MgSn(GeO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Mg(1) is bonded in a see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. Sn(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing GeO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Sn(1), and one Ge(1) atom.
MgSn(GeO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Mg(1) is bonded in a see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Mg(1)-O(2) bond lengths are 1.97 Å. Both Mg(1)-O(3) bond lengths are 2.00 Å. Sn(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Sn(1)-O(2) bond lengths are 2.19 Å. Both Sn(1)-O(3) bond lengths are 2.36 Å. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing GeO4 tetrahedra. The Ge(1)-O(2) bond length is 1.76 Å. The Ge(1)-O(3) bond length is 1.74 Å. There is one shorter (1.80 Å) and one longer (1.81 Å) Ge(1)-O(1) bond length. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Sn(1), and one Ge(1) atom.