A New Compound in the Cu‐In System – the Synthesis and Structure of Cu₁₀In₇

Abstract

Abstract A new binary phase, Cu 10 In 7 , was found during the investigation of the η ‐phase field in the Cu‐In system. Single crystals of Cu 10 In 7 were grown from a melt under an inert atmosphere. The compound crystallizes in the monoclinic space group C 2/ m with cell parameters a = 13.8453(2) Å, b = 11.8462(1) Å, c = 6.7388(1) Å and β = 91.063(1). The structure is based on a unit of face‐sharing octahedra consisting of five Cu 4 In 2 octahedra terminated by Cu 5 In octahedra at both ends. The crystal structure is closely related to the Cu 11 In 9 structure type.