Cu2(SO4)3 crystallizes in the monoclinic C2/c space group. Cu(1) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted CuO5 trigonal bipyramids that share corners with two equivalent S(2)O4 tetrahedra and corners with three equivalent S(1)O4 tetrahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form SO4 tetrahedra that share corners with three equivalent Cu(1)O5 trigonal bipyramids. In the second S site, S(2) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form SO4 tetrahedra that share corners with four equivalent Cu(1)O5 trigonal bipyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Cu(1) and one S(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Cu(1) and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one S(1) atom.
Cu2(SO4)3 crystallizes in the monoclinic C2/c space group. Cu(1) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted CuO5 trigonal bipyramids that share corners with two equivalent S(2)O4 tetrahedra and corners with three equivalent S(1)O4 tetrahedra. The Cu(1)-O(1) bond length is 1.90 Å. The Cu(1)-O(3) bond length is 1.91 Å. The Cu(1)-O(4) bond length is 1.95 Å. The Cu(1)-O(5) bond length is 2.30 Å. The Cu(1)-O(6) bond length is 1.89 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form SO4 tetrahedra that share corners with three equivalent Cu(1)O5 trigonal bipyramids. The S(1)-O(2) bond length is 1.43 Å. The S(1)-O(3) bond length is 1.51 Å. The S(1)-O(4) bond length is 1.51 Å. The S(1)-O(6) bond length is 1.52 Å. In the second S site, S(2) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form SO4 tetrahedra that share corners with four equivalent Cu(1)O5 trigonal bipyramids. Both S(2)-O(1) bond lengths are 1.52 Å. Both S(2)-O(5) bond lengths are 1.46 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Cu(1) and one S(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Cu(1) and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one S(1) atom.