Synthesis and characterizations of a novel 2-D organic–inorganic hybrid constructed from mixed ligands and mixed-valence copper(I/II)

A novel 2-D coordination polymer with yellow fluorescence constructed from mixed ligands and mixed-valence Cu(I/II), [Cu4ICuII(sip)2(bipy)4(H2O)2]n was synthesized and characterized by IR spectra, TGA, XPS, EPR and single-crystal X-ray diffraction. It exhibits a 2-D layer-like framework constructed from {Cu(1)}n and {Cu(2)–Cu(3)}n chains, in which four-coordinated CuII and three-coordinated CuI environments are observed.