Structures and Magnetic Properties of 4,6-Diacetylresorcinate-Bridged Dinuclear Copper(II) Complexes

Abstract

Abstract Dinuclear Cu(II) complexes bridged by 4,6-diacetylresorcinate (dar2−), [Cu2(dar)(bpy)2]X2 (X = ClO4− (1), BF4− (2)) and [Cu2(dar)(phen)2]X2 (X = ClO4− (3), BF4− (4)) have been prepared and studied in relation to their crystal structures and magnetic properties. The X-ray crystallography indicates that 1 and 2 have a 1-D network arrangement of the dar-bridged dinuclear units, combined by the ‘out-of-plane’ bond through the phenolic oxygen, whereas 3 has a discrete dinuclear structure. Cryomagnetic studies indicate a weak antiferromagnetic interaction (J = −20 ∼ −9.9 cm−1) between Cu(II) ions through the dar bridge.