MgSb3O7F crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(3), and two equivalent F(1) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 26°. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(3), and one F(1) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Sb(1) and two equivalent Sb(2) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent Sb(2) atoms. In the fourth O site, O(4) is bonded in a water-like geometry to one Sb(1) and one Sb(2) atom. F(1) is bonded in a distorted see-saw-like geometry to two equivalent Mg(1) and two equivalent Sb(2) atoms.
MgSb3O7F crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(3), and two equivalent F(1) atoms. The Mg(1)-O(2) bond length is 2.17 Å. Both Mg(1)-O(3) bond lengths are 2.14 Å. Both Mg(1)-F(1) bond lengths are 2.16 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 26°. Both Sb(1)-O(1) bond lengths are 2.01 Å. Both Sb(1)-O(2) bond lengths are 2.03 Å. Both Sb(1)-O(4) bond lengths are 2.05 Å. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(3), and one F(1) atom. The Sb(2)-O(4) bond length is 2.02 Å. There is one shorter (2.18 Å) and one longer (2.26 Å) Sb(2)-O(1) bond length. Both Sb(2)-O(3) bond lengths are 2.06 Å. The Sb(2)-F(1) bond length is 2.42 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Sb(1) and two equivalent Sb(2) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent Sb(2) atoms. In the fourth O site, O(4) is bonded in a water-like geometry to one Sb(1) and one Sb(2) atom. F(1) is bonded in a distorted see-saw-like geometry to two equivalent Mg(1) and two equivalent Sb(2) atoms.