Ce3(CO3)4(C3N2)2 is Indium-derived structured and crystallizes in the cubic Fm-3m space group. The structure is zero-dimensional and consists of ninety-six 4h-pyrazole molecules and twenty-four Ce3(CO3)4 clusters. In each Ce3(CO3)4 cluster, there are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Ce(1)-O(2) bond lengths are 2.33 Å. Both Ce(1)-O(3) bond lengths are 2.31 Å. Both Ce(1)-O(4) bond lengths are 2.28 Å. In the second Ce site, Ce(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. Both Ce(2)-O(3) bond lengths are 2.40 Å. Both Ce(2)-O(4) bond lengths are 2.26 Å. All Ce(2)-O(1) bond lengths are 2.30 Å. C(1) is bonded in a 2-coordinate geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.28 Å. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Ce(2) and two equivalent Ce(1) atoms. In the second O site, O(1) is bonded in a bent 120 degrees geometry to one Ce(2) and one C(1) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Ce(2) and two equivalent Ce(1) atoms. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Ce(1) and one C(1) atom. Linkers: 36 [O]C(=O)C1=[C]C(C([O])=O)=N[N]1 ,21 [O]C(=O)C1=NN=C(C([O])=O)[C]1 ,39 [O]C(=O)[C]1[C]=C(C([O])=O)N=N1. Metal clusters: 18 [C]1O[Ce]23O[C]O[Ce]4567O[C]O[Ce](O[C]O[Ce]89%10(O1)O[C]O[Ce]1(O[C]O4)(O8)(O5)O[Ce](O[C]O9)(O[C]O6)(O%10)(O7)O1)(O2)O3 ,4 [C]1O[Ce]23O[C]O[Ce]4567O[C]O[Ce]89O[C]O[Ce]%10%11(O1)(O[C]O[Ce](O[C]O4)(O2)(O3)(O%10)O5)O[C]O[Ce](O[C]O6)(O8)(O9)(O%11)O7 ,2 [C]1O[Ce]23O[C]O[Ce]4567O[C]O[Ce]8(O[C]O[Ce]9%10(O1)(O[C]O[Ce]1(O[C]O4)(O5)O[Ce](O[C]O9)(O[C]O6)(O1)(O%10)O7)O8)(O2)O3. RCSR code: reo. The MOF has largest included sphere 20.73 A, density 0.99 g/cm3, surface area 2222.04 m2/g, accessible volume 0.76 cm3/g