KMnO4 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. Mn(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Mn(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1) and one Mn(1) atom.
KMnO4 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. The K(1)-O(3) bond length is 2.75 Å. There is one shorter (2.81 Å) and two longer (3.17 Å) K(1)-O(2) bond lengths. There are a spread of K(1)-O(1) bond distances ranging from 2.81-2.95 Å. Mn(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. The Mn(1)-O(2) bond length is 1.60 Å. The Mn(1)-O(3) bond length is 1.60 Å. Both Mn(1)-O(1) bond lengths are 1.61 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Mn(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1) and one Mn(1) atom.