Synthesis and characterization of a chiral dimeric copper(II) complex: Crystal structure of [Cu < inf > 2 < /inf > (μ-Cl) < inf > 2 < /inf > (HL) < inf > 2 < /inf > ]-H < inf > 2 < /inf > O(H < inf > 2 < /inf > L = S-(-)-2-[(2-hydroxy-1-phenyl- ethylimino)-methyl]-phenol)

Abstract

Synthesis and characterization of an optically active binuclear dichloro-bridged copper(II) complex [Cu2(μ-Cl)2(HL) 2]-H2O 1 (H2L = S-(-)-2-[(2-hydroxy-1-phenyl- ethylimino)-methyl]-phenol) of a Schiff-base derived from salicylaldehyde and (S)-(+)-2-phenylglycinol are described. Compound 1 crystallizes in the orthorhombic chiral P212121 space group with Z = 4, a =10·21(2), b=11·574(3), c = 25·364(9). Each copper shows square pyramidal geometry with O2NCl2 coordination and the Cu2Cl2 core geometry adopts a butterfly shape. Crystals of 1 were further characterized by elemental analysis, IR, UV-visible and EPR spectroscopy and circular dichroism (CD) studies. © Indian Academy of Sciences.