2—C5—C6—C7178.1 (3)C11—C10—C15—C140.6 (5)
C4—C5—C6—C72.3 (5)N1—C10—C15—C14174.4 (3)
C5—C6—C7—C20.4 (5)C13—C14—C15—C101.5 (6)
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
?—?···?????
Acknowledgements top

This work was supported by the Natural Science Foundation of Shandong Province (No. Y2007B61) and the Natural Science Foundation of Weifang University.

references
References top

Bruker (1997). SADABS, SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.

Flack, H. D. (1983). Acta Cryst. A39, 876–881.

Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.

You, X.-L., Lu, C.-R., Zhang, Y. & Zhang, D.-C. (2004). Acta Cryst. C60, o693–o695.