DyCu(WO4)2 crystallizes in the triclinic P1 space group. Dy(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form DyO6 octahedra that share corners with four equivalent W(1)O6 octahedra and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-56°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with four equivalent Dy(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-54°. In the second W site, W(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with four equivalent Dy(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-56°. Cu(1) is bonded in a distorted linear geometry to one O(2), one O(5), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Dy(1) and one W(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Dy(1), one W(1), and one Cu(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Dy(1) and one W(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Dy(1) and one W(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cu(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Dy(1), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Dy(1), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cu(1) atom.
DyCu(WO4)2 crystallizes in the triclinic P1 space group. Dy(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form DyO6 octahedra that share corners with four equivalent W(1)O6 octahedra and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-56°. The Dy(1)-O(1) bond length is 2.30 Å. The Dy(1)-O(2) bond length is 2.30 Å. The Dy(1)-O(3) bond length is 2.27 Å. The Dy(1)-O(4) bond length is 2.28 Å. The Dy(1)-O(6) bond length is 2.32 Å. The Dy(1)-O(7) bond length is 2.32 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with four equivalent Dy(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-54°. The W(1)-O(2) bond length is 1.82 Å. The W(1)-O(4) bond length is 1.82 Å. The W(1)-O(5) bond length is 1.93 Å. The W(1)-O(6) bond length is 2.16 Å. The W(1)-O(7) bond length is 2.00 Å. The W(1)-O(8) bond length is 2.18 Å. In the second W site, W(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with four equivalent Dy(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-56°. The W(2)-O(1) bond length is 1.82 Å. The W(2)-O(3) bond length is 1.82 Å. The W(2)-O(5) bond length is 2.20 Å. The W(2)-O(6) bond length is 1.99 Å. The W(2)-O(7) bond length is 2.14 Å. The W(2)-O(8) bond length is 1.94 Å. Cu(1) is bonded in a distorted linear geometry to one O(2), one O(5), and one O(8) atom. The Cu(1)-O(2) bond length is 2.57 Å. The Cu(1)-O(5) bond length is 1.85 Å. The Cu(1)-O(8) bond length is 1.85 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Dy(1) and one W(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Dy(1), one W(1), and one Cu(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Dy(1) and one W(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Dy(1) and one W(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cu(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Dy(1), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Dy(1), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cu(1) atom.