La2CoO4 is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. La(1) is bonded in a 9-coordinate geometry to four equivalent O(1) and five equivalent O(2) atoms. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 6-coordinate geometry to five equivalent La(1) and one Co(1) atom. In the second O site, O(1) is bonded to four equivalent La(1) and two equivalent Co(1) atoms to form a mixture of edge, face, and corner-sharing OLa4Co2 octahedra. The corner-sharing octahedra are not tilted.
La2CoO4 is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. La(1) is bonded in a 9-coordinate geometry to four equivalent O(1) and five equivalent O(2) atoms. All La(1)-O(1) bond lengths are 2.62 Å. There is one shorter (2.30 Å) and four longer (2.81 Å) La(1)-O(2) bond lengths. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedra are not tilted. Both Co(1)-O(2) bond lengths are 2.32 Å. All Co(1)-O(1) bond lengths are 1.95 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 6-coordinate geometry to five equivalent La(1) and one Co(1) atom. In the second O site, O(1) is bonded to four equivalent La(1) and two equivalent Co(1) atoms to form a mixture of edge, face, and corner-sharing OLa4Co2 octahedra. The corner-sharing octahedra are not tilted.