U6Co12Ge4C crystallizes in the cubic Im-3m space group. U(1) is bonded in a distorted single-bond geometry to eight equivalent Co(1), four equivalent Ge(1), and one C(1) atom. Co(1) is bonded in a 12-coordinate geometry to four equivalent U(1), six equivalent Co(1), and two equivalent Ge(1) atoms. Ge(1) is bonded to six equivalent U(1) and six equivalent Co(1) atoms to form GeU6Co6 cuboctahedra that share corners with six equivalent Ge(1)U6Co6 cuboctahedra, faces with six equivalent Ge(1)U6Co6 cuboctahedra, and faces with two equivalent C(1)U6 octahedra. C(1) is bonded to six equivalent U(1) atoms to form CU6 octahedra that share faces with eight equivalent Ge(1)U6Co6 cuboctahedra.
U6Co12Ge4C crystallizes in the cubic Im-3m space group. U(1) is bonded in a distorted single-bond geometry to eight equivalent Co(1), four equivalent Ge(1), and one C(1) atom. There are four shorter (2.65 Å) and four longer (3.11 Å) U(1)-Co(1) bond lengths. All U(1)-Ge(1) bond lengths are 3.08 Å. The U(1)-C(1) bond length is 2.42 Å. Co(1) is bonded in a 12-coordinate geometry to four equivalent U(1), six equivalent Co(1), and two equivalent Ge(1) atoms. There are four shorter (2.53 Å) and two longer (2.59 Å) Co(1)-Co(1) bond lengths. Both Co(1)-Ge(1) bond lengths are 2.50 Å. Ge(1) is bonded to six equivalent U(1) and six equivalent Co(1) atoms to form GeU6Co6 cuboctahedra that share corners with six equivalent Ge(1)U6Co6 cuboctahedra, faces with six equivalent Ge(1)U6Co6 cuboctahedra, and faces with two equivalent C(1)U6 octahedra. C(1) is bonded to six equivalent U(1) atoms to form CU6 octahedra that share faces with eight equivalent Ge(1)U6Co6 cuboctahedra.