CuH23(C13O2)2 crystallizes in the trigonal R-3 space group. Cu(1) is bonded in a distorted square co-planar geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Cu(1)-O(1) bond length is 1.95 Å. The Cu(1)-O(2) bond length is 1.97 Å. The Cu(1)-O(3) bond length is 1.96 Å. The Cu(1)-O(4) bond length is 1.98 Å. There are twenty-six inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(2), and one O(3) atom. The C(1)-C(2) bond length is 1.42 Å. The C(1)-O(2) bond length is 1.30 Å. The C(1)-O(3) bond length is 1.24 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(4) atom. The C(2)-C(3) bond length is 1.36 Å. The C(2)-C(4) bond length is 1.37 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(5), and one H(1) atom. The C(3)-C(5) bond length is 1.44 Å. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(2), one C(6), and one H(2) atom. The C(4)-C(6) bond length is 1.38 Å. The C(4)-H(2) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(3), one C(7), and one C(8) atom. The C(5)-C(7) bond length is 1.41 Å. The C(5)-C(8) bond length is 1.41 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(4), one C(7), and one C(9) atom. The C(6)-C(7) bond length is 1.36 Å. The C(6)-C(9) bond length is 1.54 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(5), one C(6), and one H(3) atom. The C(7)-H(3) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(1), and one O(4) atom. The C(8)-O(1) bond length is 1.24 Å. The C(8)-O(4) bond length is 1.30 Å. In the ninth C site, C(9) is bonded in a 5-coordinate geometry to one C(10), one C(11), one C(21), one C(24), and one C(6) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-C(11) bond length is 1.40 Å. The C(9)-C(21) bond length is 1.39 Å. The C(9)-C(24) bond length is 1.39 Å. In the tenth C site, C(10) is bonded in a 4-coordinate geometry to one C(12), one C(13), one C(24), and one C(9) atom. The C(10)-C(12) bond length is 1.50 Å. The C(10)-C(13) bond length is 1.40 Å. The C(10)-C(24) bond length is 1.37 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(14), one C(9), and one H(4) atom. The C(11)-C(14) bond length is 1.40 Å. The C(11)-H(4) bond length is 0.93 Å. In the twelfth C site, C(12) is bonded in a trigonal non-coplanar geometry to one C(10), one H(5), one H(6), and one H(7) atom. The C(12)-H(5) bond length is 0.96 Å. The C(12)-H(6) bond length is 0.96 Å. The C(12)-H(7) bond length is 0.96 Å. In the thirteenth C site, C(13) is bonded in a single-bond geometry to one C(10), one C(15), and one H(8) atom. The C(13)-C(15) bond length is 1.39 Å. The C(13)-H(8) bond length is 0.93 Å. In the fourteenth C site, C(14) is bonded in a 4-coordinate geometry to one C(11), one C(15), one C(16), and one C(22) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-C(16) bond length is 1.50 Å. The C(14)-C(22) bond length is 1.39 Å. In the fifteenth C site, C(15) is bonded in a 5-coordinate geometry to one C(13), one C(14), one C(17), one C(22), and one C(23) atom. The C(15)-C(17) bond length is 1.55 Å. The C(15)-C(22) bond length is 1.39 Å. The C(15)-C(23) bond length is 1.39 Å. In the sixteenth C site, C(16) is bonded in a trigonal non-coplanar geometry to one C(14), one H(10), one H(11), and one H(9) atom. The C(16)-H(10) bond length is 0.96 Å. The C(16)-H(11) bond length is 0.95 Å. The C(16)-H(9) bond length is 0.96 Å. In the seventeenth C site, C(17) is bonded in a trigonal planar geometry to one C(15), one C(18), and one C(19) atom. The C(17)-C(18) bond length is 1.42 Å. The C(17)-C(19) bond length is 1.47 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(17), one C(19), and one H(12) atom. The C(18)-C(19) bond length is 1.47 Å. The C(18)-H(12) bond length is 0.93 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one C(17), one C(18), and one C(20) atom. The C(19)-C(20) bond length is 1.50 Å. In the twentieth C site, C(20) is bonded in a trigonal non-coplanar geometry to one C(19), one H(13), one H(14), and one H(15) atom. The C(20)-H(13) bond length is 0.96 Å. The C(20)-H(14) bond length is 0.96 Å. The C(20)-H(15) bond length is 0.96 Å. In the twenty-first C site, C(21) is bonded in a distorted single-bond geometry to one C(22); one C(9); and one H(16,17) atom. The C(21)-C(22) bond length is 1.40 Å. The C(21)-H(16,17) bond length is 0.93 Å. In the twenty-second C site, C(22) is bonded in a 4-coordinate geometry to one C(14), one C(15), one C(21), and one C(26) atom. The C(22)-C(26) bond length is 1.50 Å. In the twenty-third C site, C(23) is bonded in a distorted single-bond geometry to one C(15); one C(24); and one H(16,17) atom. The C(23)-C(24) bond length is 1.40 Å. The C(23)-H(16,17) bond length is 0.93 Å. In the twenty-fourth C site, C(24) is bonded in a 4-coordinate geometry to one C(10), one C(23), one C(25), and one C(9) atom. The C(24)-C(25) bond length is 1.50 Å. In the twenty-fifth C site, C(25) is bonded in a trigonal non-coplanar geometry to one C(24), one H(18), one H(19), and one H(20) atom. The C(25)-H(18) bond length is 0.96 Å. The C(25)-H(19) bond length is 0.96 Å. The C(25)-H(20) bond length is 0.96 Å. In the twenty-sixth C site, C(26) is bonded in a trigonal non-coplanar geometry to one C(22), one H(21), one H(22), and one H(23) atom. The C(26)-H(21) bond length is 0.96 Å. The C(26)-H(22) bond length is 0.96 Å. The C(26)-H(23) bond length is 0.96 Å. There are twenty-two 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(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) 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(12) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(12) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(13) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(16) atom. In the tenth H site, H(10) is bonded in a distorted single-bond geometry to one C(16) and one H(12) atom. The H(10)-H(12) bond length is 0.81 Å. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(16) atom. In the twelfth H site, H(12) is bonded in a bent 120 degrees geometry to one C(18) and one H(10) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(20) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(20) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(20) atom. In the sixteenth H site, H(16,17) is bonded in a single-bond geometry to one C(21) atom. In the seventeenth H site, H(18) is bonded in a single-bond geometry to one C(25) atom. In the eighteenth H site, H(19) is bonded in a single-bond geometry to one C(25) atom. In the nineteenth H site, H(20) is bonded in a single-bond geometry to one C(25) atom. In the twentieth H site, H(21) is bonded in a single-bond geometry to one C(26) atom. In the twenty-first H site, H(22) is bonded in a single-bond geometry to one C(26) atom. In the twenty-second H site, H(23) is bonded in a single-bond geometry to one C(26) 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(8) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cu(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cu(1) and one C(8) atom. Linkers: 9 C[C@]12[C@@H]3[C@@H]4[C@@]1(C)[C@]21[C@@H]2[C@H]1[C@@]1(C)[C@]2(C)[C@]431.C[C@]12[C@@H]3[C@@H]4[C@@]1(C)[C@]21[C@@H]2[C@H]1[C@@]1(C)[C@]2(C)[C@]431.[CH]=[C][C]C.[CH]=[C][C]C.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1. Metal clusters: 9 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. RCSR code: nbo. The MOF has largest included sphere 11.64 A, density 0.73 g/cm3, surface area 4256.71 m2/g, accessible volume 0.88 cm3/g