Mg2MoSbO6 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), and two equivalent O(1) atoms. In the second Mg site, Mg(2) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), and two equivalent O(2) atoms. Mo(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MoO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-49°. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mo(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(2), one Mo(1), and one Sb(1) atom. In the third O site, O(3) is bonded to one Mg(1), one Mg(2), and two equivalent Sb(1) atoms to form distorted OMg2Sb2 trigonal pyramids that share corners with two equivalent O(4)Mg2Mo2 trigonal pyramids and corners with two equivalent O(3)Mg2Sb2 trigonal pyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Mg(2), and two equivalent Mo(1) atoms to form distorted OMg2Mo2 trigonal pyramids that share corners with two equivalent O(4)Mg2Mo2 trigonal pyramids and corners with two equivalent O(3)Mg2Sb2 trigonal pyramids.
Mg2MoSbO6 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), and two equivalent O(1) atoms. The Mg(1)-O(3) bond length is 2.12 Å. The Mg(1)-O(4) bond length is 2.05 Å. Both Mg(1)-O(1) bond lengths are 2.07 Å. In the second Mg site, Mg(2) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), and two equivalent O(2) atoms. The Mg(2)-O(3) bond length is 2.22 Å. The Mg(2)-O(4) bond length is 2.01 Å. Both Mg(2)-O(2) bond lengths are 2.05 Å. Mo(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MoO6 octahedra that share corners with two equivalent Mo(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-49°. Both Mo(1)-O(1) bond lengths are 2.17 Å. Both Mo(1)-O(2) bond lengths are 2.16 Å. Both Mo(1)-O(4) bond lengths are 2.14 Å. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. Both Sb(1)-O(1) bond lengths are 1.99 Å. Both Sb(1)-O(2) bond lengths are 1.98 Å. Both Sb(1)-O(3) bond lengths are 2.14 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mo(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(2), one Mo(1), and one Sb(1) atom. In the third O site, O(3) is bonded to one Mg(1), one Mg(2), and two equivalent Sb(1) atoms to form distorted OMg2Sb2 trigonal pyramids that share corners with two equivalent O(4)Mg2Mo2 trigonal pyramids and corners with two equivalent O(3)Mg2Sb2 trigonal pyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Mg(2), and two equivalent Mo(1) atoms to form distorted OMg2Mo2 trigonal pyramids that share corners with two equivalent O(4)Mg2Mo2 trigonal pyramids and corners with two equivalent O(3)Mg2Sb2 trigonal pyramids.