KMnO2 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. Mn(1) is bonded to two equivalent O(1) and three equivalent O(2) atoms to form edge-sharing MnO5 square pyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent K(1) and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent K(1) and three equivalent Mn(1) atoms.
KMnO2 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. There is one shorter (2.67 Å) and two longer (2.72 Å) K(1)-O(1) bond lengths. There are two shorter (2.84 Å) and one longer (3.07 Å) K(1)-O(2) bond length. Mn(1) is bonded to two equivalent O(1) and three equivalent O(2) atoms to form edge-sharing MnO5 square pyramids. Both Mn(1)-O(1) bond lengths are 1.95 Å. There are two shorter (1.98 Å) and one longer (2.29 Å) Mn(1)-O(2) bond length. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent K(1) and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent K(1) and three equivalent Mn(1) atoms.