Synthesis, structure and magnetic property of a dinuclear cobalt(II/III) complex with a reduced Schiff base ligand

A dinuclear mixed valence cobalt(III/II) complex with a compartmental reduced Schiff base ligand has been synthesized and characterized. Variable temperature (2–300 K) magnetic susceptibility (χ) data is compatible with a Curie-Weiss paramagnet. [Display omitted] •Synthesis of a dinuclear mixed valence cobalt(II/III) complex with a compartmental reduced Schiff base ligand.•Confirmation of structures by single crystal X-ray diffraction.•Investigation of its magnetic properties. A dinuclear mixed valence cobalt(II/III) complex, [(N3)CoIIIL(µ-CH3COO)CoII(N3)]∙CH3OH with a N2O4 donor compartmental reduced Schiff base ligand, H2L [(1,3-propanediyl)bis(iminomethylene)bis(6-ethoxyphenol)], has been synthesized and characterized by spectral and elemental analyses. Cobalt(III) is placed in the inner N2O2 compartment whereas cobalt(II) is present in the outer O4 compartment of the ligand. Structure of the complex is confirmed by single crystal X-ray crystallography. The magnetic susceptibility measurement confirms that the complex belongs to localized class-I mixed valence system with isolated S = 3/2 ion and shows Curie-Weiss paramagnetism.