Materials Data on U6Co12Ge4C by Materials Project
U6Co12Ge4C crystallizes in the cubic Im-3m space group. The structure is three-dimensional. U is bonded in a distorted single-bond geometry to eight equivalent Co, four equivalent Ge, and one C atom. There are four shorter (2.65 Å) and four longer (3.11 Å) U–Co bond lengths. All U–Ge bond lengths are 3.08 Å. The U–C bond length is 2.42 Å. Co is bonded in a 12-coordinate geometry to four equivalent U, six equivalent Co, and two equivalent Ge atoms. There are four shorter (2.53 Å) and two longer (2.59 Å) Co–Co bond lengths. Both Co–Ge bond lengths are 2.50 Å. Ge is bonded to six equivalent U and six equivalent Co atoms to form GeU6Co6 cuboctahedra that share corners with six equivalent GeU6Co6 cuboctahedra, faces with six equivalent GeU6Co6 cuboctahedra, and faces with two equivalent CU6 octahedra. C is bonded to six equivalent U atoms to form CU6 octahedra that share faces with eight equivalent GeU6Co6 cuboctahedra.