Ca2YMnO5 crystallizes in the orthorhombic Ima2 space group. Ca(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), and four equivalent O(3) atoms. Y(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted YO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 35°. Mn(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 15°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Y(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Y(1), and one Mn(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to four equivalent Ca(1) and two equivalent Mn(1) atoms.
Ca2YMnO5 crystallizes in the orthorhombic Ima2 space group. Ca(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), and four equivalent O(3) atoms. The Ca(1)-O(1) bond length is 2.57 Å. There is one shorter (2.32 Å) and one longer (2.45 Å) Ca(1)-O(2) bond length. There are a spread of Ca(1)-O(3) bond distances ranging from 2.42-2.70 Å. Y(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted YO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 35°. There is one shorter (2.20 Å) and one longer (2.23 Å) Y(1)-O(1) bond length. Both Y(1)-O(2) bond lengths are 2.13 Å. Mn(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 15°. Both Mn(1)-O(2) bond lengths are 2.19 Å. There are two shorter (1.94 Å) and two longer (1.99 Å) Mn(1)-O(3) bond lengths. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Y(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Y(1), and one Mn(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to four equivalent Ca(1) and two equivalent Mn(1) atoms.