TmYO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Tm(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing TmO6 octahedra. The corner-sharing octahedral tilt angles range from 44-49°. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Y(1) atoms to form distorted corner-sharing OY2Tm2 trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Tm(1) and three equivalent Y(1) atoms.
TmYO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Tm(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing TmO6 octahedra. The corner-sharing octahedral tilt angles range from 44-49°. Both Tm(1)-O(1) bond lengths are 2.28 Å. There are two shorter (2.20 Å) and two longer (2.22 Å) Tm(1)-O(2) bond lengths. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. There is one shorter (2.24 Å) and one longer (2.37 Å) Y(1)-O(1) bond length. There are a spread of Y(1)-O(2) bond distances ranging from 2.24-3.03 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Y(1) atoms to form distorted corner-sharing OY2Tm2 trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Tm(1) and three equivalent Y(1) atoms.