Cu2WO4 crystallizes in the triclinic P-1 space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(6), and two equivalent O(5) atoms. In the second W site, W(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a bent 120 degrees geometry to one O(2) and one O(8) atom. In the second Cu site, Cu(2) is bonded in a distorted single-bond geometry to one O(1) atom. In the third Cu site, Cu(3) is bonded in a linear geometry to one O(2) and one O(4) atom. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to one O(3), one O(6), and two equivalent O(7) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one W(1), two equivalent W(2), and one Cu(2) atom to form distorted edge-sharing OCuW3 tetrahedra. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Cu(1), one Cu(3), and one O(8) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one W(1) and one Cu(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(3) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one W(2) and two equivalent W(1) atoms. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Cu(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one W(2) and two equivalent Cu(4) atoms. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one O(2) atom.
Cu2WO4 crystallizes in the triclinic P-1 space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(6), and two equivalent O(5) atoms. The W(1)-O(1) bond length is 2.19 Å. The W(1)-O(3) bond length is 1.78 Å. The W(1)-O(6) bond length is 1.91 Å. There is one shorter (2.09 Å) and one longer (2.25 Å) W(1)-O(5) bond length. In the second W site, W(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. The W(2)-O(4) bond length is 1.81 Å. The W(2)-O(5) bond length is 2.00 Å. The W(2)-O(6) bond length is 2.18 Å. The W(2)-O(7) bond length is 1.81 Å. There is one shorter (2.05 Å) and one longer (2.14 Å) W(2)-O(1) bond length. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a bent 120 degrees geometry to one O(2) and one O(8) atom. The Cu(1)-O(2) bond length is 1.97 Å. The Cu(1)-O(8) bond length is 1.85 Å. In the second Cu site, Cu(2) is bonded in a distorted single-bond geometry to one O(1) atom. The Cu(2)-O(1) bond length is 2.32 Å. In the third Cu site, Cu(3) is bonded in a linear geometry to one O(2) and one O(4) atom. The Cu(3)-O(2) bond length is 1.91 Å. The Cu(3)-O(4) bond length is 1.91 Å. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to one O(3), one O(6), and two equivalent O(7) atoms. The Cu(4)-O(3) bond length is 1.98 Å. The Cu(4)-O(6) bond length is 1.94 Å. There is one shorter (2.01 Å) and one longer (2.49 Å) Cu(4)-O(7) bond length. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one W(1), two equivalent W(2), and one Cu(2) atom to form distorted edge-sharing OCuW3 tetrahedra. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Cu(1), one Cu(3), and one O(8) atom. The O(2)-O(8) bond length is 1.43 Å. In the third O site, O(3) is bonded in an L-shaped geometry to one W(1) and one Cu(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(3) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one W(2) and two equivalent W(1) atoms. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Cu(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one W(2) and two equivalent Cu(4) atoms. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one O(2) atom.