CaHo(SbO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(3), and four equivalent O(2) atoms. Ho(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. Sb(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 38-48°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Ho(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OCaHoSb2 trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Ca(1), one Ho(1), and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ca(1), one Ho(1), and two equivalent Sb(1) atoms. In the fourth O site, O(4) is bonded to one Ca(1), one Ho(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OCaHoSb2 trigonal pyramids.
CaHo(SbO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(3), and four equivalent O(2) atoms. The Ca(1)-O(1) bond length is 2.50 Å. The Ca(1)-O(4) bond length is 2.31 Å. Both Ca(1)-O(3) bond lengths are 2.39 Å. There are two shorter (2.86 Å) and two longer (2.94 Å) Ca(1)-O(2) bond lengths. Ho(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. The Ho(1)-O(1) bond length is 2.25 Å. The Ho(1)-O(4) bond length is 2.32 Å. Both Ho(1)-O(2) bond lengths are 2.25 Å. Both Ho(1)-O(3) bond lengths are 2.51 Å. Sb(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 38-48°. The Sb(1)-O(1) bond length is 2.28 Å. The Sb(1)-O(4) bond length is 2.24 Å. There is one shorter (2.20 Å) and one longer (2.23 Å) Sb(1)-O(2) bond length. There is one shorter (2.19 Å) and one longer (2.21 Å) Sb(1)-O(3) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Ho(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OCaHoSb2 trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Ca(1), one Ho(1), and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ca(1), one Ho(1), and two equivalent Sb(1) atoms. In the fourth O site, O(4) is bonded to one Ca(1), one Ho(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OCaHoSb2 trigonal pyramids.