ErSmO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Er(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing ErO6 octahedra. The corner-sharing octahedral tilt angles range from 42-47°. Sm(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 Er(1) and two equivalent Sm(1) atoms to form distorted corner-sharing OSm2Er2 trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Er(1) and three equivalent Sm(1) atoms.
ErSmO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Er(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing ErO6 octahedra. The corner-sharing octahedral tilt angles range from 42-47°. Both Er(1)-O(1) bond lengths are 2.30 Å. There are two shorter (2.22 Å) and two longer (2.24 Å) Er(1)-O(2) bond lengths. Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. There is one shorter (2.29 Å) and one longer (2.43 Å) Sm(1)-O(1) bond length. There are a spread of Sm(1)-O(2) bond distances ranging from 2.30-3.09 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Er(1) and two equivalent Sm(1) atoms to form distorted corner-sharing OSm2Er2 trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Er(1) and three equivalent Sm(1) atoms.