CaHo(SnO3)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. Sn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. 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 Sn(1) atoms to form distorted corner-sharing OCaHoSn2 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 Sn(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 Sn(1) atoms. In the fourth O site, O(4) is bonded to one Ca(1), one Ho(1), and two equivalent Sn(1) atoms to form distorted corner-sharing OCaHoSn2 trigonal pyramids.
CaHo(SnO3)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 2.30 Å. Both Ca(1)-O(3) bond lengths are 2.38 Å. There are two shorter (2.81 Å) and two longer (2.90 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 2.27 Å. The Ho(1)-O(4) bond length is 2.31 Å. Both Ho(1)-O(2) bond lengths are 2.27 Å. Both Ho(1)-O(3) bond lengths are 2.48 Å. Sn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. The Sn(1)-O(1) bond length is 2.21 Å. The Sn(1)-O(4) bond length is 2.19 Å. Both Sn(1)-O(2) bond lengths are 2.16 Å. There is one shorter (2.15 Å) and one longer (2.17 Å) Sn(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 Sn(1) atoms to form distorted corner-sharing OCaHoSn2 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 Sn(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 Sn(1) atoms. In the fourth O site, O(4) is bonded to one Ca(1), one Ho(1), and two equivalent Sn(1) atoms to form distorted corner-sharing OCaHoSn2 trigonal pyramids.