CuZn(SeO3)2 crystallizes in the monoclinic P2_1/c space group. Cu(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CuO6 octahedra that share corners with six equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-57°. Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form ZnO6 octahedra that share corners with six equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-57°. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Zn(1), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one Zn(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(1), one Zn(1), and one Se(1) atom.
CuZn(SeO3)2 crystallizes in the monoclinic P2_1/c space group. Cu(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CuO6 octahedra that share corners with six equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-57°. Both Cu(1)-O(1) bond lengths are 2.11 Å. Both Cu(1)-O(2) bond lengths are 2.44 Å. Both Cu(1)-O(3) bond lengths are 1.99 Å. Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form ZnO6 octahedra that share corners with six equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-57°. Both Zn(1)-O(1) bond lengths are 2.22 Å. Both Zn(1)-O(2) bond lengths are 1.99 Å. Both Zn(1)-O(3) bond lengths are 2.41 Å. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. The Se(1)-O(1) bond length is 1.76 Å. The Se(1)-O(2) bond length is 1.74 Å. The Se(1)-O(3) bond length is 1.76 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Zn(1), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one Zn(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(1), one Zn(1), and one Se(1) atom.