Synthesis and structure of CsCu3TiSe4

The compound CsCu3TiSe4 has been synthesized by the reaction of the elements in a Cs2Se3 flux at 923 K. CsCu3TiSe4 crystallizes in a new structure type with two formula units in space group P21/m   of the monoclinic system. The structure comprises two-dimensional [Cu3TiSe4−]∞2 layers separated by Cs atoms. Each [Cu3TiSe4−]∞2 layer is built from CuSe4 and TiSe4 tetrahedra.