MgHo(CoO3)2 crystallizes in the monoclinic Pc space group. Mg(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms. Ho(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 35-44°. In the second Co site, Co(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 35-44°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Ho(1), one Co(1), and one Co(2) atom to form distorted corner-sharing OHoMgCo2 trigonal pyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Ho(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Ho(1), one Co(1), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Ho(1), one Co(1), and one Co(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Ho(1), one Co(1), and one Co(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Ho(1), one Co(1), and one Co(2) atom to form distorted corner-sharing OHoMgCo2 trigonal pyramids.
MgHo(CoO3)2 crystallizes in the monoclinic Pc space group. Mg(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms. The Mg(1)-O(1) bond length is 2.22 Å. The Mg(1)-O(4) bond length is 2.16 Å. The Mg(1)-O(5) bond length is 2.14 Å. The Mg(1)-O(6) bond length is 2.08 Å. There is one shorter (2.36 Å) and one longer (2.75 Å) Mg(1)-O(2) bond length. There is one shorter (2.36 Å) and one longer (2.62 Å) Mg(1)-O(3) bond length. Ho(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms. The Ho(1)-O(1) bond length is 2.24 Å. The Ho(1)-O(2) bond length is 2.25 Å. The Ho(1)-O(3) bond length is 2.27 Å. The Ho(1)-O(6) bond length is 2.30 Å. There is one shorter (2.43 Å) and one longer (2.54 Å) Ho(1)-O(4) bond length. There is one shorter (2.43 Å) and one longer (2.68 Å) Ho(1)-O(5) bond length. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 35-44°. The Co(1)-O(1) bond length is 1.85 Å. The Co(1)-O(2) bond length is 2.05 Å. The Co(1)-O(3) bond length is 1.91 Å. The Co(1)-O(4) bond length is 1.96 Å. The Co(1)-O(5) bond length is 2.21 Å. The Co(1)-O(6) bond length is 1.86 Å. In the second Co site, Co(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 35-44°. The Co(2)-O(1) bond length is 2.06 Å. The Co(2)-O(2) bond length is 1.85 Å. The Co(2)-O(3) bond length is 1.98 Å. The Co(2)-O(4) bond length is 2.13 Å. The Co(2)-O(5) bond length is 1.87 Å. The Co(2)-O(6) bond length is 2.12 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Ho(1), one Co(1), and one Co(2) atom to form distorted corner-sharing OHoMgCo2 trigonal pyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Ho(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Ho(1), one Co(1), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Ho(1), one Co(1), and one Co(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Ho(1), one Co(1), and one Co(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Ho(1), one Co(1), and one Co(2) atom to form distorted corner-sharing OHoMgCo2 trigonal pyramids.