Unprecedented Hexanuclear Cobalt(II) Nonsymmetrical Salamo-Based Coordination Compound: Synthesis, Crystal Structure, and Photophysical Properties

A novel hexanuclear Co(II) coordination compound with a nonsymmetrical Salamo-type bisoxime ligandH(4)L, namely [{Co-3(HL)(MeO)(MeOH)(2)(OAc)(2)}(2)]2MeOH, was prepared and characterized by elemental analyses, UV-vis, IR and fluorescence spectra, and X-ray single-crystal diffraction analysis. Each Co(II) is hexacoordinated, and possesses a distorted CoO6 or CoO4N2 octahedrons. The Co(II) coordination compound possesses a self-assembled infinite 2D supramolecular structure with the help of the intermolecular C-H center dot center dot center dot O<bold> </bold>interactions. Meanwhile, the photophysical properties of the Co(II) coordination compound were studied.