LaMnO3 crystallizes in the orthorhombic Pnnm space group. La(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent La(1), one Mn(1), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OLa4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent La(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent La(1), one Mn(1), and one Mn(2) atom.
LaMnO3 crystallizes in the orthorhombic Pnnm space group. La(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Both La(1)-O(2) bond lengths are 2.50 Å. Both La(1)-O(3) bond lengths are 2.51 Å. There are two shorter (2.75 Å) and two longer (2.80 Å) La(1)-O(1) bond lengths. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°. Both Mn(1)-O(1) bond lengths are 2.14 Å. Both Mn(1)-O(2) bond lengths are 1.90 Å. Both Mn(1)-O(3) bond lengths are 2.02 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°. Both Mn(2)-O(1) bond lengths are 1.91 Å. Both Mn(2)-O(2) bond lengths are 2.14 Å. Both Mn(2)-O(3) bond lengths are 2.02 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent La(1), one Mn(1), and one Mn(2) atom to form a mixture of distorted corner and edge-sharing OLa4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent La(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent La(1), one Mn(1), and one Mn(2) atom.