CdH8(CO)8 is Indium-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four CdH8(CO)8 clusters. Cd(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Both Cd(1)-O(1) bond lengths are 2.56 Å. Both Cd(1)-O(2) bond lengths are 2.30 Å. Both Cd(1)-O(4) bond lengths are 2.23 Å. There are four 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 1.48 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.30 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(4) atom. The C(2)-C(3) bond length is 1.42 Å. The C(2)-C(4) 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) and one O(3) atom. The C(3)-O(3) bond length is 1.36 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(2) and one H(4) atom. The C(4)-H(4) bond length is 1.09 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a bent 150 degrees geometry to one O(2) and one O(3) atom. The H(1)-O(2) bond length is 1.54 Å. The H(1)-O(3) bond length is 1.02 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) atom. The H(2)-O(4) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(4) atom. The H(3)-O(4) bond length is 0.99 Å. In the fourth 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) and one C(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cd(1), one C(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one C(3) and one H(1) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one Cd(1), one H(2), and one H(3) atom. Linkers: 2 [O]C(=O)c1cc(O)c(C([O])=O)cc1O. Metal clusters: 2 O.O.O=[C]O[Cd]O[C]=O. The MOF has largest included sphere 1.91 A, density 2.33 g/cm3, surface area 3305.93 m2/g, accessible volume 0.08 cm3/g