γ₁‐AuZn_2.1 in the Au–Zn binary system has been synthesized and its structure analyzed by single‐crystal X‐ray diffraction. It crystallizes in the trigonal space group P31m (No. 157) with ∼227 atoms per unit cell and represents a 3a × 3a × c superstructure of rhombohedrally distorted γ‐Au_5–xZn_8+y. The structure is largely tetrahedrally closed packed. The formation of γ₁‐AuZn_2.1 can be understood within the framework of a Hume‐Rothery stabilization mechanism with a valence electron concentration of 1.68 e/a (valence electrons per atom).

中文翻译：

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γ1-AuZn2.1的结构和稳定性：Au-Zn系统中与γ-黄铜有关的复杂相

γ ₁ -AuZn _2.1在的Au-Zn二元体系已被合成，其结构分析通过单晶X射线衍射。该晶体的空间三角群P 31米（第157号），每个单元电池~227原子和表示3一个× 3一个× ç rhombohedrally扭曲γ-Au构成上层建筑_{5- X}锌_{8+ ÿ}。该结构主要是四面封闭的。的γ形成₁ -AuZn _2.1 可以在Hume-Rothery稳定机制的框架中理解，其价电子浓度为1.68 e / a（每个原子的价电子）。