A chiral twofold interpenetrated diamond-like 3D In(III) coordination network with 4,4′,4″-phosphoryltribenzoate

A novel In(III) coordination complex, [In(ptc)(H2O)]n (H3ptc = 4,4′,4″-phosphoryltribenzoic acid) (1), was synthesized under hydrothermal condition and characterized by single-crystal X-ray analysis, IR, X-ray powder diffraction (XRD), thermogravimetric analysis (TGA) and solid-state photoluminescence. Complex 1 crystallizes in a chiral P21 space group, In(III) ions are eight-coordinated and the ligand exhibits a novel and unique tetrahedral coordination mode. The complex shows intense blue emission at 435 nm with the excitation of 330 nm.