Eu3C24(N3O4)4 is Copper structured and crystallizes in the cubic Fm-3m space group. The structure is zero-dimensional and consists of four Eu3C24(N3O4)4 clusters. Eu(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Eu(1)-O(1) bond lengths are 2.37 Å. All Eu(1)-O(2) bond lengths are 2.36 Å. There are three inequivalent C sites. In the first C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(3) and two equivalent O(2) atoms. The C(2)-C(3) bond length is 1.51 Å. Both C(2)-O(2) bond lengths are 1.28 Å. In the second C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2) and two equivalent C(1) atoms. Both C(3)-C(1) bond lengths are 1.36 Å. In the third C site, C(1) is bonded in a distorted single-bond geometry to one C(3) and one N(1) atom. The C(1)-N(1) bond length is 1.36 Å. N(1) is bonded in a distorted water-like geometry to one C(1) and one O(2) atom. The N(1)-O(2) bond length is 2.01 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 3-coordinate geometry to one Eu(1), one C(2), and one N(1) atom. In the second O site, O(1) is bonded in a trigonal non-coplanar geometry to three equivalent Eu(1) atoms. Linkers: 22 [N]c1c([N])c(C([O])=O)c([N])c([N])c1C([O])=O. Metal clusters: 1 [O].[O].[O][Eu]123([O])O[C]O[Eu]4567O[C]O[Eu]89O[C]O[Eu]%10(O[C]O1)(O[C]O4)(O[C]O[Eu]1(O[C]O8)(O[C]O2)(O[C]O[Eu](O[C]O9)(O[C]O3)(O[C]O5)(O6)O1)O%10)O7 ,2 [O].[O].[O][Eu]123O[C]O[Eu]4567O[C]O[Eu]89(O[C]O1)(O[C]O[Eu]1%10(O[C]O2)(O[C]O[Eu]2(O[C]O3)(O[C]O4)(O[C]O[Eu](O[C]O5)(O[C]O8)(O[C]O1)(O2)O%10)O6)O9)O7 ,1 [O].[O][Eu]123O[C]O[Eu]456([O])O[C]O[Eu]7([O])(O[C]O1)(O[C]O[Eu]189(O[C]O2)O[C]O[Eu]2(O[C]O3)(O[C]O4)(O[C]O[Eu](O[C]O5)(O[C]O7)(O[C]O1)(O2)O8)O9)O6. The MOF has largest included sphere 8.59 A, density 1.52 g/cm3, surface area 2475.26 m2/g, accessible volume 0.33 cm3/g