Cd2C19N3H8O10 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a distorted pentagonal planar geometry to one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Cd(1)-O(5) bond length is 2.44 Å. The Cd(1)-O(6) bond length is 2.37 Å. The Cd(1)-O(7) bond length is 2.50 Å. The Cd(1)-O(8) bond length is 2.30 Å. The Cd(1)-O(9) bond length is 2.26 Å. In the second Cd site, Cd(2) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(3), and one O(4) atom. The Cd(2)-O(1) bond length is 2.23 Å. The Cd(2)-O(10) bond length is 2.26 Å. The Cd(2)-O(3) bond length is 2.35 Å. The Cd(2)-O(4) bond length is 2.44 Å. There are nineteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.54 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) 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(7) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-C(7) bond length is 1.40 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 1.40 Å. The C(3)-H(2) bond length is 0.93 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(8) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-C(8) bond length is 1.49 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 1.41 Å. The C(5)-H(3) bond length is 0.93 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(9) atom. The C(6)-C(7) bond length is 1.38 Å. The C(6)-C(9) bond length is 1.47 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(2), one C(6), and one H(4) atom. The C(7)-H(4) 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(4), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.27 Å. The C(8)-O(4) bond length is 1.25 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(6), one N(1), and one N(3) atom. The C(9)-N(1) bond length is 1.34 Å. The C(9)-N(3) bond length is 1.31 Å. In the tenth C site, C(10) is bonded in a distorted water-like geometry to one C(11), one N(1), and one N(2) atom. The C(10)-C(11) bond length is 1.45 Å. The C(10)-N(1) bond length is 1.35 Å. The C(10)-N(2) bond length is 1.29 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(16) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-C(16) bond length is 1.41 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(13), and one H(5) atom. The C(12)-C(13) bond length is 1.37 Å. The C(12)-H(5) bond length is 0.93 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(18) atom. The C(13)-C(14) bond length is 1.42 Å. The C(13)-C(18) bond length is 1.51 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(6) atom. The C(14)-C(15) bond length is 1.34 Å. The C(14)-H(6) bond length is 0.93 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(14), one C(16), and one C(17) atom. The C(15)-C(16) bond length is 1.39 Å. The C(15)-C(17) bond length is 1.52 Å. In the sixteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(11), one C(15), and one H(7) atom. The C(16)-H(7) bond length is 0.93 Å. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(5), and one O(6) atom. The C(17)-O(5) bond length is 1.24 Å. The C(17)-O(6) bond length is 1.26 Å. In the eighteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(7), and one O(8) atom. The C(18)-O(7) bond length is 1.25 Å. The C(18)-O(8) bond length is 1.25 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one H(8), one O(10), and one O(9) atom. The C(19)-H(8) bond length is 0.93 Å. The C(19)-O(10) bond length is 1.24 Å. The C(19)-O(9) bond length is 1.27 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a water-like geometry to one C(10) and one C(9) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one C(10), one N(3), and one H(1) atom. The N(2)-N(3) bond length is 1.35 Å. The N(2)-H(1) bond length is 0.86 Å. In the third N site, N(3) is bonded in a distorted water-like geometry to one C(9) and one N(2) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(2) 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(7) 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(14) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(16) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(19) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Cd(2) and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(1) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one Cd(2) and one C(8) atom. In the fourth O site, O(4) is bonded in a distorted L-shaped geometry to one Cd(2) and one C(8) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Cd(1) and one C(17) atom. In the sixth O site, O(6) is bonded in a distorted L-shaped geometry to one Cd(1) and one C(17) atom. In the seventh O site, O(8) is bonded in a distorted L-shaped geometry to one Cd(1) and one C(18) atom. In the eighth O site, O(9) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(19) atom. In the ninth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one C(19) atom. In the tenth O site, O(7) is bonded in a distorted single-bond geometry to one Cd(1) and one C(18) atom. Linkers: 3 [O]C(=O)c1cc([C]2N=C(c3cc(C([O])=O)cc(C([O])=O)c3)[N]N2)cc(C([O])=O)c1 ,1 [O]C(=O)c1cc(C([O])=O)cc(-c2n[nH]c(-c3cc(C([O])=O)cc(C([O])=O)c3)n2)c1. Metal clusters: 4 O=[C]O[Cd]1(O[CH]O[Cd]23(O[C]O2)O[C]O3)O[C]O1. The MOF has largest included sphere 4.30 A, density 1.68 g/cm3, surface area 3735.86 m2/g, accessible volume 0.30 cm3/g