Abstract Schiff-base condensation of a equimolar proportion of diacetyl-monoxime monohydrazone and 1-methylimidazole-2-carboxaldehyde in methanol gives rise to the imidazole azine, 3-(1-methylimidazol-2-yl) methylenehydrazonobutan-2-one oxime (HL). Reaction of 1: 1 stoichiometric proportion of HL with copper (II) perchlorate hexahydrate in methanol yields a dimeric oximato bridged copper compound,[Cu 2 L 2 (H 2 O) 2](ClO 4) 2 ...