La2Zn2O5 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 8-coordinate geometry to one O(2), three equivalent O(1), and four equivalent O(3) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. In the second Zn site, Zn(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form ZnO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent La(1), one Zn(1), and one Zn(2) atom. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent Zn(2) atoms to form corner-sharing OLa2Zn2 tetrahedra. In the third O site, O(3) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Zn(1) atoms.
La2Zn2O5 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 8-coordinate geometry to one O(2), three equivalent O(1), and four equivalent O(3) atoms. The La(1)-O(2) bond length is 2.39 Å. There are a spread of La(1)-O(1) bond distances ranging from 2.34-2.97 Å. There are a spread of La(1)-O(3) bond distances ranging from 2.52-2.82 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 16°. Both Zn(1)-O(1) bond lengths are 2.30 Å. All Zn(1)-O(3) bond lengths are 2.03 Å. In the second Zn site, Zn(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form ZnO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. Both Zn(2)-O(1) bond lengths are 1.95 Å. There is one shorter (2.03 Å) and one longer (2.09 Å) Zn(2)-O(2) bond length. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent La(1), one Zn(1), and one Zn(2) atom. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent Zn(2) atoms to form corner-sharing OLa2Zn2 tetrahedra. In the third O site, O(3) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Zn(1) atoms.