MgSn2(PO5)2 crystallizes in the orthorhombic Fdd2 space group. Mg(1) is bonded in a distorted square co-planar geometry to two equivalent O(3) and two equivalent O(5) atoms. Sn(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form SnO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. P(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-62°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Sn(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one P(1) atom.
MgSn2(PO5)2 crystallizes in the orthorhombic Fdd2 space group. Mg(1) is bonded in a distorted square co-planar geometry to two equivalent O(3) and two equivalent O(5) atoms. Both Mg(1)-O(3) bond lengths are 2.27 Å. Both Mg(1)-O(5) bond lengths are 2.37 Å. Sn(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form SnO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. The Sn(1)-O(1) bond length is 2.11 Å. The Sn(1)-O(3) bond length is 2.30 Å. The Sn(1)-O(4) bond length is 2.12 Å. The Sn(1)-O(5) bond length is 2.24 Å. Both Sn(1)-O(2) bond lengths are 1.92 Å. P(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-62°. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.57 Å. The P(1)-O(4) bond length is 1.54 Å. The P(1)-O(5) bond length is 1.57 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Sn(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one P(1) atom.