LiTm(WO4)2 crystallizes in the monoclinic P2/c space group. Li(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted LiO6 octahedra that share corners with eight equivalent W(1)O6 octahedra and edges with two equivalent Tm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-58°. Tm(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted TmO6 octahedra that share corners with eight equivalent W(1)O6 octahedra and edges with two equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. W(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted WO6 octahedra that share corners with four equivalent Li(1)O6 octahedra, corners with four equivalent Tm(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-60°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Tm(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Tm(1), and one W(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1) and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Tm(1), and one W(1) atom.
LiTm(WO4)2 crystallizes in the monoclinic P2/c space group. Li(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted LiO6 octahedra that share corners with eight equivalent W(1)O6 octahedra and edges with two equivalent Tm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-58°. Both Li(1)-O(2) bond lengths are 2.47 Å. Both Li(1)-O(3) bond lengths are 2.17 Å. Both Li(1)-O(4) bond lengths are 2.13 Å. Tm(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted TmO6 octahedra that share corners with eight equivalent W(1)O6 octahedra and edges with two equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. Both Tm(1)-O(1) bond lengths are 2.22 Å. Both Tm(1)-O(2) bond lengths are 2.21 Å. Both Tm(1)-O(4) bond lengths are 2.30 Å. W(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted WO6 octahedra that share corners with four equivalent Li(1)O6 octahedra, corners with four equivalent Tm(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-60°. The W(1)-O(2) bond length is 1.83 Å. The W(1)-O(4) bond length is 1.83 Å. There is one shorter (2.01 Å) and one longer (2.10 Å) W(1)-O(1) bond length. There is one shorter (1.91 Å) and one longer (2.20 Å) W(1)-O(3) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Tm(1) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Tm(1), and one W(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1) and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Tm(1), and one W(1) atom.