Ho3ScO6 is Ilmenite-like structured and crystallizes in the trigonal R-3 space group. Ho(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted HoO6 pentagonal pyramids that share  a cornercorner with one Sc(1)O6 octahedra,  a cornercorner with one Sc(2)O6 octahedra, corners with four equivalent Ho(1)O6 pentagonal pyramids,  an edgeedge with one Sc(1)O6 octahedra,  an edgeedge with one Sc(2)O6 octahedra, and edges with four equivalent Ho(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 37-48°. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to six equivalent O(1) atoms to form ScO6 octahedra that share corners with six equivalent Ho(1)O6 pentagonal pyramids and edges with six equivalent Ho(1)O6 pentagonal pyramids. In the second Sc site, Sc(2) is bonded to six equivalent O(2) atoms to form ScO6 octahedra that share corners with six equivalent Ho(1)O6 pentagonal pyramids and edges with six equivalent Ho(1)O6 pentagonal pyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to three equivalent Ho(1) and one Sc(1) atom. In the second O site, O(2) is bonded to three equivalent Ho(1) and one Sc(2) atom to form a mixture of edge and corner-sharing OHo3Sc trigonal pyramids.
Ho3ScO6 is Ilmenite-like structured and crystallizes in the trigonal R-3 space group. Ho(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted HoO6 pentagonal pyramids that share  a cornercorner with one Sc(1)O6 octahedra,  a cornercorner with one Sc(2)O6 octahedra, corners with four equivalent Ho(1)O6 pentagonal pyramids,  an edgeedge with one Sc(1)O6 octahedra,  an edgeedge with one Sc(2)O6 octahedra, and edges with four equivalent Ho(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 37-48°. There are a spread of Ho(1)-O(1) bond distances ranging from 2.23-2.28 Å. There is one shorter (2.20 Å) and two longer (2.31 Å) Ho(1)-O(2) bond lengths. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to six equivalent O(1) atoms to form ScO6 octahedra that share corners with six equivalent Ho(1)O6 pentagonal pyramids and edges with six equivalent Ho(1)O6 pentagonal pyramids. All Sc(1)-O(1) bond lengths are 2.10 Å. In the second Sc site, Sc(2) is bonded to six equivalent O(2) atoms to form ScO6 octahedra that share corners with six equivalent Ho(1)O6 pentagonal pyramids and edges with six equivalent Ho(1)O6 pentagonal pyramids. All Sc(2)-O(2) bond lengths are 2.14 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to three equivalent Ho(1) and one Sc(1) atom. In the second O site, O(2) is bonded to three equivalent Ho(1) and one Sc(2) atom to form a mixture of edge and corner-sharing OHo3Sc trigonal pyramids.