K2C2O4H2O crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), and four equivalent O(2) atoms. C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. H(1) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(3) is bonded in a water-like geometry to two equivalent K(1) and two equivalent H(1) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to four equivalent K(1) and one C(1) atom.
K2C2O4H2O crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), and four equivalent O(2) atoms. The K(1)-O(3) bond length is 2.94 Å. There is one shorter (2.79 Å) and one longer (2.82 Å) K(1)-O(1) bond length. There are a spread of K(1)-O(2) bond distances ranging from 2.85-3.03 Å. C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(2) bond length is 1.27 Å. H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 1.00 Å. There are three inequivalent O sites. In the first O site, O(3) is bonded in a water-like geometry to two equivalent K(1) and two equivalent H(1) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to four equivalent K(1) and one C(1) atom.