Mg2IrSnO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), and two equivalent O(1) atoms. Ir(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form IrO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-48°. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with six equivalent Ir(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-48°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one Ir(1), and one Sn(1) atom to form distorted corner-sharing OMg2SnIr trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one Ir(1), and one Sn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Ir(1), and one Sn(1) atom.
Mg2IrSnO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), and two equivalent O(1) atoms. The Mg(1)-O(2) bond length is 2.05 Å. The Mg(1)-O(3) bond length is 2.05 Å. There is one shorter (2.07 Å) and one longer (2.11 Å) Mg(1)-O(1) bond length. Ir(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form IrO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-48°. Both Ir(1)-O(1) bond lengths are 2.07 Å. Both Ir(1)-O(2) bond lengths are 2.02 Å. Both Ir(1)-O(3) bond lengths are 2.02 Å. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with six equivalent Ir(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-48°. Both Sn(1)-O(1) bond lengths are 2.15 Å. Both Sn(1)-O(2) bond lengths are 2.08 Å. Both Sn(1)-O(3) bond lengths are 2.08 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one Ir(1), and one Sn(1) atom to form distorted corner-sharing OMg2SnIr trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one Ir(1), and one Sn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Ir(1), and one Sn(1) atom.