Copper(II) chloride complex with bis-1,1'-(3,3-dimethyl-3,4- dihydroisoquinoline): Crystal structure

The copper chloride complex with bis-1,1'-(3,3-dimethyl-3,4- dihydroisoquinoline) (L) was synthesized and characterized by X-ray diffraction and UV/Vis and IR spectroscopy. The structure of the complex [Cu 2L2Cl4] is built of centrosymmetric binuclear molecules with a double chlorine bridge. The coordination five-vertex polyhedron of copper is a heavily distorted tetragonal pyramid with a considerably nonplanar base in which the vertices are occupied by chlorine atoms (bridging Cl(1) and Cl(1A) and terminal Cl(2)) and the nitrogen atom N(2); the axial vertex is occupied by N(1). The bond lengths, Cu-Neq (2.013(1) Å), Cu-Nax (2.392(2) Å), Cu-Clbridge (2.305(1) and 2.342(1)), and Cu-Nterm (2.251(1) Å), are markedly different. The coordinated ligand occurs in the cisoid form (the N(1)C(1)C(12)N(2) torsion angle is -32.6°). © 2008 Pleiades Publishing, Ltd.