KH2O(CH)2H4(C3O)3(H2O)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four 02329_fluka molecules, two potassium--water (1/1) molecules, four water molecules, and one H4(C3O)3 cluster. In the H4(C3O)3 cluster, there are nine inequivalent C sites. In the first C site, C(4) is bonded in a single-bond geometry to one C(3), one C(5), and one O(3) atom. The C(4)-C(3) bond length is 1.50 Å. The C(4)-C(5) bond length is 1.48 Å. The C(4)-O(3) bond length is 1.24 Å. In the second C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. The C(5)-C(6) bond length is 1.41 Å. The C(5)-C(7) bond length is 1.41 Å. In the third C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one C(8), and one H(6) atom. The C(6)-C(8) bond length is 1.39 Å. The C(6)-H(6) bond length is 1.09 Å. In the fourth C site, C(7) is bonded in a distorted single-bond geometry to one C(5) and one H(7) atom. The C(7)-H(7) bond length is 1.09 Å. In the fifth C site, C(8) is bonded in a distorted single-bond geometry to one C(6) and one H(8) atom. The C(8)-H(8) bond length is 1.09 Å. In the sixth C site, C(11) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(3) atom. The C(11)-C(1) bond length is 1.52 Å. The C(11)-C(2) bond length is 1.40 Å. The C(11)-C(3) bond length is 1.41 Å. In the seventh C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(1), and one O(2) atom. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.28 Å. In the eighth C site, C(2) is bonded in a distorted single-bond geometry to one C(11), one C(3), and one H(3) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-H(3) bond length is 1.09 Å. In the ninth C site, C(3) is bonded in a trigonal planar geometry to one C(11), one C(2), and one C(4) atom. There are four inequivalent H sites. In the first H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(6) is bonded in a single-bond geometry to one C(6) atom. In the third H site, H(7) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(8) is bonded in a single-bond geometry to one C(8) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one C(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(4) atom. Linkers: 2 [CH]=CC(=[CH])C(=O)c1cc(C([O])=O)c(C(=O)c2ccccc2)cc1C([O])=O ,2 [CH]=C[C][C]c1cc(C([O])=O)c(C(=O)c2ccccc2)cc1C([O])=O ,1 [O]C(=O)c1cc(C(=O)c2ccccc2)c(C([O])=O)cc1C(=O)c1ccccc1 ,2 [CH]=[C][C]c1cc(C([O])=O)c(C(=O)c2ccccc2)cc1C([O])=O ,4 O. Metal clusters: 2 [K]. The MOF has largest included sphere 1.84 A, density 1.52 g/cm3, surface area 3794.00 m2/g, accessible volume 0.09 cm3/g