CuH11(C4O)4 crystallizes in the tetragonal P4_2/mnm 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 two equivalent O(1) and two equivalent O(3) atoms. Both Cu(1)-O(1) bond lengths are 1.94 Å. Both Cu(1)-O(3) bond lengths are 1.95 Å. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(4) atoms. Both Cu(2)-O(2) bond lengths are 1.97 Å. Both Cu(2)-O(4) bond lengths are 1.96 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one H(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.39 Å. The C(1)-H(1) bond length is 0.95 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(7) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(7) bond length is 1.49 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(2) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(2) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(9) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-C(9) bond length is 1.51 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(3) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(3) bond length is 0.95 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(1), one C(5), and one C(8) atom. The C(6)-C(8) bond length is 1.48 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.25 Å. The C(7)-O(2) bond length is 1.28 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.28 Å. The C(8)-O(4) bond length is 1.26 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(4) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-C(14) bond length is 1.39 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(15), and one C(9) atom. The C(10)-C(11) bond length is 1.39 Å. The C(10)-C(15) bond length is 1.59 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(10), one C(12), and one H(4) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-H(4) bond length is 0.95 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(13) atom. The C(12)-C(12) bond length is 1.54 Å. The C(12)-C(13) bond length is 1.39 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(12), one C(14), and one H(5) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-H(5) bond length is 0.95 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(13), one C(16), and one C(9) atom. The C(14)-C(16) bond length is 1.52 Å. In the fifteenth C site, C(15) is bonded in a trigonal non-coplanar geometry to one C(10) and three equivalent H(6,7,8) atoms. All C(15)-H(6,7,8) bond lengths are 0.98 Å. In the sixteenth C site, C(16) is bonded in a trigonal non-coplanar geometry to one C(14); one H(9); and two equivalent H(10,11) atoms. The C(16)-H(9) bond length is 0.98 Å. Both C(16)-H(10,11) bond lengths are 0.98 Å. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(11) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the sixth H site, H(6,7,8) is bonded in a single-bond geometry to one C(15) atom. In the seventh H site, H(9) is bonded in a single-bond geometry to one C(16) atom. In the eighth H site, H(10,11) is bonded in a single-bond geometry to one C(16) atom. There are four 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(7) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cu(2) and one C(7) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cu(1) and one C(8) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cu(2) and one C(8) atom. Linkers: 8 Cc1cc(-c2cc(C)c(-c3cc(C([O])=O)cc(C([O])=O)c3)c(C)c2)cc(C)c1-c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 8 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. RCSR code: ssb. The MOF has largest included sphere 14.37 A, density 0.69 g/cm3, surface area 4337.58 m2/g, accessible volume 0.95 cm3/g