Ba2MgTmRuO6 crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one Mg(1), one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. Mg(1) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one O(3), and two equivalent O(1) atoms. Tm(1) is bonded in an octahedral geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. Ru(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(1), two equivalent Ba(2), one Mg(1), one Tm(1), and one Ru(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(2), two equivalent Ba(1), one Tm(1), and one Ru(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ba(1), two equivalent Ba(2), one Mg(1), one Tm(1), and one Ru(1) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Ba(2), two equivalent Ba(1), one Tm(1), and one Ru(1) atom.
Ba2MgTmRuO6 crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one Mg(1), one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. The Ba(1)-Mg(1) bond length is 2.85 Å. The Ba(1)-O(3) bond length is 2.54 Å. Both Ba(1)-O(1) bond lengths are 2.53 Å. Both Ba(1)-O(2) bond lengths are 3.12 Å. There are two shorter (3.10 Å) and two longer (3.13 Å) Ba(1)-O(4) bond lengths. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. The Ba(2)-O(2) bond length is 2.97 Å. Both Ba(2)-O(3) bond lengths are 2.98 Å. Both Ba(2)-O(4) bond lengths are 3.00 Å. There are two shorter (2.97 Å) and two longer (2.98 Å) Ba(2)-O(1) bond lengths. Mg(1) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one O(3), and two equivalent O(1) atoms. The Mg(1)-O(3) bond length is 1.90 Å. Both Mg(1)-O(1) bond lengths are 1.90 Å. Tm(1) is bonded in an octahedral geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. The Tm(1)-O(2) bond length is 2.14 Å. The Tm(1)-O(3) bond length is 2.38 Å. Both Tm(1)-O(1) bond lengths are 2.38 Å. Both Tm(1)-O(4) bond lengths are 2.14 Å. Ru(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. The Ru(1)-O(2) bond length is 2.00 Å. The Ru(1)-O(3) bond length is 2.34 Å. Both Ru(1)-O(1) bond lengths are 2.34 Å. Both Ru(1)-O(4) bond lengths are 2.00 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(1), two equivalent Ba(2), one Mg(1), one Tm(1), and one Ru(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(2), two equivalent Ba(1), one Tm(1), and one Ru(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ba(1), two equivalent Ba(2), one Mg(1), one Tm(1), and one Ru(1) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Ba(2), two equivalent Ba(1), one Tm(1), and one Ru(1) atom.