MgV(SbO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(11), one O(12), one O(3), one O(4), and one O(7) atom to form distorted MgO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent V(1)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. V(1) is bonded to one O(1), one O(11), one O(4), one O(7), one O(8), and one O(9) atom to form distorted VO6 octahedra that share corners with two equivalent Sb(4)O6 octahedra, corners with four equivalent Mg(1)O6 octahedra, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(5), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with four equivalent Sb(4)O6 octahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-61°. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(4), one O(6), and one O(9) atom. In the third Sb site, Sb(3) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(2), one O(4), and one O(9) atom. In the fourth Sb site, Sb(4) is bonded to one O(10), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, and  an edgeedge with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), one Sb(2), and one Sb(3) atom to form distorted edge-sharing OMgVSb2 trigonal pyramids. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sb(1) and one Sb(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sb(1), and one Sb(4) atom. In the fourth O site, O(4) is bonded to one Mg(1), one V(1), one Sb(2), and one Sb(3) atom to form distorted edge-sharing OMgVSb2 trigonal pyramids. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(4) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Sb(2) and one Sb(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Sb(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one V(1), one Sb(1), and one Sb(4) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one Sb(2), and one Sb(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Sb(1) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Mg(1), one Sb(2), and one Sb(3) atom.
MgV(SbO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(11), one O(12), one O(3), one O(4), and one O(7) atom to form distorted MgO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent V(1)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. The Mg(1)-O(1) bond length is 2.17 Å. The Mg(1)-O(11) bond length is 2.04 Å. The Mg(1)-O(12) bond length is 2.15 Å. The Mg(1)-O(3) bond length is 2.03 Å. The Mg(1)-O(4) bond length is 2.29 Å. The Mg(1)-O(7) bond length is 2.15 Å. V(1) is bonded to one O(1), one O(11), one O(4), one O(7), one O(8), and one O(9) atom to form distorted VO6 octahedra that share corners with two equivalent Sb(4)O6 octahedra, corners with four equivalent Mg(1)O6 octahedra, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. The V(1)-O(1) bond length is 2.16 Å. The V(1)-O(11) bond length is 2.05 Å. The V(1)-O(4) bond length is 2.17 Å. The V(1)-O(7) bond length is 1.98 Å. The V(1)-O(8) bond length is 1.96 Å. The V(1)-O(9) bond length is 2.13 Å. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(5), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with four equivalent Sb(4)O6 octahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-61°. The Sb(1)-O(10) bond length is 1.99 Å. The Sb(1)-O(11) bond length is 2.03 Å. The Sb(1)-O(2) bond length is 1.99 Å. The Sb(1)-O(3) bond length is 2.04 Å. The Sb(1)-O(5) bond length is 1.96 Å. The Sb(1)-O(8) bond length is 2.15 Å. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(4), one O(6), and one O(9) atom. The Sb(2)-O(1) bond length is 2.10 Å. The Sb(2)-O(12) bond length is 2.04 Å. The Sb(2)-O(4) bond length is 2.09 Å. The Sb(2)-O(6) bond length is 1.91 Å. The Sb(2)-O(9) bond length is 2.00 Å. In the third Sb site, Sb(3) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(2), one O(4), and one O(9) atom. The Sb(3)-O(1) bond length is 2.17 Å. The Sb(3)-O(12) bond length is 1.99 Å. The Sb(3)-O(2) bond length is 1.92 Å. The Sb(3)-O(4) bond length is 2.09 Å. The Sb(3)-O(9) bond length is 2.08 Å. In the fourth Sb site, Sb(4) is bonded to one O(10), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, and  an edgeedge with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-58°. The Sb(4)-O(10) bond length is 1.97 Å. The Sb(4)-O(3) bond length is 2.06 Å. The Sb(4)-O(5) bond length is 1.98 Å. The Sb(4)-O(6) bond length is 2.00 Å. The Sb(4)-O(7) bond length is 2.05 Å. The Sb(4)-O(8) bond length is 2.10 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), one Sb(2), and one Sb(3) atom to form distorted edge-sharing OMgVSb2 trigonal pyramids. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sb(1) and one Sb(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sb(1), and one Sb(4) atom. In the fourth O site, O(4) is bonded to one Mg(1), one V(1), one Sb(2), and one Sb(3) atom to form distorted edge-sharing OMgVSb2 trigonal pyramids. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(4) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Sb(2) and one Sb(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Sb(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one V(1), one Sb(1), and one Sb(4) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one Sb(2), and one Sb(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Sb(1) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Mg(1), one Sb(2), and one Sb(3) atom.