Synthesis and crystal structure of the copper(II) valerate complex with nicotinamide

A coordination compound of copper(II) valerate with nicotinamide, [CuL(C4H9COO)(2)](2) (I), has been synthesized, and its crystal structure has been determined by X-ray crystallography. The crystals of I are triclinic: a = 9.1245(9)angstrom, b = 9.8572(6) angstrom, c = 11.0944(9) angstrom, alpha = 73.51(1)degrees, beta = 79.917(6)degrees, gamma = 72.161(7)degrees, Z = 2, space group P1. In the centrosymmetric binuclear molecule of I, the copper atoms (Cu...Cu', 2.621 angstrom) are linked through four bidentate chelating valerate ligands (av., Cu-O 1.969 angstrom). The coordination polyhedron of the Cu atom is a tetragonal pyramid with the nitrogen atom of the pyridine ring in the apical position at a longer distance (Cu-N, 2.190 angstrom).