K2VCuSe4 crystallizes in the orthorhombic Fddd space group. K(1) is bonded in a 8-coordinate geometry to eight equivalent Se(1) atoms. V(1) is bonded to four equivalent Se(1) atoms to form VSe4 tetrahedra that share edges with two equivalent Cu(1)Se4 tetrahedra. Cu(1) is bonded to four equivalent Se(1) atoms to form distorted CuSe4 tetrahedra that share edges with two equivalent V(1)Se4 tetrahedra. Se(1) is bonded in a 6-coordinate geometry to four equivalent K(1), one V(1), and one Cu(1) atom.
K2VCuSe4 crystallizes in the orthorhombic Fddd space group. K(1) is bonded in a 8-coordinate geometry to eight equivalent Se(1) atoms. There are a spread of K(1)-Se(1) bond distances ranging from 3.42-3.64 Å. V(1) is bonded to four equivalent Se(1) atoms to form VSe4 tetrahedra that share edges with two equivalent Cu(1)Se4 tetrahedra. All V(1)-Se(1) bond lengths are 2.32 Å. Cu(1) is bonded to four equivalent Se(1) atoms to form distorted CuSe4 tetrahedra that share edges with two equivalent V(1)Se4 tetrahedra. All Cu(1)-Se(1) bond lengths are 2.43 Å. Se(1) is bonded in a 6-coordinate geometry to four equivalent K(1), one V(1), and one Cu(1) atom.