CuH8(C9O2)2 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 1.79 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 1.83 Å. There are thirteen inequivalent C sites. In the first C site, C(6) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(4) atom. Both C(6)-C(2) bond lengths are 1.30 Å. The C(6)-H(4) bond length is 0.93 Å. In the second C site, C(7) is bonded in a 3-coordinate geometry to one C(8) and two equivalent C(3) atoms. The C(7)-C(8) bond length is 1.53 Å. Both C(7)-C(3) bond lengths are 1.11 Å. In the third C site, C(8) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(13) atoms. Both C(8)-C(13) bond lengths are 1.42 Å. In the fourth C site, C(9) is bonded in a trigonal planar geometry to one C(10) and two equivalent C(4) atoms. The C(9)-C(10) bond length is 1.53 Å. Both C(9)-C(4) bond lengths are 1.33 Å. In the fifth C site, C(10) is bonded in a linear geometry to one C(11) and one C(9) atom. The C(10)-C(11) bond length is 1.06 Å. In the sixth C site, C(11) is bonded in a linear geometry to one C(10) and one C(12) atom. The C(11)-C(12) bond length is 1.52 Å. In the seventh C site, C(12) is bonded in a distorted trigonal planar geometry to one C(11) and two equivalent C(5) atoms. Both C(12)-C(5) bond lengths are 1.18 Å. In the eighth C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-O(1) bond length is 1.30 Å. The C(1)-O(2) bond length is 1.31 Å. In the ninth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(6) atom. The C(2)-C(4) bond length is 1.35 Å. In the tenth C site, C(3) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one H(1) atom. The C(3)-C(5) bond length is 1.52 Å. The C(3)-H(1) bond length is 0.93 Å. In the eleventh C site, C(4) is bonded in a distorted single-bond geometry to one C(2), one C(9), and one H(2) atom. The C(4)-H(2) bond length is 0.93 Å. In the twelfth C site, C(5) is bonded in a distorted single-bond geometry to one C(12), one C(3), and one H(3) atom. The C(5)-H(3) bond length is 0.93 Å. In the thirteenth C site, C(13) is bonded in a single-bond geometry to two equivalent C(8) and one H(5) atom. The C(13)-H(5) bond length is 0.94 Å. There are five inequivalent H sites. In the first H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the second H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(4) is bonded in a single-bond geometry to one C(6) 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 single-bond geometry to one Cu(2) and one C(1) atom. Linkers: 8 [O]C(=O)c1cc(C#Cc2ccc(-c3cc(-c4ccc(C#Cc5cc(C([O])=O)cc(C([O])=O)c5)cc4)cc(-c4ccc(C#Cc5cc(C([O])=O)cc(C([O])=O)c5)cc4)c3)cc2)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 22.37 A, density 0.41 g/cm3, surface area 3996.51 m2/g, accessible volume 2.14 cm3/g