C11H14CI4CUN2O, orthorhombic, P2i2i2i (no. 19), a = 7.737(2) Ä, b = 10.131(2) Ä, c = 20.229(3) A, V = 1585.6 Ä 3 , Ζ = 4, Rp(F) = 0.040, wR^F*) = 0.079, Τ = 298 Κ.
DiscussionMetal complexes of Schiff bases have been extensively studied, and copper(II) complexes play a major role in both synthetic and structural research [1][2][3]. Schiff base metal complexes are one of the most important stereochemical models in transition metal coordination chemistry with their easy preparation and structural variation [4][5][6]. As an extension of our work on the structural characterization of Schiff base complexes [7], a new mononuclear copper(II) complex is reported. The Cu n ion in the title complex is four-coordinated by one Ο and one imine Ν atom of the Schiff base, and by two terminal CI atoms, giving a tetrahedral environment. All the bond lengths related to the Cu center are comparable to the corresponding values observed in other Schiff base copper(II) complexes [8][9][10]. Source of material Reagents and solvents used were of commercially available quality. A^-Dimethylethane-1,2-diamine (44.3 mg, 0.5 mmol), 3,5-dichloro-2-hydroxybenzaldehyde (95.3 mg, 0.5 mmol), and CuCl 2 · 2H2O (85.2 mg, 0.5 mmol) were stirred and refluxed in ethanol at about 351 Κ for 1 h. Then the mixture was cooled to room temperature and filtered. Prismatic crystals suitable for Xray structural determination were formed by slow evaporation of the solvent from the filtrate after about a week. Elemental analysis: found -C, 33.23 %; H, 3.45 %; N, 7.17 %; calc. forC n Hi 4 Cl4CuN20-C, 33.40 %; H, 3.57%; N, 7.08 %.
