TmGeO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. Tm(1) is bonded to twelve equivalent O(1) atoms to form TmO12 cuboctahedra that share corners with twelve equivalent Tm(1)O12 cuboctahedra, faces with six equivalent Tm(1)O12 cuboctahedra, and faces with eight equivalent Ge(1)O6 octahedra. Ge(1) is bonded to six equivalent O(1) atoms to form GeO6 octahedra that share corners with six equivalent Ge(1)O6 octahedra and faces with eight equivalent Tm(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. O(1) is bonded to four equivalent Tm(1) and two equivalent Ge(1) atoms to form a mixture of distorted face, corner, and edge-sharing OTm4Ge2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°.
TmGeO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. Tm(1) is bonded to twelve equivalent O(1) atoms to form TmO12 cuboctahedra that share corners with twelve equivalent Tm(1)O12 cuboctahedra, faces with six equivalent Tm(1)O12 cuboctahedra, and faces with eight equivalent Ge(1)O6 octahedra. All Tm(1)-O(1) bond lengths are 2.75 Å. Ge(1) is bonded to six equivalent O(1) atoms to form GeO6 octahedra that share corners with six equivalent Ge(1)O6 octahedra and faces with eight equivalent Tm(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Ge(1)-O(1) bond lengths are 1.94 Å. O(1) is bonded to four equivalent Tm(1) and two equivalent Ge(1) atoms to form a mixture of distorted face, corner, and edge-sharing OTm4Ge2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°.