Cd2C6N9H6I crystallizes in the orthorhombic Pnma space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a tetrahedral geometry to one N(6), two equivalent N(1), and one I(1) atom. The Cd(1)-N(6) bond length is 2.22 Å. Both Cd(1)-N(1) bond lengths are 2.24 Å. The Cd(1)-I(1) bond length is 2.78 Å. In the second Cd site, Cd(2) is bonded in an octahedral geometry to one N(4), one N(5), two equivalent N(2), and two equivalent N(3) atoms. The Cd(2)-N(4) bond length is 2.33 Å. The Cd(2)-N(5) bond length is 2.44 Å. Both Cd(2)-N(2) bond lengths are 2.35 Å. Both Cd(2)-N(3) bond lengths are 2.38 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(1) atom. The C(1)-N(1) bond length is 1.36 Å. The C(1)-N(2) bond length is 1.33 Å. The C(1)-H(1) bond length is 1.09 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(2) atom. The C(2)-N(1) bond length is 1.36 Å. The C(2)-N(3) bond length is 1.33 Å. The C(2)-H(2) bond length is 1.09 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one N(4), one N(6), and one H(3) atom. The C(3)-N(4) bond length is 1.33 Å. The C(3)-N(6) bond length is 1.36 Å. The C(3)-H(3) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one N(5), one N(6), and one H(4) atom. The C(4)-N(5) bond length is 1.33 Å. The C(4)-N(6) bond length is 1.36 Å. The C(4)-H(4) bond length is 1.09 Å. There are six inequivalent N sites. In the first N site, N(2) is bonded in a 3-coordinate geometry to one Cd(2), one C(1), and one N(3) atom. The N(2)-N(3) bond length is 1.37 Å. In the second N site, N(3) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(2), and one N(2) atom. In the third N site, N(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one C(2) atom. In the fourth N site, N(6) is bonded in a trigonal planar geometry to one Cd(1), one C(3), and one C(4) atom. In the fifth N site, N(4) is bonded in a 3-coordinate geometry to one Cd(2), one C(3), and one N(5) atom. The N(4)-N(5) bond length is 1.37 Å. In the sixth N site, N(5) is bonded in a 3-coordinate geometry to one Cd(2), one C(4), and one N(4) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. I(1) is bonded in a single-bond geometry to one Cd(1) atom. Linkers: 4 I[Cd](n1cnnc1)(n1cnnc1)n1cnnc1. Metal clusters: 4 [Cd]. The MOF has largest included sphere 3.01 A, density 2.39 g/cm3, surface area 2816.66 m2/g, accessible volume 0.16 cm3/g