Materials Data on U(Zn10Co)2 by Materials Project

Abstract

U(CoZn10)2 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. U is bonded in a 4-coordinate geometry to sixteen Zn atoms. There are four shorter (3.04 Å) and twelve longer (3.10 Å) U–Zn bond lengths. Co is bonded to twelve Zn atoms to form CoZn12 cuboctahedra that share corners with six equivalent CoZn12 cuboctahedra, edges with eighteen equivalent ZnUZn10Co cuboctahedra, and faces with six equivalent ZnUZn10Co cuboctahedra. There are six shorter (2.49 Å) and six longer (2.73 Å) Co–Zn bond lengths. There are three inequivalent Zn sites. In the first Zn site, Zn is bonded in a 2-coordinate geometry to two equivalent U and twelve equivalent Zn atoms. All Zn–Zn bond lengths are 3.00 Å. In the second Zn site, Zn is bonded in a distorted linear geometry to two equivalent Co and ten Zn atoms. There are a spread of Zn–Zn bond distances ranging from 2.64–2.77 Å. In the third Zn site, Zn is bonded to one U, one Co, and ten Zn atoms to form distorted ZnUZn10Co cuboctahedra that share corners with fifteen equivalent ZnUZn10Co cuboctahedra, edges with two equivalent ZnUZn10Co cuboctahedra, edges with three equivalent CoZn12 cuboctahedra, a faceface with one CoZn12 cuboctahedra, and faces with fifteen equivalent ZnUZn10Co cuboctahedra. There are a spread of Zn–Zn bond distances ranging from 2.61–2.84 Å.