Ca2TmRuO6 crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. Tm(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form TmO6 octahedra that share corners with six equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-35°. Ru(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form RuO6 octahedra that share corners with six equivalent Tm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-35°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Tm(1), and one Ru(1) atom to form distorted corner-sharing OCa2TmRu tetrahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one Tm(1), and one Ru(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one Tm(1), and one Ru(1) atom.
Ca2TmRuO6 crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. There is one shorter (2.35 Å) and one longer (2.42 Å) Ca(1)-O(1) bond length. There are a spread of Ca(1)-O(2) bond distances ranging from 2.40-2.90 Å. There are a spread of Ca(1)-O(3) bond distances ranging from 2.37-2.80 Å. Tm(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form TmO6 octahedra that share corners with six equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-35°. Both Tm(1)-O(1) bond lengths are 2.21 Å. Both Tm(1)-O(2) bond lengths are 2.21 Å. Both Tm(1)-O(3) bond lengths are 2.19 Å. Ru(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form RuO6 octahedra that share corners with six equivalent Tm(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-35°. Both Ru(1)-O(1) bond lengths are 1.99 Å. Both Ru(1)-O(2) bond lengths are 1.99 Å. Both Ru(1)-O(3) bond lengths are 1.98 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Tm(1), and one Ru(1) atom to form distorted corner-sharing OCa2TmRu tetrahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one Tm(1), and one Ru(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one Tm(1), and one Ru(1) atom.