Ce3(C3O4)4 crystallizes in the cubic Pn-3 space group. Ce(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and three equivalent O(1) atoms. The Ce(1)-O(2) bond length is 2.43 Å. The Ce(1)-O(3) bond length is 2.39 Å. The Ce(1)-O(4) bond length is 2.41 Å. The Ce(1)-O(5) bond length is 2.42 Å. The Ce(1)-O(6) bond length is 2.44 Å. There are a spread of Ce(1)-O(1) bond distances ranging from 2.14-2.48 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(2), and one O(3) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-O(2) bond length is 1.29 Å. The C(1)-O(3) bond length is 1.32 Å. In the second C site, C(2) is bonded in a bent 120 degrees geometry to one C(1) and one C(2) atom. The C(2)-C(2) bond length is 1.37 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(4), one O(4), and one O(5) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-O(4) bond length is 1.35 Å. The C(3)-O(5) bond length is 1.28 Å. In the fourth C site, C(4) is bonded in a bent 120 degrees geometry to one C(3) and one C(4) atom. The C(4)-C(4) bond length is 1.38 Å. There are six inequivalent O sites. In the first O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Ce(1) and one C(1) atom. In the second O site, O(3) is bonded in a bent 150 degrees geometry to one Ce(1) and one C(1) atom. In the third O site, O(4) is bonded in a bent 120 degrees geometry to one Ce(1) and one C(3) atom. In the fourth O site, O(5) is bonded in a bent 150 degrees geometry to one Ce(1) and one C(3) atom. In the fifth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Ce(1) atoms. In the sixth O site, O(1) is bonded in a trigonal non-coplanar geometry to three equivalent Ce(1) atoms. Linkers: 15 [O]C(=O)[C][C]C([O])=O ,12 [O]C(=O)/[C]=[C]/C([O])=O. Metal clusters: 4 [C]1O[Ce]2345O[C]O[Ce]678(O[C]O[Ce]9%10(O[C]O[Ce]%11%12(O[C]O[Ce]%13(O[C]O[Ce](O1)(O[C]O6)(O[C]O%11)(O2)O%13)(O[C]O3)(O[C]O9)O%12)(O[C]O7)O%10)(O[C]O4)O8)O5.[O].[O]. RCSR code: fcu. The MOF has largest included sphere 8.01 A, density 1.70 g/cm3, surface area 2081.59 m2/g, accessible volume 0.29 cm3/g