CuH2(C3O2)2 crystallizes in the cubic Fm-3m space group. Cu(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. All Cu(1)-O(1) bond lengths are 1.97 Å. There are three inequivalent C sites. In the first C site, C(3) is bonded in a distorted single-bond geometry to two equivalent C(1) and one H(1) atom. Both C(3)-C(1) bond lengths are 1.40 Å. The C(3)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a bent 120 degrees geometry to one C(1) and two equivalent O(1) atoms. The C(2)-C(1) bond length is 1.50 Å. Both C(2)-O(1) bond lengths are 1.28 Å. In the third C site, C(1) is bonded in a trigonal planar geometry to one C(2) and two equivalent C(3) atoms. H(1) is bonded in a single-bond geometry to one C(3) atom. O(1) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(2) atom. Linkers: 8 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 6 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. RCSR code: tbo. The MOF has largest included sphere 13.45 A, density 0.87 g/cm3, surface area 3187.69 m2/g, accessible volume 0.81 cm3/g