K2Cr2O5 crystallizes in the orthorhombic Ima2 space group. K(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. In the second Cr site, Cr(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form corner-sharing CrO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent K(1) and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Cr(1), and one Cr(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Cr(2) atoms.
K2Cr2O5 crystallizes in the orthorhombic Ima2 space group. K(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(2), and four equivalent O(1) atoms. The K(1)-O(3) bond length is 2.67 Å. There is one shorter (2.66 Å) and one longer (2.81 Å) K(1)-O(2) bond length. There are a spread of K(1)-O(1) bond distances ranging from 2.71-2.80 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Both Cr(1)-O(2) bond lengths are 2.05 Å. There are two shorter (1.77 Å) and two longer (2.57 Å) Cr(1)-O(1) bond lengths. In the second Cr site, Cr(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form corner-sharing CrO4 tetrahedra. Both Cr(2)-O(2) bond lengths are 1.77 Å. There is one shorter (1.81 Å) and one longer (1.86 Å) Cr(2)-O(3) bond length. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent K(1) and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Cr(1), and one Cr(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Cr(2) atoms.