MOLECULAR-STRUCTURE AND MAGNETIC-PROPERTIES OF BIS(MU-CHLORO)BIS[7-AMINO-4-METHYL-5-AZAHEPT-3-EN-2-ONATO(1-)]DICOPPER(II)

The molecular structure and magnetic properties of the title compound along with some other solid-state and solution properties are reported. The complex formulated as (CuLCl)2 (L = singly deprotonated tridentate ligand 7-amino-4-methyl-5-azahept-3-en-2-one) is dimeric and consists of two identical CuLCl monomers wherein the copper center adopts a distorted square-pyramidal geometry. The monomers are bound together through two chloro bridges forming a four-membered planar central Cu2Cl2 ring. The complex is weakly antiferromagnetic (2J = -5 cm-1) and poorly fits to the previously reported empirical correlation linking J to the structural parameter PHI/R in this class of compounds. Crystallographic data: monoclinic, P2(1)/n, a = 6.018(1), b = 12.648(4), c = 12.877(5) angstrom, beta = 101.39(2)-degrees, R = 3.2%.