AgTb(WO4)2 crystallizes in the monoclinic C2/m space group. Tb(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 to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form distorted edge-sharing WO6 octahedra. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted edge-sharing WO6 octahedra. Ag(1) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(2), and two equivalent O(3) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Tb(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 Tb(1), one W(2), and one Ag(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Tb(1), one W(1), and one Ag(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)Tb2AgW tetrahedra and  an edgeedge with one O(4)AgW3 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent Tb(1), one W(1), and one Ag(1) atom to form distorted OTb2AgW tetrahedra that share corners with two equivalent O(4)AgW3 tetrahedra and  an edgeedge with one O(5)Tb2AgW tetrahedra.
AgTb(WO4)2 crystallizes in the monoclinic C2/m space group. Tb(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 Tb(1)-O(1) bond lengths are 2.34 Å. Both Tb(1)-O(2) bond lengths are 2.36 Å. Both Tb(1)-O(3) bond lengths are 2.35 Å. Both Tb(1)-O(5) bond lengths are 2.57 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form distorted edge-sharing WO6 octahedra. The W(1)-O(4) bond length is 2.06 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 1.83 Å. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted edge-sharing WO6 octahedra. 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 2.21 Å. Ag(1) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(2), and two equivalent O(3) atoms. The Ag(1)-O(4) bond length is 2.49 Å. The Ag(1)-O(5) bond length is 2.36 Å. Both Ag(1)-O(2) bond lengths are 2.79 Å. Both Ag(1)-O(3) bond lengths are 2.74 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 Tb(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 Tb(1), one W(2), and one Ag(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Tb(1), one W(1), and one Ag(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)Tb2AgW tetrahedra and  an edgeedge with one O(4)AgW3 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent Tb(1), one W(1), and one Ag(1) atom to form distorted OTb2AgW tetrahedra that share corners with two equivalent O(4)AgW3 tetrahedra and  an edgeedge with one O(5)Tb2AgW tetrahedra.