UVC2 crystallizes in the orthorhombic Pnma space group. U(1) is bonded to three equivalent C(1) and four equivalent C(2) atoms to form distorted UC7 pentagonal bipyramids that share corners with four equivalent U(1)C7 pentagonal bipyramids, corners with three equivalent V(1)C5 trigonal bipyramids, edges with four equivalent U(1)C7 pentagonal bipyramids, edges with seven equivalent V(1)C5 trigonal bipyramids, and faces with two equivalent U(1)C7 pentagonal bipyramids. V(1) is bonded to two equivalent C(2) and three equivalent C(1) atoms to form VC5 trigonal bipyramids that share corners with three equivalent U(1)C7 pentagonal bipyramids, corners with four equivalent V(1)C5 trigonal bipyramids, edges with seven equivalent U(1)C7 pentagonal bipyramids, and edges with two equivalent V(1)C5 trigonal bipyramids. There are two inequivalent C sites. In the first C site, C(1) is bonded to three equivalent U(1) and three equivalent V(1) atoms to form CU3V3 octahedra that share corners with nine equivalent C(2)U4V2 octahedra, edges with three equivalent C(2)U4V2 octahedra, edges with six equivalent C(1)U3V3 octahedra, and  a faceface with one C(2)U4V2 octahedra. The corner-sharing octahedral tilt angles range from 14-60°. In the second C site, C(2) is bonded to four equivalent U(1) and two equivalent V(1) atoms to form CU4V2 octahedra that share corners with four equivalent C(2)U4V2 octahedra, corners with nine equivalent C(1)U3V3 octahedra, edges with two equivalent C(2)U4V2 octahedra, edges with three equivalent C(1)U3V3 octahedra,  a faceface with one C(1)U3V3 octahedra, and faces with two equivalent C(2)U4V2 octahedra. The corner-sharing octahedral tilt angles range from 14-60°.
UVC2 crystallizes in the orthorhombic Pnma space group. U(1) is bonded to three equivalent C(1) and four equivalent C(2) atoms to form distorted UC7 pentagonal bipyramids that share corners with four equivalent U(1)C7 pentagonal bipyramids, corners with three equivalent V(1)C5 trigonal bipyramids, edges with four equivalent U(1)C7 pentagonal bipyramids, edges with seven equivalent V(1)C5 trigonal bipyramids, and faces with two equivalent U(1)C7 pentagonal bipyramids. There is one shorter (2.38 Å) and two longer (2.50 Å) U(1)-C(1) bond lengths. There are two shorter (2.37 Å) and two longer (2.45 Å) U(1)-C(2) bond lengths. V(1) is bonded to two equivalent C(2) and three equivalent C(1) atoms to form VC5 trigonal bipyramids that share corners with three equivalent U(1)C7 pentagonal bipyramids, corners with four equivalent V(1)C5 trigonal bipyramids, edges with seven equivalent U(1)C7 pentagonal bipyramids, and edges with two equivalent V(1)C5 trigonal bipyramids. There is one shorter (2.10 Å) and one longer (2.15 Å) V(1)-C(2) bond length. There are two shorter (2.06 Å) and one longer (2.10 Å) V(1)-C(1) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded to three equivalent U(1) and three equivalent V(1) atoms to form CU3V3 octahedra that share corners with nine equivalent C(2)U4V2 octahedra, edges with three equivalent C(2)U4V2 octahedra, edges with six equivalent C(1)U3V3 octahedra, and  a faceface with one C(2)U4V2 octahedra. The corner-sharing octahedral tilt angles range from 14-60°. In the second C site, C(2) is bonded to four equivalent U(1) and two equivalent V(1) atoms to form CU4V2 octahedra that share corners with four equivalent C(2)U4V2 octahedra, corners with nine equivalent C(1)U3V3 octahedra, edges with two equivalent C(2)U4V2 octahedra, edges with three equivalent C(1)U3V3 octahedra,  a faceface with one C(1)U3V3 octahedra, and faces with two equivalent C(2)U4V2 octahedra. The corner-sharing octahedral tilt angles range from 14-60°.