Synthesis and structure of di-μ-bromo-bis[(1,5-dimethyl-6-oxo-3-(2-pyridyl)verdazyl)copper(I)] †

• DOI: 10.1039/a908563g
• Publication Date: 2002-07-26T09:06:44Z
• Authors: David J. R. Brook; Spring Fornell; Bruce Noll; Gordon T. Yee; Tad H. Koch
• Keywords: Diradical

Reaction of the verdazyl precursor 1,4,5,6-tetrahydro-2,4-dimethyl-6-(2′-pyridyl)-1,2,4,5-tetrazin-3(2H)-one (pvdH3) with oxygen and copper(I) bromide in acetonitrile results precipitation crystalline diradical di-μ-bromo-bis[(1,5-dimethyl-6-oxo-3-(2-pyridyl)verdazyl)copper(I)]. The solid shows a slightly anisotropic ESR spectrum magnetic susceptibility measurements indicate weak antiferromagnetic exchange between free radicals, consistent assignment as ion coordinated to radical.