Sr2MgGdRuO6 crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. Mg(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted MgO6 octahedra that share corners with two equivalent Gd(1)O6 octahedra, edges with two equivalent Gd(1)O6 octahedra, and faces with two equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 34°. Gd(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted GdO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with six equivalent Ru(1)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-45°. Ru(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form RuO6 octahedra that share corners with six equivalent Gd(1)O6 octahedra and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-45°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Mg(1), one Gd(1), and one Ru(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Mg(1), one Gd(1), and one Ru(1) atom.
Sr2MgGdRuO6 crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. The Sr(1)-O(1) bond length is 2.55 Å. There are two shorter (2.50 Å) and two longer (2.56 Å) Sr(1)-O(2) bond lengths. Mg(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted MgO6 octahedra that share corners with two equivalent Gd(1)O6 octahedra, edges with two equivalent Gd(1)O6 octahedra, and faces with two equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 34°. Both Mg(1)-O(1) bond lengths are 2.32 Å. All Mg(1)-O(2) bond lengths are 2.10 Å. Gd(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted GdO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with six equivalent Ru(1)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-45°. Both Gd(1)-O(1) bond lengths are 2.75 Å. All Gd(1)-O(2) bond lengths are 2.24 Å. Ru(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form RuO6 octahedra that share corners with six equivalent Gd(1)O6 octahedra and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-45°. Both Ru(1)-O(1) bond lengths are 2.16 Å. All Ru(1)-O(2) bond lengths are 2.10 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Mg(1), one Gd(1), and one Ru(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Mg(1), one Gd(1), and one Ru(1) atom.