Synthesis and Crystal Structure of a Novel Bis(chlorido)-bridged One-dimensional Chain-like Copper(II) Polymer

A copper(II) complex [LCu2Cl4](n) was synthesized by a new bis-Schiff base ligand containing quinoline unit, 1,4-bis[2-(4-fluorophenyl)iminomethyl-8-quinolinoxy]butane (L). X-ray crystal structure shows that it is a binuclear complex, and the crystal belongs to the triclinic system, space group P (1) over bar, with a = 9.387(2), b = 9.968(2), c = 10.291(2) angstrom, alpha = 87.532(3), beta = 63.762(2), gamma = 86.628(3)degrees, V= 862.1(3) angstrom(3), z = 1, D-c= 1.640 Mg/m(3), F(OOO) = 428, R = 0.0416 and wR = 0.1141. Each Cu(II) metal ion coordinates with a quinoline N atom, an imine N atom, an ether oxygen atom and three chlorides, forming a distorted six-coordinated octahedronal structure. Each copper(II) complexation unit links with one of the adjacent ligand copper complexation units through the chlorido bridging groups, thus generating an infinite one-dimensional chain structure. Such 1D chains further construct a 2D network structure by pi-pi stacking interactions.