CuZn2(AsO4)2 crystallizes in the triclinic P-1 space group. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. Zn(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(3) atoms to form ZnO5 trigonal bipyramids that share corners with five equivalent As(1)O4 tetrahedra and  an edgeedge with one Zn(1)O5 trigonal bipyramid. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with five equivalent Zn(1)O5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Cu(1), one Zn(1), and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Zn(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Cu(1), one Zn(1), and one As(1) atom.
CuZn2(AsO4)2 crystallizes in the triclinic P-1 space group. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. Both Cu(1)-O(1) bond lengths are 1.92 Å. Both Cu(1)-O(4) bond lengths are 2.03 Å. Zn(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(3) atoms to form ZnO5 trigonal bipyramids that share corners with five equivalent As(1)O4 tetrahedra and  an edgeedge with one Zn(1)O5 trigonal bipyramid. The Zn(1)-O(1) bond length is 2.19 Å. The Zn(1)-O(2) bond length is 1.98 Å. The Zn(1)-O(4) bond length is 2.08 Å. There is one shorter (2.03 Å) and one longer (2.11 Å) Zn(1)-O(3) bond length. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with five equivalent Zn(1)O5 trigonal bipyramids. The As(1)-O(1) bond length is 1.75 Å. The As(1)-O(2) bond length is 1.70 Å. The As(1)-O(3) bond length is 1.73 Å. The As(1)-O(4) bond length is 1.75 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Cu(1), one Zn(1), and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Zn(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Cu(1), one Zn(1), and one As(1) atom.