Cu3NbS4 is Sulvanite structured and crystallizes in the cubic P-43m space group. Nb(1) is bonded to four equivalent S(1) atoms to form NbS4 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 Nb(1)S4 tetrahedra. S(1) is bonded to one Nb(1) and three equivalent Cu(1) atoms to form a mixture of corner and edge-sharing SNbCu3 tetrahedra.
Cu3NbS4 is Sulvanite structured and crystallizes in the cubic P-43m space group. Nb(1) is bonded to four equivalent S(1) atoms to form NbS4 tetrahedra that share edges with six equivalent Cu(1)S4 tetrahedra. All Nb(1)-S(1) bond lengths are 2.32 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 Nb(1)S4 tetrahedra. All Cu(1)-S(1) bond lengths are 2.36 Å. S(1) is bonded to one Nb(1) and three equivalent Cu(1) atoms to form a mixture of corner and edge-sharing SNbCu3 tetrahedra.