Cu3(C8O3)4 crystallizes in the cubic Fm-3m space group. Cu(1) is bonded in a square pyramidal geometry to one Cu(1) and four equivalent O(1) atoms. The Cu(1)-Cu(1) bond length is 2.49 Å. All Cu(1)-O(1) bond lengths are 1.88 Å. There are five inequivalent C sites. In the first C site, C(3) is bonded in a trigonal planar geometry to one C(2) and two equivalent C(1) atoms. The C(3)-C(2) bond length is 1.50 Å. Both C(3)-C(1) bond lengths are 1.43 Å. In the second C site, C(2) is bonded in a distorted water-like geometry to one C(3) and two equivalent O(1) atoms. Both C(2)-O(1) bond lengths are 1.30 Å. In the third C site, C(5) is bonded in a trigonal planar geometry to three equivalent C(4) atoms. All C(5)-C(4) bond lengths are 1.40 Å. In the fourth C site, C(1) is bonded in a bent 120 degrees geometry to one C(3) and one C(4) atom. The C(1)-C(4) bond length is 1.39 Å. In the fifth C site, C(4) is bonded in a trigonal planar geometry to one C(5) and two equivalent C(1) atoms. O(1) is bonded in a single-bond geometry to one Cu(1) and one C(2) atom. Linkers: 17 [O]C(=O)C1=[C]c2[c]c(C([O])=O)[c]c3[c]c(C([O])=O)[c]c(c23)[C]1 ,15 [O]C(=O)C1=[C]C2=[C]C(C([O])=O)=[C]C3=[C]C(C([O])=O)=[C]C(=[C]1)[C]23. Metal clusters: 24 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. RCSR code: tbo. The MOF has largest included sphere 18.48 A, density 0.54 g/cm3, surface area 3547.21 m2/g, accessible volume 1.53 cm3/g