Cd2C16N5H11O7 crystallizes in the monoclinic C2/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 7-coordinate geometry to one N(1), one N(2), one O(1), one O(2), one O(3), one O(4), and one O(5) atom. The Cd(1)-N(1) bond length is 2.43 Å. The Cd(1)-N(2) bond length is 2.41 Å. The Cd(1)-O(1) bond length is 2.34 Å. The Cd(1)-O(2) bond length is 2.47 Å. The Cd(1)-O(3) bond length is 2.33 Å. The Cd(1)-O(4) bond length is 2.73 Å. The Cd(1)-O(5) bond length is 2.30 Å. In the second Cd site, Cd(2) is bonded to one N(3), one N(4), one O(4), one O(6), and two equivalent O(1) atoms to form edge-sharing CdN2O4 octahedra. The Cd(2)-N(3) bond length is 2.40 Å. The Cd(2)-N(4) bond length is 2.38 Å. The Cd(2)-O(4) bond length is 2.30 Å. The Cd(2)-O(6) bond length is 2.41 Å. There is one shorter (2.24 Å) and one longer (2.36 Å) Cd(2)-O(1) bond length. There are sixteen inequivalent C sites. In the first C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(3) atom. The C(7)-C(2) bond length is 1.50 Å. The C(7)-O(2) bond length is 1.27 Å. The C(7)-O(3) bond length is 1.28 Å. In the second C site, C(8) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(6) atom. The C(8)-C(4) bond length is 1.39 Å. The C(8)-C(5) bond length is 1.50 Å. The C(8)-C(6) bond length is 1.40 Å. In the third C site, C(9) is bonded in a distorted trigonal planar geometry to one C(3), one C(4), and one N(5) atom. The C(9)-C(3) bond length is 1.40 Å. The C(9)-C(4) bond length is 1.40 Å. The C(9)-N(5) bond length is 1.41 Å. In the fourth C site, C(10) is bonded in a trigonal planar geometry to one C(1), one C(13), and one C(14) atom. The C(10)-C(1) bond length is 1.47 Å. The C(10)-C(13) bond length is 1.40 Å. The C(10)-C(14) bond length is 1.40 Å. In the fifth C site, C(11) is bonded in a trigonal planar geometry to one C(12), one C(15), and one C(16) atom. The C(11)-C(12) bond length is 1.40 Å. The C(11)-C(15) bond length is 1.49 Å. The C(11)-C(16) bond length is 1.40 Å. In the sixth C site, C(12) is bonded in a distorted single-bond geometry to one C(11) and one H(7) atom. The C(12)-H(7) bond length is 1.09 Å. In the seventh C site, C(13) is bonded in a distorted single-bond geometry to one C(10) and one H(8) atom. The C(13)-H(8) bond length is 1.09 Å. In the eighth C site, C(14) is bonded in a distorted single-bond geometry to one C(10) and one H(9) atom. The C(14)-H(9) bond length is 1.09 Å. In the ninth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(11), one N(5), and one O(7) atom. The C(15)-N(5) bond length is 1.37 Å. The C(15)-O(7) bond length is 1.25 Å. In the tenth C site, C(16) is bonded in a distorted single-bond geometry to one C(11) and one H(10) atom. The C(16)-H(10) bond length is 1.09 Å. In the eleventh C site, C(1) is bonded in a distorted trigonal planar geometry to one C(10), one N(1), and one N(2) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(2) bond length is 1.34 Å. In the twelfth C site, C(2) is bonded in a trigonal planar geometry to one C(3), one C(6), and one C(7) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(6) bond length is 1.40 Å. In the thirteenth C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(9), and one H(4) atom. The C(3)-H(4) bond length is 1.09 Å. In the fourteenth C site, C(4) is bonded in a distorted single-bond geometry to one C(8), one C(9), and one H(5) atom. The C(4)-H(5) bond length is 1.08 Å. In the fifteenth 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)-O(4) bond length is 1.28 Å. The C(5)-O(5) bond length is 1.27 Å. In the sixteenth C site, C(6) is bonded in a distorted single-bond geometry to one C(2), one C(8), and one H(6) atom. The C(6)-H(6) bond length is 1.09 Å. There are five inequivalent N sites. In the first N site, N(5) is bonded in a trigonal planar geometry to one C(15), one C(9), and one H(3) atom. The N(5)-H(3) bond length is 1.01 Å. In the second N site, N(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one N(3) atom. The N(1)-N(3) bond length is 1.34 Å. In the third N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one N(4) atom. The N(2)-N(4) bond length is 1.34 Å. In the fourth N site, N(3) is bonded in a trigonal planar geometry to one Cd(2), one N(1), and one N(4) atom. The N(3)-N(4) bond length is 1.32 Å. In the fifth N site, N(4) is bonded in a distorted trigonal planar geometry to one Cd(2), one N(2), and one N(3) atom. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(6) atom. The H(1)-O(6) bond length is 0.97 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. The H(2)-O(6) bond length is 1.00 Å. In the third H site, H(3) is bonded in a single-bond geometry to one N(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(4) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(6) 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(14) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(16) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one O(1) atom. The H(11)-O(1) bond length is 0.97 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cd(1), two equivalent Cd(2), and one H(11) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cd(1) and one C(7) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one Cd(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Cd(1), one Cd(2), and one C(5) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cd(1) and one C(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Cd(2), one H(1), and one H(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one C(15) atom. Linkers: 4 [O]C(=O)c1cc(NC(=O)c2ccc(C3=NN=N[N]3)cc2)cc(C([O])=O)c1. Metal clusters: 8 [Cd]. The MOF has largest included sphere 4.77 A, density 1.69 g/cm3, surface area 3397.97 m2/g, accessible volume 0.22 cm3/g