Copper–Zinc Oxide Catalysts. VII. Zn(NH₃)_0.7(H₂ O)_0.3Cu(CN)₃

The structure of a new Zn–Cu bimetallic compound poly[ammineaquadi-μ₂-cyano-μ₃-cyano­copper(I)zinc(II)], [ZnCu(CN)₃(NH₃)_0.7(H₂O)_0.3]_n, is built up of infinite double sheets. Each sheet corresponds to a hexagonal network, with Zn and Cu atoms occupying alternate corners of the hexagons and cyano groups forming the edges. They are connected into pairs by weaker Cu—C bonds completing the trigonal pyramidal coordination geometry of copper(I). One of the cyano groups is μ₃, forming a connection between two Cu and one Zn atom. The Cu—C bonds are not symmetrical [1.966 (8) and 2.458 (8) Å]. The Zn atom is coordinated by three N-bonded cyano groups and one terminal ligand which consists of a water (30%) and an ammonia molecule (70%).

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