Ho2TiO5 crystallizes in the monoclinic C2/c space group. Ho(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ho(1) and one Ti(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Ho(1) and one Ti(1) atom. In the third O site, O(3) is bonded to two equivalent Ho(1) and two equivalent Ti(1) atoms to form distorted corner-sharing OHo2Ti2 trigonal pyramids.
Ho2TiO5 crystallizes in the monoclinic C2/c space group. Ho(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. The Ho(1)-O(3) bond length is 2.35 Å. There is one shorter (2.18 Å) and one longer (2.20 Å) Ho(1)-O(1) bond length. There are a spread of Ho(1)-O(2) bond distances ranging from 2.23-2.54 Å. Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 50°. Both Ti(1)-O(1) bond lengths are 1.98 Å. Both Ti(1)-O(2) bond lengths are 1.96 Å. Both Ti(1)-O(3) bond lengths are 2.08 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ho(1) and one Ti(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Ho(1) and one Ti(1) atom. In the third O site, O(3) is bonded to two equivalent Ho(1) and two equivalent Ti(1) atoms to form distorted corner-sharing OHo2Ti2 trigonal pyramids.