Synthesis, structural characterization, and magnetism of a butterfly-shaped hexanuclear Ni(II) complex

A new butterfly-shaped hexanuclear complex [Ni6L4H2O(C5H5N)4] · 2DMF (L = anion of N-(3-t-butylbenzoyl)-5-bromosalicylhydrazide) has been synthesized and characterized structurally and magnetically, which contains two trinuclear [Ni3L2(py)2] subunits bridged by two μ2-O(carbonyl) and one μ2-O(H2O) groups. It exhibits obvious ferromagnetic interaction owe to the central Ni(II) dimer with octahedral geometries.