Eu2Cd3H48(C6O5)6 crystallizes in the hexagonal P6/mcc space group. Eu(1) is bonded in a 9-coordinate geometry to three equivalent O(3) and six equivalent O(2) atoms. All Eu(1)-O(3) bond lengths are 2.50 Å. All Eu(1)-O(2) bond lengths are 2.42 Å. Cd(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Cd(1)-O(1) bond lengths are 2.25 Å. There are three inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.24 Å. In the second C site, C(2) is bonded in a 4-coordinate geometry to one C(3), one H(1), one H(2), and one O(3) atom. The C(2)-C(3) bond length is 1.12 Å. The C(2)-H(1) bond length is 0.97 Å. The C(2)-H(2) bond length is 0.97 Å. The C(2)-O(3) bond length is 1.47 Å. In the third C site, C(3) is bonded in a 2-coordinate geometry to one C(2), one H(3), one H(4), and one O(3) atom. The C(3)-H(3) bond length is 0.96 Å. The C(3)-H(4) bond length is 0.97 Å. The C(3)-O(3) bond length is 1.50 Å. There are four 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 distorted water-like geometry to one C(2) and one H(3) atom. The H(2)-H(3) bond length is 0.48 Å. In the third H site, H(3) is bonded in a distorted water-like geometry to one C(3) and one H(2) atom. In the fourth H site, H(4) is bonded in a distorted single-bond geometry to one C(3) atom. There are three inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to one Eu(1), two equivalent C(2), and two equivalent C(3) atoms. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(1) atom. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Eu(1) and one C(1) atom. Linkers: 4 [CH2][CH2].[O]CCC([O])=O.[O][C]=O ,8 [CH2][CH2].[CH2][CH2].[O].[O][C]=O.[O][C]=O. Metal clusters: 4 [Eu] ,6 [Cd]. The MOF has largest included sphere 7.07 A, density 2.13 g/cm3, surface area 2408.42 m2/g, accessible volume 0.19 cm3/g