CdC15N3H12O7 crystallizes in the triclinic P-1 space group. Cd(1) is bonded in a 6-coordinate geometry to one N(1), one O(1), one O(2), one O(3), one O(4), and one O(7) atom. The Cd(1)-N(1) bond length is 2.27 Å. The Cd(1)-O(1) bond length is 2.26 Å. The Cd(1)-O(2) bond length is 2.40 Å. The Cd(1)-O(3) bond length is 2.38 Å. The Cd(1)-O(4) bond length is 2.33 Å. The Cd(1)-O(7) bond length is 2.62 Å. There are fifteen inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(5), one O(4), and one O(7) atom. The C(1)-C(5) bond length is 1.50 Å. The C(1)-O(4) bond length is 1.27 Å. The C(1)-O(7) bond length is 1.28 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(3) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-O(1) bond length is 1.28 Å. The C(2)-O(3) bond length is 1.27 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(8) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(3) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(3) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(6) atom. The C(5)-C(6) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5), one C(7), and one H(4) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-H(4) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(6), one C(8), and one N(3) atom. The C(7)-C(8) bond length is 1.39 Å. The C(7)-N(3) bond length is 1.47 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(3), one C(7), and one H(5) atom. The C(8)-H(5) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(6) atom. The C(9)-N(1) bond length is 1.33 Å. The C(9)-N(2) bond length is 1.36 Å. The C(9)-H(6) bond length is 1.08 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(11), one N(1), and one H(7) atom. The C(10)-C(11) bond length is 1.37 Å. The C(10)-N(1) bond length is 1.38 Å. The C(10)-H(7) bond length is 1.08 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(10), one N(2), and one H(8) atom. The C(11)-N(2) bond length is 1.39 Å. The C(11)-H(8) bond length is 1.08 Å. In the twelfth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(13), one C(15), and one N(2) atom. The C(12)-C(13) bond length is 1.41 Å. The C(12)-C(15) bond length is 1.40 Å. The C(12)-N(2) bond length is 1.43 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(15) atom. The C(13)-C(14) bond length is 1.50 Å. The C(13)-C(15) bond length is 1.40 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal non-coplanar geometry to one C(13), one H(10), one H(11), and one H(9) atom. The C(14)-H(10) bond length is 1.10 Å. The C(14)-H(11) bond length is 1.10 Å. The C(14)-H(9) bond length is 1.10 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(12), one C(13), and one H(12) atom. The C(15)-H(12) bond length is 1.09 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cd(1), one C(10), and one C(9) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(9) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(7), one O(5), and one O(6) atom. The N(3)-O(5) bond length is 1.25 Å. The N(3)-O(6) bond length is 1.24 Å. There are twelve inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(2) and one O(7) atom. The H(1)-O(2) bond length is 1.01 Å. The H(1)-O(7) bond length is 1.61 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. The H(2)-O(2) bond length is 0.97 Å. 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(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(10) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(11) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(14) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(14) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(14) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(15) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Cd(1) and one C(2) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Cd(1), one H(1), and one H(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one Cd(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one N(3) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one N(3) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Cd(1), one C(1), and one H(1) atom. Linkers: 1 Cc1cc(-n2ccnc2)c(C)cc1-n1ccnc1 ,2 [O]C(=O)c1cc(C([O])=O)cc([N+](=O)[O-])c1. Metal clusters: 1 O.O.O=[C]O[Cd]1O[C]O[Cd](O[C]=O)O[C]O1. The MOF has largest included sphere 2.48 A, density 1.87 g/cm3, surface area 3759.64 m2/g, accessible volume 0.16 cm3/g