Synthesis, structure, and magnetic properties of a novel mixed-bridged heterometal tetranuclear complex [Mn2Ni2(MeOSalen)2(μ1,1-N3)2(N3)2]

The first heterometal tetranuclear complex with alternating azido and phenoxo bridges, [Mn2Ni2(MeOSalen)2(μ1,1-N3)2(N3)2] (MeOSalenH2 = bis(3-methoxy)salicylideneimine), was synthesized and structurally characterized by X-ray crystallography and spectroscopic methods. Magnetic studies suggest there is a ferromagnetic interaction between the μ1,1-azido-bridged Mn(II) ions with J = +2.11 cm−1, while the Ni(II) ions are diamagnetic in the tetranuclear system.