(CdC3N3H2O2)2(CH2)3 crystallizes in the monoclinic Cc space group. The structure consists of twelve 02329_fluka molecules inside a CdC3N3H2O2 framework. In the CdC3N3H2O2 framework, there are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a pentagonal bipyramidal geometry to one N(2), one N(5), one N(6), one O(1), one O(2), one O(3), and one O(4) atom. The Cd(1)-N(2) bond length is 2.28 Å. The Cd(1)-N(5) bond length is 2.33 Å. The Cd(1)-N(6) bond length is 2.27 Å. The Cd(1)-O(1) bond length is 2.58 Å. The Cd(1)-O(2) bond length is 2.35 Å. The Cd(1)-O(3) bond length is 2.58 Å. The Cd(1)-O(4) bond length is 2.32 Å. In the second Cd site, Cd(2) is bonded in a rectangular see-saw-like geometry to one N(1), one N(3), one N(4), and one O(1) atom. The Cd(2)-N(1) bond length is 2.36 Å. The Cd(2)-N(3) bond length is 2.24 Å. The Cd(2)-N(4) bond length is 2.24 Å. The Cd(2)-O(1) bond length is 2.45 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(2); one N(3); and one H(1,2) atom. The C(1)-N(2) bond length is 1.31 Å. The C(1)-N(3) bond length is 1.35 Å. The C(1)-H(1,2) bond length is 0.93 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(1); one N(3); and one H(1,2) atom. The C(2)-N(1) bond length is 1.32 Å. The C(2)-N(3) bond length is 1.33 Å. The C(2)-H(1,2) bond length is 0.93 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one N(5), one N(6), and one H(3) atom. The C(3)-N(5) bond length is 1.31 Å. The C(3)-N(6) bond length is 1.33 Å. The C(3)-H(3) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one N(4), one N(6), and one H(4) atom. The C(4)-N(4) bond length is 1.31 Å. The C(4)-N(6) bond length is 1.34 Å. The C(4)-H(4) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(5)-O(1) bond length is 1.26 Å. The C(5)-O(2) bond length is 1.25 Å. In the sixth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(9)-O(3) bond length is 1.25 Å. The C(9)-O(4) bond length is 1.25 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.38 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one N(1) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(1), and one C(2) atom. In the fourth N site, N(4) is bonded in a 3-coordinate geometry to one Cd(2), one C(4), and one N(5) atom. The N(4)-N(5) bond length is 1.37 Å. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(3), and one N(4) atom. In the sixth N site, N(6) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(3), and one C(4) atom. There are three inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cd(1), one Cd(2), and one C(5) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Cd(1) and one C(5) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Cd(1) and one C(9) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one Cd(1) and one C(9) atom. Linkers: 2 [O]C(=O)CCCC([O])=O ,3 [N]1=CN=NC=1 ,1 C1=NN=C[N]1. Metal clusters: 2 O=[C]O[Cd]12N=N[Cd](N=N1)O[C]O2. The MOF has largest included sphere 4.49 A, density 1.64 g/cm3, surface area 3309.31 m2/g, accessible volume 0.29 cm3/g