La2Cu2O5 crystallizes in the orthorhombic Pbam space group. La(1) is bonded in a 10-coordinate geometry to two equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. Cu(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CuO5 square pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent La(1) and two equivalent Cu(1) atoms to form a mixture of distorted face, corner, and edge-sharing OLa4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 56-71°. In the second O site, O(2) is bonded in a 4-coordinate geometry to four equivalent La(1) and two equivalent Cu(1) atoms. In the third O site, O(3) is bonded to four equivalent La(1) and two equivalent Cu(1) atoms to form a mixture of distorted face, corner, and edge-sharing OLa4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 3-71°.
La2Cu2O5 crystallizes in the orthorhombic Pbam space group. La(1) is bonded in a 10-coordinate geometry to two equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. Both La(1)-O(1) bond lengths are 2.66 Å. There are two shorter (2.43 Å) and two longer (2.96 Å) La(1)-O(2) bond lengths. There are a spread of La(1)-O(3) bond distances ranging from 2.59-2.87 Å. Cu(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CuO5 square pyramids. The Cu(1)-O(1) bond length is 1.97 Å. There is one shorter (1.92 Å) and one longer (2.28 Å) Cu(1)-O(2) bond length. Both Cu(1)-O(3) bond lengths are 1.96 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent La(1) and two equivalent Cu(1) atoms to form a mixture of distorted face, corner, and edge-sharing OLa4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 56-71°. In the second O site, O(2) is bonded in a 4-coordinate geometry to four equivalent La(1) and two equivalent Cu(1) atoms. In the third O site, O(3) is bonded to four equivalent La(1) and two equivalent Cu(1) atoms to form a mixture of distorted face, corner, and edge-sharing OLa4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 3-71°.