Cu3TaS4 is Sulvanite structured and crystallizes in the cubic P-43m space group. Ta(1) is bonded to four equivalent S(1) atoms to form TaS4 tetrahedra that share edges with six equivalent Cu(1)S4 tetrahedra. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 tetrahedra that share corners with eight equivalent Cu(1)S4 tetrahedra and edges with two equivalent Ta(1)S4 tetrahedra. S(1) is bonded to one Ta(1) and three equivalent Cu(1) atoms to form a mixture of corner and edge-sharing STaCu3 tetrahedra.
Cu3TaS4 is Sulvanite structured and crystallizes in the cubic P-43m space group. Ta(1) is bonded to four equivalent S(1) atoms to form TaS4 tetrahedra that share edges with six equivalent Cu(1)S4 tetrahedra. All Ta(1)-S(1) bond lengths are 2.31 Å. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 tetrahedra that share corners with eight equivalent Cu(1)S4 tetrahedra and edges with two equivalent Ta(1)S4 tetrahedra. All Cu(1)-S(1) bond lengths are 2.35 Å. S(1) is bonded to one Ta(1) and three equivalent Cu(1) atoms to form a mixture of corner and edge-sharing STaCu3 tetrahedra.