UCrCuSi2 crystallizes in the tetragonal I-4m2 space group. U(1) is bonded in a 16-coordinate geometry to four equivalent Cr(1), four equivalent Cu(1), and eight equivalent Si(1) atoms. Cr(1) is bonded to four equivalent U(1), four equivalent Cu(1), and four equivalent Si(1) atoms to form distorted CrU4Cu4Si4 tetrahedra that share corners with four equivalent Cu(1)U4Cr4Si4 cuboctahedra, corners with twelve equivalent Cr(1)U4Cu4Si4 tetrahedra, edges with two equivalent Cu(1)U4Cr4Si4 cuboctahedra, faces with four equivalent Cu(1)U4Cr4Si4 cuboctahedra, and faces with four equivalent Cr(1)U4Cu4Si4 tetrahedra. Cu(1) is bonded to four equivalent U(1), four equivalent Cr(1), and four equivalent Si(1) atoms to form CuU4Cr4Si4 cuboctahedra that share corners with twelve equivalent Cu(1)U4Cr4Si4 cuboctahedra, corners with four equivalent Cr(1)U4Cu4Si4 tetrahedra, edges with two equivalent Cr(1)U4Cu4Si4 tetrahedra, faces with four equivalent Cu(1)U4Cr4Si4 cuboctahedra, and faces with four equivalent Cr(1)U4Cu4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent U(1), two equivalent Cr(1), two equivalent Cu(1), and one Si(1) atom.
UCrCuSi2 crystallizes in the tetragonal I-4m2 space group. U(1) is bonded in a 16-coordinate geometry to four equivalent Cr(1), four equivalent Cu(1), and eight equivalent Si(1) atoms. All U(1)-Cr(1) bond lengths are 3.25 Å. All U(1)-Cu(1) bond lengths are 3.25 Å. All U(1)-Si(1) bond lengths are 3.03 Å. Cr(1) is bonded to four equivalent U(1), four equivalent Cu(1), and four equivalent Si(1) atoms to form distorted CrU4Cu4Si4 tetrahedra that share corners with four equivalent Cu(1)U4Cr4Si4 cuboctahedra, corners with twelve equivalent Cr(1)U4Cu4Si4 tetrahedra, edges with two equivalent Cu(1)U4Cr4Si4 cuboctahedra, faces with four equivalent Cu(1)U4Cr4Si4 cuboctahedra, and faces with four equivalent Cr(1)U4Cu4Si4 tetrahedra. All Cr(1)-Cu(1) bond lengths are 2.79 Å. All Cr(1)-Si(1) bond lengths are 2.42 Å. Cu(1) is bonded to four equivalent U(1), four equivalent Cr(1), and four equivalent Si(1) atoms to form CuU4Cr4Si4 cuboctahedra that share corners with twelve equivalent Cu(1)U4Cr4Si4 cuboctahedra, corners with four equivalent Cr(1)U4Cu4Si4 tetrahedra, edges with two equivalent Cr(1)U4Cu4Si4 tetrahedra, faces with four equivalent Cu(1)U4Cr4Si4 cuboctahedra, and faces with four equivalent Cr(1)U4Cu4Si4 tetrahedra. All Cu(1)-Si(1) bond lengths are 2.42 Å. Si(1) is bonded in a 9-coordinate geometry to four equivalent U(1), two equivalent Cr(1), two equivalent Cu(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.38 Å.