Ca2HoMn4BiO12 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. Ho(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 26-34°. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 26-32°. Bi(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), two equivalent Mn(2), and one Bi(1) atom to form distorted corner-sharing OCaMn2Bi tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ca(1), two equivalent Mn(1), and one Bi(1) atom. In the third O site, O(3) is bonded to one Ca(2), one Ho(1), and two equivalent Mn(2) atoms to form distorted OCaHoMn2 tetrahedra that share corners with two equivalent O(4)CaHoMn2 tetrahedra and corners with two equivalent O(1)CaMn2Bi tetrahedra. In the fourth O site, O(4) is bonded to one Ca(2), one Ho(1), and two equivalent Mn(1) atoms to form distorted corner-sharing OCaHoMn2 tetrahedra. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(2), one Mn(1), one Mn(2), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(2), one Ho(1), one Mn(1), and one Mn(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Ca(2), one Ho(1), one Mn(1), one Mn(2), and one Bi(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Ca(1), one Ho(1), one Mn(1), one Mn(2), and one Bi(1) atom.
Ca2HoMn4BiO12 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms. The Ca(1)-O(1) bond length is 2.42 Å. The Ca(1)-O(2) bond length is 2.34 Å. Both Ca(1)-O(5) bond lengths are 2.61 Å. Both Ca(1)-O(6) bond lengths are 2.72 Å. Both Ca(1)-O(8) bond lengths are 2.37 Å. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. The Ca(2)-O(3) bond length is 2.35 Å. The Ca(2)-O(4) bond length is 2.43 Å. Both Ca(2)-O(5) bond lengths are 2.64 Å. Both Ca(2)-O(6) bond lengths are 2.58 Å. Both Ca(2)-O(7) bond lengths are 2.38 Å. Ho(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms. The Ho(1)-O(3) bond length is 2.31 Å. The Ho(1)-O(4) bond length is 2.28 Å. Both Ho(1)-O(6) bond lengths are 2.31 Å. Both Ho(1)-O(7) bond lengths are 2.45 Å. Both Ho(1)-O(8) bond lengths are 2.64 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 26-34°. The Mn(1)-O(2) bond length is 1.99 Å. The Mn(1)-O(4) bond length is 1.97 Å. The Mn(1)-O(5) bond length is 2.00 Å. The Mn(1)-O(6) bond length is 1.99 Å. The Mn(1)-O(7) bond length is 2.01 Å. The Mn(1)-O(8) bond length is 2.00 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 26-32°. The Mn(2)-O(1) bond length is 1.99 Å. The Mn(2)-O(3) bond length is 1.95 Å. The Mn(2)-O(5) bond length is 1.99 Å. The Mn(2)-O(6) bond length is 1.99 Å. The Mn(2)-O(7) bond length is 2.00 Å. The Mn(2)-O(8) bond length is 2.02 Å. Bi(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms. The Bi(1)-O(1) bond length is 2.34 Å. The Bi(1)-O(2) bond length is 2.41 Å. Both Bi(1)-O(5) bond lengths are 2.37 Å. Both Bi(1)-O(7) bond lengths are 2.74 Å. Both Bi(1)-O(8) bond lengths are 2.59 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), two equivalent Mn(2), and one Bi(1) atom to form distorted corner-sharing OCaMn2Bi tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ca(1), two equivalent Mn(1), and one Bi(1) atom. In the third O site, O(3) is bonded to one Ca(2), one Ho(1), and two equivalent Mn(2) atoms to form distorted OCaHoMn2 tetrahedra that share corners with two equivalent O(4)CaHoMn2 tetrahedra and corners with two equivalent O(1)CaMn2Bi tetrahedra. In the fourth O site, O(4) is bonded to one Ca(2), one Ho(1), and two equivalent Mn(1) atoms to form distorted corner-sharing OCaHoMn2 tetrahedra. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(2), one Mn(1), one Mn(2), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(2), one Ho(1), one Mn(1), and one Mn(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Ca(2), one Ho(1), one Mn(1), one Mn(2), and one Bi(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Ca(1), one Ho(1), one Mn(1), one Mn(2), and one Bi(1) atom.