MgZn2(SbO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(12), one O(2), one O(6), and one O(7) atom. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(4), one O(5), and one O(6) atom. In the second Zn site, Zn(2) is bonded in a square co-planar geometry to one O(2), one O(3), one O(8), and one O(9) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(1), one O(10), one O(12), one O(2), one O(6), and one O(7) atom to form edge-sharing SbO6 octahedra. In the second Sb site, Sb(2) is bonded to one O(11), one O(4), one O(5), one O(8), and one O(9) atom to form distorted corner-sharing SbO5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 37-52°. In the third Sb site, Sb(3) is bonded to one O(10), one O(11), one O(3), one O(4), one O(5), and one O(7) atom to form SbO6 octahedra that share corners with three equivalent Sb(2)O5 trigonal bipyramids and  an edgeedge with one Sb(1)O6 octahedra. In the fourth Sb site, Sb(4) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(6), one O(8), and one O(9) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Zn(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a water-like geometry to one Zn(2) and one Sb(3) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Zn(1), one Sb(2), and one Sb(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Zn(1), one Sb(2), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Zn(1), one Sb(1), and one Sb(4) atom. In the seventh O site, O(7) is bonded in a T-shaped geometry to one Mg(1), one Sb(1), and one Sb(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Zn(2), one Sb(2), and one Sb(4) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Zn(2), one Sb(2), and one Sb(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Zn(1), one Sb(1), and one Sb(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Sb(2) and one Sb(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Mg(1), one Zn(1), one Sb(1), and one Sb(4) atom.
MgZn2(SbO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(12), one O(2), one O(6), and one O(7) atom. The Mg(1)-O(12) bond length is 1.96 Å. The Mg(1)-O(2) bond length is 1.98 Å. The Mg(1)-O(6) bond length is 1.96 Å. The Mg(1)-O(7) bond length is 2.02 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(4), one O(5), and one O(6) atom. The Zn(1)-O(10) bond length is 1.96 Å. The Zn(1)-O(12) bond length is 2.17 Å. The Zn(1)-O(4) bond length is 2.09 Å. The Zn(1)-O(5) bond length is 2.09 Å. The Zn(1)-O(6) bond length is 2.19 Å. In the second Zn site, Zn(2) is bonded in a square co-planar geometry to one O(2), one O(3), one O(8), and one O(9) atom. The Zn(2)-O(2) bond length is 2.01 Å. The Zn(2)-O(3) bond length is 1.95 Å. The Zn(2)-O(8) bond length is 2.10 Å. The Zn(2)-O(9) bond length is 2.10 Å. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(1), one O(10), one O(12), one O(2), one O(6), and one O(7) atom to form edge-sharing SbO6 octahedra. The Sb(1)-O(1) bond length is 1.97 Å. The Sb(1)-O(10) bond length is 2.02 Å. The Sb(1)-O(12) bond length is 2.01 Å. The Sb(1)-O(2) bond length is 2.00 Å. The Sb(1)-O(6) bond length is 2.01 Å. The Sb(1)-O(7) bond length is 2.08 Å. In the second Sb site, Sb(2) is bonded to one O(11), one O(4), one O(5), one O(8), and one O(9) atom to form distorted corner-sharing SbO5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 37-52°. The Sb(2)-O(11) bond length is 1.94 Å. The Sb(2)-O(4) bond length is 1.99 Å. The Sb(2)-O(5) bond length is 1.99 Å. The Sb(2)-O(8) bond length is 2.01 Å. The Sb(2)-O(9) bond length is 2.01 Å. In the third Sb site, Sb(3) is bonded to one O(10), one O(11), one O(3), one O(4), one O(5), and one O(7) atom to form SbO6 octahedra that share corners with three equivalent Sb(2)O5 trigonal bipyramids and  an edgeedge with one Sb(1)O6 octahedra. The Sb(3)-O(10) bond length is 2.10 Å. The Sb(3)-O(11) bond length is 2.03 Å. The Sb(3)-O(3) bond length is 1.91 Å. The Sb(3)-O(4) bond length is 2.06 Å. The Sb(3)-O(5) bond length is 2.06 Å. The Sb(3)-O(7) bond length is 2.03 Å. In the fourth Sb site, Sb(4) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(6), one O(8), and one O(9) atom. The Sb(4)-O(1) bond length is 1.97 Å. The Sb(4)-O(12) bond length is 2.63 Å. The Sb(4)-O(6) bond length is 2.62 Å. The Sb(4)-O(8) bond length is 2.07 Å. The Sb(4)-O(9) bond length is 2.07 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Zn(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a water-like geometry to one Zn(2) and one Sb(3) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Zn(1), one Sb(2), and one Sb(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Zn(1), one Sb(2), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Zn(1), one Sb(1), and one Sb(4) atom. In the seventh O site, O(7) is bonded in a T-shaped geometry to one Mg(1), one Sb(1), and one Sb(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Zn(2), one Sb(2), and one Sb(4) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Zn(2), one Sb(2), and one Sb(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Zn(1), one Sb(1), and one Sb(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Sb(2) and one Sb(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Mg(1), one Zn(1), one Sb(1), and one Sb(4) atom.