Synthesis, crystal structure, and magnetic properties of two bent trinuclear Cu(II)/Ni(II) complexes of ligands derived from N-acyl-salicylhydrazides

Two bent trinuclear Cu(II)/Ni(II) complexes [Cu3(L1)2(py)2] (1) and [Ni3(L2)2(py)4] · DMF (2), where H3L1 = N-(3,5-dimethylbenzoyl)-5-bromosalicylhydrazide, H3L2 = N-(3,5-dimethyl benzoyl)-salicylhydrazide, were synthesized and structurally characterized. In complex 1, all three Cu(II) ions take distorted planar square geometry, while in complex 2, the two terminal Ni(II) ions are distorted planar square, the central Ni(II) ion is octahedral. The magnetism of complex 1 was also studied.