AgCu2(SeO5)2 crystallizes in the monoclinic C2/m space group. Ag(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Cu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted CuO6 octahedra that share corners with four equivalent Se(1)O4 tetrahedra and edges with two equivalent Cu(1)O6 octahedra. Se(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SeO4 tetrahedra that share corners with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ag(1), two equivalent Cu(1), and one Se(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Ag(1) and one Se(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ag(1), one Cu(1), and one Se(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent Cu(1) atoms.
AgCu2(SeO5)2 crystallizes in the monoclinic C2/m space group. Ag(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Both Ag(1)-O(1) bond lengths are 2.84 Å. Both Ag(1)-O(2) bond lengths are 2.75 Å. All Ag(1)-O(3) bond lengths are 2.58 Å. Cu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted CuO6 octahedra that share corners with four equivalent Se(1)O4 tetrahedra and edges with two equivalent Cu(1)O6 octahedra. Both Cu(1)-O(1) bond lengths are 2.39 Å. Both Cu(1)-O(3) bond lengths are 1.94 Å. Both Cu(1)-O(4) bond lengths are 1.81 Å. Se(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SeO4 tetrahedra that share corners with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. The Se(1)-O(1) bond length is 1.67 Å. The Se(1)-O(2) bond length is 1.64 Å. Both Se(1)-O(3) bond lengths are 1.74 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ag(1), two equivalent Cu(1), and one Se(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Ag(1) and one Se(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ag(1), one Cu(1), and one Se(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent Cu(1) atoms.