MgHo2(SbO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(2), one O(4), and one O(6) atom. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(6), one O(8), and one O(9) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a distorted octahedral geometry to one O(1), one O(10), one O(12), one O(2), one O(4), and one O(9) atom. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one O(11), one O(12), one O(3), one O(5), and one O(8) atom. In the third Sb site, Sb(3) is bonded in an octahedral geometry to one O(11), one O(3), one O(5), one O(6), one O(7), and one O(8) atom. In the fourth Sb site, Sb(4) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(4), one O(7), and one O(9) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Ho(2), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Ho(1), one Sb(1), and one Sb(4) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ho(1), one Sb(2), and one Sb(3) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), one Ho(1), one Ho(2), one Sb(1), and one Sb(4) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Ho(1), one Sb(2), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mg(1), one Ho(2), and one Sb(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Ho(1), one Sb(3), and one Sb(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ho(2), one Sb(2), and one Sb(3) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ho(2), one Sb(1), and one Sb(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mg(1), one Ho(2), one Sb(1), and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a distorted square co-planar geometry to one Ho(1), one Ho(2), one Sb(2), and one Sb(3) atom. In the twelfth O site, O(12) is bonded in a T-shaped geometry to one Ho(1), one Sb(1), and one Sb(2) atom.
MgHo2(SbO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(2), one O(4), and one O(6) atom. The Mg(1)-O(1) bond length is 2.19 Å. The Mg(1)-O(10) bond length is 2.09 Å. The Mg(1)-O(2) bond length is 2.05 Å. The Mg(1)-O(4) bond length is 2.62 Å. The Mg(1)-O(6) bond length is 1.94 Å. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. The Ho(1)-O(11) bond length is 2.54 Å. The Ho(1)-O(12) bond length is 2.28 Å. The Ho(1)-O(2) bond length is 2.21 Å. The Ho(1)-O(3) bond length is 2.25 Å. The Ho(1)-O(4) bond length is 2.57 Å. The Ho(1)-O(5) bond length is 2.30 Å. The Ho(1)-O(7) bond length is 2.27 Å. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(6), one O(8), and one O(9) atom. The Ho(2)-O(1) bond length is 2.26 Å. The Ho(2)-O(10) bond length is 2.65 Å. The Ho(2)-O(11) bond length is 2.46 Å. The Ho(2)-O(4) bond length is 2.95 Å. The Ho(2)-O(6) bond length is 2.28 Å. The Ho(2)-O(8) bond length is 2.18 Å. The Ho(2)-O(9) bond length is 2.35 Å. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a distorted octahedral geometry to one O(1), one O(10), one O(12), one O(2), one O(4), and one O(9) atom. The Sb(1)-O(1) bond length is 2.03 Å. The Sb(1)-O(10) bond length is 2.27 Å. The Sb(1)-O(12) bond length is 2.03 Å. The Sb(1)-O(2) bond length is 1.99 Å. The Sb(1)-O(4) bond length is 1.98 Å. The Sb(1)-O(9) bond length is 2.02 Å. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one O(11), one O(12), one O(3), one O(5), and one O(8) atom. The Sb(2)-O(11) bond length is 2.54 Å. The Sb(2)-O(12) bond length is 2.12 Å. The Sb(2)-O(3) bond length is 2.06 Å. The Sb(2)-O(5) bond length is 2.10 Å. The Sb(2)-O(8) bond length is 2.62 Å. In the third Sb site, Sb(3) is bonded in an octahedral geometry to one O(11), one O(3), one O(5), one O(6), one O(7), and one O(8) atom. The Sb(3)-O(11) bond length is 2.00 Å. The Sb(3)-O(3) bond length is 2.06 Å. The Sb(3)-O(5) bond length is 2.08 Å. The Sb(3)-O(6) bond length is 1.98 Å. The Sb(3)-O(7) bond length is 2.09 Å. The Sb(3)-O(8) bond length is 1.96 Å. In the fourth Sb site, Sb(4) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(4), one O(7), and one O(9) atom. The Sb(4)-O(10) bond length is 2.17 Å. The Sb(4)-O(2) bond length is 2.64 Å. The Sb(4)-O(4) bond length is 2.34 Å. The Sb(4)-O(7) bond length is 2.03 Å. The Sb(4)-O(9) bond length is 2.16 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Ho(2), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Ho(1), one Sb(1), and one Sb(4) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ho(1), one Sb(2), and one Sb(3) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), one Ho(1), one Ho(2), one Sb(1), and one Sb(4) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Ho(1), one Sb(2), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mg(1), one Ho(2), and one Sb(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Ho(1), one Sb(3), and one Sb(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ho(2), one Sb(2), and one Sb(3) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ho(2), one Sb(1), and one Sb(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mg(1), one Ho(2), one Sb(1), and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a distorted square co-planar geometry to one Ho(1), one Ho(2), one Sb(2), and one Sb(3) atom. In the twelfth O site, O(12) is bonded in a T-shaped geometry to one Ho(1), one Sb(1), and one Sb(2) atom.