EuAg(WO4)2 crystallizes in the monoclinic C2/m space group. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded in a distorted octahedral geometry to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms. In the second W site, W(2) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Ag(1) is bonded in a 2-coordinate geometry to one O(4) and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and one W(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Eu(1) and one W(1) atom. In the fourth O site, O(4) is bonded to one W(1), two equivalent W(2), and one Ag(1) atom to form OAgW3 tetrahedra that share corners with two equivalent O(5)Eu2AgW tetrahedra and  an edgeedge with one O(4)AgW3 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent Eu(1), one W(1), and one Ag(1) atom to form distorted OEu2AgW tetrahedra that share corners with two equivalent O(4)AgW3 tetrahedra and  an edgeedge with one O(5)Eu2AgW tetrahedra.
EuAg(WO4)2 crystallizes in the monoclinic C2/m space group. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. Both Eu(1)-O(1) bond lengths are 2.42 Å. Both Eu(1)-O(2) bond lengths are 2.44 Å. Both Eu(1)-O(3) bond lengths are 2.44 Å. Both Eu(1)-O(5) bond lengths are 2.65 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded in a distorted octahedral geometry to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms. The W(1)-O(4) bond length is 2.09 Å. The W(1)-O(5) bond length is 1.88 Å. Both W(1)-O(1) bond lengths are 2.14 Å. Both W(1)-O(3) bond lengths are 1.82 Å. In the second W site, W(2) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Both W(2)-O(1) bond lengths are 1.94 Å. Both W(2)-O(2) bond lengths are 1.81 Å. Both W(2)-O(4) bond lengths are 2.24 Å. Ag(1) is bonded in a 2-coordinate geometry to one O(4) and one O(5) atom. The Ag(1)-O(4) bond length is 2.45 Å. The Ag(1)-O(5) bond length is 2.39 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and one W(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Eu(1) and one W(1) atom. In the fourth O site, O(4) is bonded to one W(1), two equivalent W(2), and one Ag(1) atom to form OAgW3 tetrahedra that share corners with two equivalent O(5)Eu2AgW tetrahedra and  an edgeedge with one O(4)AgW3 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent Eu(1), one W(1), and one Ag(1) atom to form distorted OEu2AgW tetrahedra that share corners with two equivalent O(4)AgW3 tetrahedra and  an edgeedge with one O(5)Eu2AgW tetrahedra.