Ion exchange synthesis and structure of new delafossite-type CuInO2

New delafossite-type CuInO2 was synthesized by ion exchange reaction of CuCl with alpha -NaFeO2-type NaInO2 or with alpha- LiFeO2-type LiInO2. According to die XRD, after 144h the main product obtained at 623 K was CuInO2 in either starting material. Lattice parameters of CuInO2 derived from NaInO2 or LiInO2 as determined by Rietveld analysis, are a = 329.01pm, c = 1738.8 pm, and a = 329.22 pm, c = 1738.8 pm, respectively.