La2Co2O5 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. In the second Co site, Co(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. There are three inequivalent O sites. In the first O site, O(3) is bonded to two equivalent La(1) and two equivalent Co(2) atoms to form corner-sharing OLa2Co2 tetrahedra. In the second O site, O(1) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Co(1) atoms. In the third O site, O(2) is bonded in a 5-coordinate geometry to three equivalent La(1), one Co(1), and one Co(2) atom.
La2Co2O5 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. The La(1)-O(3) bond length is 2.39 Å. There are a spread of La(1)-O(2) bond distances ranging from 2.35-2.91 Å. There are a spread of La(1)-O(1) bond distances ranging from 2.52-2.81 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. Both Co(1)-O(2) bond lengths are 2.29 Å. All Co(1)-O(1) bond lengths are 2.02 Å. In the second Co site, Co(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. Both Co(2)-O(2) bond lengths are 1.96 Å. There is one shorter (2.00 Å) and one longer (2.08 Å) Co(2)-O(3) bond length. There are three inequivalent O sites. In the first O site, O(3) is bonded to two equivalent La(1) and two equivalent Co(2) atoms to form corner-sharing OLa2Co2 tetrahedra. In the second O site, O(1) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Co(1) atoms. In the third O site, O(2) is bonded in a 5-coordinate geometry to three equivalent La(1), one Co(1), and one Co(2) atom.