UThRe4 is Hexagonal Laves-derived structured and crystallizes in the trigonal P-3m1 space group. U(1) is bonded in a 16-coordinate geometry to three equivalent U(1), one Th(1), three equivalent Re(2), and nine equivalent Re(3) atoms. Th(1) is bonded in a 16-coordinate geometry to one U(1), three equivalent Th(1), three equivalent Re(1), and nine equivalent Re(3) atoms. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded to six equivalent Th(1) and six equivalent Re(3) atoms to form ReTh6Re6 cuboctahedra that share corners with twelve equivalent Re(3)Th3U3Re6 cuboctahedra, edges with six equivalent Re(1)Th6Re6 cuboctahedra, faces with two equivalent Re(2)U6Re6 cuboctahedra, and faces with eighteen equivalent Re(3)Th3U3Re6 cuboctahedra. In the second Re site, Re(2) is bonded to six equivalent U(1) and six equivalent Re(3) atoms to form ReU6Re6 cuboctahedra that share corners with twelve equivalent Re(3)Th3U3Re6 cuboctahedra, edges with six equivalent Re(2)U6Re6 cuboctahedra, faces with two equivalent Re(1)Th6Re6 cuboctahedra, and faces with eighteen equivalent Re(3)Th3U3Re6 cuboctahedra. In the third Re site, Re(3) is bonded to three equivalent U(1), three equivalent Th(1), one Re(1), one Re(2), and four equivalent Re(3) atoms to form ReTh3U3Re6 cuboctahedra that share corners with two equivalent Re(1)Th6Re6 cuboctahedra, corners with two equivalent Re(2)U6Re6 cuboctahedra, corners with fourteen equivalent Re(3)Th3U3Re6 cuboctahedra, edges with six equivalent Re(3)Th3U3Re6 cuboctahedra, faces with three equivalent Re(1)Th6Re6 cuboctahedra, faces with three equivalent Re(2)U6Re6 cuboctahedra, and faces with twelve equivalent Re(3)Th3U3Re6 cuboctahedra.
UThRe4 is Hexagonal Laves-derived structured and crystallizes in the trigonal P-3m1 space group. U(1) is bonded in a 16-coordinate geometry to three equivalent U(1), one Th(1), three equivalent Re(2), and nine equivalent Re(3) atoms. All U(1)-U(1) bond lengths are 3.33 Å. The U(1)-Th(1) bond length is 3.30 Å. All U(1)-Re(2) bond lengths are 3.19 Å. There are three shorter (3.12 Å) and six longer (3.18 Å) U(1)-Re(3) bond lengths. Th(1) is bonded in a 16-coordinate geometry to one U(1), three equivalent Th(1), three equivalent Re(1), and nine equivalent Re(3) atoms. All Th(1)-Th(1) bond lengths are 3.36 Å. All Th(1)-Re(1) bond lengths are 3.20 Å. There are six shorter (3.20 Å) and three longer (3.24 Å) Th(1)-Re(3) bond lengths. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded to six equivalent Th(1) and six equivalent Re(3) atoms to form ReTh6Re6 cuboctahedra that share corners with twelve equivalent Re(3)Th3U3Re6 cuboctahedra, edges with six equivalent Re(1)Th6Re6 cuboctahedra, faces with two equivalent Re(2)U6Re6 cuboctahedra, and faces with eighteen equivalent Re(3)Th3U3Re6 cuboctahedra. All Re(1)-Re(3) bond lengths are 2.77 Å. In the second Re site, Re(2) is bonded to six equivalent U(1) and six equivalent Re(3) atoms to form ReU6Re6 cuboctahedra that share corners with twelve equivalent Re(3)Th3U3Re6 cuboctahedra, edges with six equivalent Re(2)U6Re6 cuboctahedra, faces with two equivalent Re(1)Th6Re6 cuboctahedra, and faces with eighteen equivalent Re(3)Th3U3Re6 cuboctahedra. All Re(2)-Re(3) bond lengths are 2.70 Å. In the third Re site, Re(3) is bonded to three equivalent U(1), three equivalent Th(1), one Re(1), one Re(2), and four equivalent Re(3) atoms to form ReTh3U3Re6 cuboctahedra that share corners with two equivalent Re(1)Th6Re6 cuboctahedra, corners with two equivalent Re(2)U6Re6 cuboctahedra, corners with fourteen equivalent Re(3)Th3U3Re6 cuboctahedra, edges with six equivalent Re(3)Th3U3Re6 cuboctahedra, faces with three equivalent Re(1)Th6Re6 cuboctahedra, faces with three equivalent Re(2)U6Re6 cuboctahedra, and faces with twelve equivalent Re(3)Th3U3Re6 cuboctahedra. There are two shorter (2.66 Å) and two longer (2.79 Å) Re(3)-Re(3) bond lengths.