CdC13NH9O5 crystallizes in the monoclinic C2/c 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(5) atom. The Cd(1)-N(1) bond length is 2.31 Å. The Cd(1)-O(1) bond length is 2.49 Å. The Cd(1)-O(2) bond length is 2.55 Å. The Cd(1)-O(3) bond length is 2.34 Å. The Cd(1)-O(4) bond length is 2.26 Å. The Cd(1)-O(5) bond length is 2.43 Å. There are thirteen inequivalent C sites. In the first C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(4) atom. The C(13)-C(1) bond length is 1.50 Å. The C(13)-O(1) bond length is 1.28 Å. The C(13)-O(4) bond length is 1.28 Å. In the second C site, C(1) is bonded in a trigonal planar geometry to one C(13), one C(2), and one C(3) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(3) bond length is 1.39 Å. In the third C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(4), and one H(1) atom. The C(2)-C(4) bond length is 1.41 Å. The C(2)-H(1) bond length is 1.09 Å. In the fourth C site, C(3) is bonded in a distorted single-bond geometry to one C(1), one C(7), and one H(2) atom. The C(3)-C(7) bond length is 1.39 Å. The C(3)-H(2) bond length is 1.08 Å. In the fifth C site, C(4) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(6) atom. The C(4)-C(4) bond length is 1.48 Å. The C(4)-C(6) bond length is 1.41 Å. In the sixth C site, C(5) is bonded in a trigonal planar geometry to one C(12), one C(5), and one C(8) atom. The C(5)-C(12) bond length is 1.40 Å. The C(5)-C(5) bond length is 1.48 Å. The C(5)-C(8) bond length is 1.40 Å. In the seventh C site, C(6) is bonded in a distorted single-bond geometry to one C(4), one C(7), and one H(3) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-H(3) bond length is 1.09 Å. In the eighth C site, C(7) is bonded in a trigonal planar geometry to one C(10), one C(3), and one C(6) atom. The C(7)-C(10) bond length is 1.50 Å. In the ninth C site, C(8) is bonded in a distorted single-bond geometry to one C(5), one C(9), and one H(4) atom. The C(8)-C(9) bond length is 1.39 Å. The C(8)-H(4) bond length is 1.09 Å. In the tenth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(8), one N(1), and one H(5) atom. The C(9)-N(1) bond length is 1.35 Å. The C(9)-H(5) bond length is 1.09 Å. In the eleventh C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(2), and one O(3) atom. The C(10)-O(2) bond length is 1.28 Å. The C(10)-O(3) bond length is 1.27 Å. In the twelfth C site, C(11) is bonded in a distorted trigonal planar geometry to one C(12), one N(1), and one H(6) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-N(1) bond length is 1.35 Å. The C(11)-H(6) bond length is 1.09 Å. In the thirteenth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(5), and one H(9) atom. The C(12)-H(9) bond length is 1.09 Å. N(1) is bonded in a trigonal planar geometry to one Cd(1), one C(11), and one C(9) atom. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(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(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(5) atom. The H(7)-O(5) bond length is 1.00 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(5) atom. The H(8)-O(5) bond length is 0.97 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(12) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cd(1) and one C(13) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cd(1) and one C(10) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one Cd(1) and one C(10) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Cd(1) and one C(13) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Cd(1), one H(7), and one H(8) atom. Linkers: 2 [O]C(=O)c1cc(C([O])=O)cc(-c2cc(C([O])=O)cc(C([O])=O)c2)c1 ,2 c1cc(-c2ccncc2)ccn1. Metal clusters: 2 O.O.[C]1O[Cd]2(O1)O[C]O[Cd]1(O[C]O1)O[C]O2. RCSR code: pts. The MOF has largest included sphere 4.27 A, density 1.78 g/cm3, surface area 3460.14 m2/g, accessible volume 0.22 cm3/g