CuH4(C3O)4 crystallizes in the cubic Fm-3m space group. There are two inequivalent Cu sites. In the first Cu site, 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 1.95 Å. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(2) atoms. All Cu(2)-O(2) bond lengths are 1.94 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.47 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.28 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(5) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(5) bond length is 1.39 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(1) atom. The C(3)-C(4) bond length is 1.38 Å. The C(3)-H(1) bond length is 0.95 Å. In the fourth C site, C(9) is bonded in a trigonal planar geometry to two equivalent C(8) and one H(3) atom. Both C(9)-C(8) bond lengths are 1.38 Å. The C(9)-H(3) bond length is 0.95 Å. In the fifth C site, C(4) is bonded in a trigonal planar geometry to one C(6) and two equivalent C(3) atoms. The C(4)-C(6) bond length is 1.47 Å. In the sixth C site, C(5) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(2) atom. The C(5)-H(2) bond length is 0.95 Å. In the seventh C site, C(6) is bonded in a linear geometry to one C(4) and one C(7) atom. The C(6)-C(7) bond length is 1.15 Å. In the eighth C site, C(7) is bonded in a linear geometry to one C(6) and one C(8) atom. The C(7)-C(8) bond length is 1.43 Å. In the ninth C site, C(8) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(9) atoms. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(9) atom. In the third H site, H(2) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one C(1) atom. Linkers: 8 [O]C(=O)c1cc(C#Cc2cc(C#Cc3cc(C([O])=O)cc(C([O])=O)c3)cc(C#Cc3cc(C([O])=O)cc(C([O])=O)c3)c2)cc(C([O])=O)c1. Metal clusters: 12 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. The MOF has largest included sphere 19.10 A, density 0.56 g/cm3, surface area 3865.79 m2/g, accessible volume 1.47 cm3/g