Materials Data on UCoNiGe2 by Materials Project

Abstract

UCoNiGe2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. U is bonded in a 12-coordinate geometry to four equivalent Co, four equivalent Ni, and eight Ge atoms. All U–Co bond lengths are 3.15 Å. All U–Ni bond lengths are 3.14 Å. There are four shorter (3.10 Å) and four longer (3.18 Å) U–Ge bond lengths. Co is bonded in a 9-coordinate geometry to four equivalent U and five Ge atoms. There are one shorter (2.32 Å) and four longer (2.38 Å) Co–Ge bond lengths. Ni is bonded in a 4-coordinate geometry to four equivalent U and four equivalent Ge atoms. All Ni–Ge bond lengths are 2.42 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent U and four equivalent Co atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent U, one Co, and four equivalent Ni atoms.