DyCu(WO4)2 crystallizes in the triclinic P-1 space group. Dy(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form DyO6 octahedra that share corners with eight equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-56°. W(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms 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 34-56°. Cu(1) is bonded in a linear geometry to two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one W(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one W(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent W(1) and one Cu(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Dy(1) and two equivalent W(1) atoms.
DyCu(WO4)2 crystallizes in the triclinic P-1 space group. Dy(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form DyO6 octahedra that share corners with eight equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-56°. Both Dy(1)-O(1) bond lengths are 2.26 Å. Both Dy(1)-O(2) bond lengths are 2.29 Å. Both Dy(1)-O(4) bond lengths are 2.33 Å. W(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms 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 34-56°. The W(1)-O(1) bond length is 1.82 Å. The W(1)-O(2) bond length is 1.82 Å. There is one shorter (1.93 Å) and one longer (2.20 Å) W(1)-O(3) bond length. There is one shorter (2.01 Å) and one longer (2.14 Å) W(1)-O(4) bond length. Cu(1) is bonded in a linear geometry to two equivalent O(3) atoms. Both Cu(1)-O(3) bond lengths are 1.85 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one W(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one W(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent W(1) and one Cu(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Dy(1) and two equivalent W(1) atoms.