Structure and stability of γ₁-AuZn_2.1: a γ-brass-related complex phase in the Au–Zn System

The synthesis, crystal structure and stability of the γ-brass-related complex phase γ₁-AuZn_2.1 in the Au–Zn binary system are reported. The compound has been described as consisting of two main building units, i.e. a 38-atom modified Pierce cluster and an intergrown 19-atom double icosahedron.