CRYSTAL AND MOLECULAR-STRUCTURE OF AN OLIGOMERIC-1/2 COMPLEX OF COPPER(II) AZIDE WITH 4-METHYLPYRIDINE

A 1:2 complex of copper(II) azide with 4-methylpyridine has been synthesized and the crystal structure has been determined by X-ray methods. The compound crystallizes in space group P2(1)/a with a = 11.062(3), b = 19.310(6), c = 20.547(5) angstrom, beta = 90.83(2)-degrees, V = 4389(1) angstrom3, Z = 12 and R = 0.048 for 959 observed MoKalpha data. The structure is built up by oligomeric edge-sharing chains of polyhedra. With the exception of a single coordinated azido group, all other azido ligands serve to bridge neighbouring copper centers [at Cu - N bond distances of 1.94(2) to 2.76(2) angstrom] in the mu(1, 1) fashion.