Cu2C12N2H6O7 crystallizes in the cubic Pa-3 space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted trigonal bipyramidal geometry to one N(1), one O(1), one O(2), one O(3), and one O(5) atom. The Cu(1)-N(1) bond length is 1.97 Å. The Cu(1)-O(1) bond length is 2.52 Å. The Cu(1)-O(2) bond length is 1.91 Å. The Cu(1)-O(3) bond length is 1.96 Å. The Cu(1)-O(5) bond length is 1.97 Å. In the second Cu site, Cu(2) is bonded in a 5-coordinate geometry to one N(2), one O(1), one O(2), one O(3), and one O(4) atom. The Cu(2)-N(2) bond length is 1.94 Å. The Cu(2)-O(1) bond length is 1.94 Å. The Cu(2)-O(2) bond length is 1.91 Å. The Cu(2)-O(3) bond length is 2.59 Å. The Cu(2)-O(4) bond length is 1.98 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to one C(4), one N(1), and one H(1) atom. The C(1)-C(4) bond length is 1.38 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(4), one N(2), and one H(2) atom. The C(2)-C(4) bond length is 1.37 Å. The C(2)-N(2) bond length is 1.34 Å. The C(2)-H(2) bond length is 0.93 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(9) atom. The C(3)-C(10) bond length is 1.40 Å. The C(3)-C(11) bond length is 1.40 Å. The C(3)-C(9) bond length is 1.51 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(1), one C(2), and one H(3) atom. The C(4)-H(3) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(4), and one O(5) atom. The C(5)-C(8) bond length is 1.51 Å. The C(5)-O(4) bond length is 1.26 Å. The C(5)-O(5) bond length is 1.25 Å. In the sixth C site, C(6) is bonded in a bent 120 degrees geometry to one C(7), one O(1), and one O(7) atom. The C(6)-C(7) bond length is 1.49 Å. The C(6)-O(1) bond length is 1.28 Å. The C(6)-O(7) bond length is 1.22 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(6) atom. The C(7)-C(10) bond length is 1.38 Å. The C(7)-C(12) bond length is 1.39 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(5) atom. The C(8)-C(11) bond length is 1.38 Å. The C(8)-C(12) bond length is 1.39 Å. In the ninth C site, C(9) is bonded in a bent 120 degrees geometry to one C(3), one O(3), and one O(6) atom. The C(9)-O(3) bond length is 1.28 Å. The C(9)-O(6) bond length is 1.24 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(3), one C(7), and one H(4) atom. The C(10)-H(4) bond length is 0.93 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(3), one C(8), and one H(5) atom. The C(11)-H(5) bond length is 0.93 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(7), one C(8), and one H(6) atom. The C(12)-H(6) bond length is 0.93 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 2-coordinate geometry to one Cu(1), one C(1), and one N(2) atom. The N(1)-N(2) bond length is 1.35 Å. In the second N site, N(2) is bonded in a 3-coordinate geometry to one Cu(2), one C(2), and one N(1) atom. There are six 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(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(2), and one C(6) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one Cu(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cu(1), one Cu(2), and one C(9) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one C(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(5) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one C(6) atom. Linkers: 6 [CH]1C=NN=C1 ,6 [O]C(=O)c1cc([C]=O)cc(C([O])=O)c1 ,12 C1=C[N]N=C1 ,6 [CH]1C=CN=N1 ,17 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1 ,1 [O]C(=O)c1cc([C]=O)cc([C]=O)c1. Metal clusters: 4 O=[C]O[Cu@]12=NN=[Cu@](O[C]=O)(O[C]O[Cu@@]3(O[C]=O)=NN=[Cu@@](O[C]=O)(O[C]O[Cu@]4(O[C]=O)=NN=[Cu@](O[C]=O)(O[C]O[Cu@@]5(O[C]=O)=NN=[Cu@@](O[C]=O)(O[C]O[Cu@]6(O[C]=O)=NN=[Cu@](O[C]=O)(O[C]O[Cu@@]7(O[C]=O)=NN=[Cu@@](O[C]=O)(O[C]O1)O7)O6)O5)O4)O3)O2. The MOF has largest included sphere 8.65 A, density 1.14 g/cm3, surface area 3568.06 m2/g, accessible volume 0.59 cm3/g