TbH8(C2O)8(C7H4)4 is Indium-derived structured and crystallizes in the cubic I432 space group. The structure is zero-dimensional and consists of eight 1,3,5-tris[3,5-bis(prop-1-en-2-yl)phenyl]benzene molecules and twelve TbH8(C2O)8 clusters. In each TbH8(C2O)8 cluster, Tb(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Tb(1)-O(1) bond lengths are 2.37 Å. All Tb(1)-O(2) bond lengths are 2.36 Å. There are four inequivalent C sites. In the first C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(3,4) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(3,4) bond length is 0.93 Å. In the second C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(9) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-C(9) bond length is 1.59 Å. In the third C site, C(7) is bonded in a distorted single-bond geometry to one C(6) and one H(3,4) atom. The C(7)-H(3,4) bond length is 0.93 Å. In the fourth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(9)-O(1) bond length is 1.43 Å. The C(9)-O(2) bond length is 1.16 Å. H(3,4) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Tb(1) and one C(9) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Tb(1) and one C(9) atom. Linkers: 8 [O]C(=O)c1ccc(-c2cc(-c3ccc(C([O])=O)cc3)cc(-c3cc(-c4cc(-c5ccc(C([O])=O)cc5)cc(-c5ccc(C([O])=O)cc5)c4)cc(-c4cc(-c5ccc(C([O])=O)cc5)cc(-c5ccc(C([O])=O)cc5)c4)c3)c2)cc1. Metal clusters: 12 [O][C]O[Tb]12(O[C][O])(O[C]O1)O[C]O2. RCSR code: soc. The MOF has largest included sphere 20.34 A, density 0.47 g/cm3, surface area 4338.36 m2/g, accessible volume 1.78 cm3/g