K4Mn(SO5)4MnO4 crystallizes in the monoclinic C2/m space group. The structure consists of two MnO4 clusters inside a K4Mn(SO5)4 framework. In each MnO4 cluster, Mn(1) is bonded in a square co-planar geometry to four equivalent O(5) atoms. O(5) is bonded in a single-bond geometry to one Mn(1) atom. In the K4Mn(SO5)4 framework, there are two inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. Mn(2) is bonded in a square co-planar geometry to four equivalent O(6) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1) and one S(1) atom. In the second O site, O(6) is bonded in a single-bond geometry to one K(2) and one Mn(2) atom. In the third O site, O(1) is bonded in a distorted linear geometry to one K(1) and one S(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one K(2) and one S(1) atom. In the fifth O site, O(3) is bonded in a single-bond geometry to one K(2) and one S(1) atom.
K4Mn(SO5)4MnO4 crystallizes in the monoclinic C2/m space group. The structure consists of two MnO4 clusters inside a K4Mn(SO5)4 framework. In each MnO4 cluster, Mn(1) is bonded in a square co-planar geometry to four equivalent O(5) atoms. All Mn(1)-O(5) bond lengths are 1.72 Å. O(5) is bonded in a single-bond geometry to one Mn(1) atom. In the K4Mn(SO5)4 framework, there are two inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. Both K(1)-O(1) bond lengths are 2.69 Å. Both K(1)-O(4) bond lengths are 2.73 Å. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. Both K(2)-O(2) bond lengths are 2.76 Å. Both K(2)-O(3) bond lengths are 3.12 Å. Both K(2)-O(6) bond lengths are 3.29 Å. Mn(2) is bonded in a square co-planar geometry to four equivalent O(6) atoms. All Mn(2)-O(6) bond lengths are 1.73 Å. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The S(1)-O(1) bond length is 1.48 Å. The S(1)-O(2) bond length is 1.49 Å. The S(1)-O(3) bond length is 1.48 Å. The S(1)-O(4) bond length is 1.48 Å. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1) and one S(1) atom. In the second O site, O(6) is bonded in a single-bond geometry to one K(2) and one Mn(2) atom. In the third O site, O(1) is bonded in a distorted linear geometry to one K(1) and one S(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one K(2) and one S(1) atom. In the fifth O site, O(3) is bonded in a single-bond geometry to one K(2) and one S(1) atom.