Fe3C36N3H36O13C18NH12 is Indium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is zero-dimensional and consists of two C18NH12 clusters and two Fe3C36N3H36O13 clusters. In each C18NH12 cluster, there are four inequivalent C sites. In the first C site, C(7) is bonded in a distorted single-bond geometry to one C(2) and one H(4) atom. The C(7)-C(2) bond length is 1.38 Å. The C(7)-H(4) bond length is 0.93 Å. In the second C site, C(9) is bonded in a distorted single-bond geometry to one C(2) and one H(6) atom. The C(9)-C(2) bond length is 1.39 Å. The C(9)-H(6) bond length is 0.93 Å. In the third C site, C(2) is bonded in a 5-coordinate geometry to one C(3), two equivalent C(7), and two equivalent C(9) atoms. The C(2)-C(3) bond length is 1.51 Å. In the fourth C site, C(3) is bonded in a distorted linear geometry to one C(2) and one N(2) atom. The C(3)-N(2) bond length is 1.21 Å. N(2) is bonded in a trigonal planar geometry to three equivalent C(3) atoms. There are two inequivalent H sites. In the first H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(4) is bonded in a single-bond geometry to one C(7) atom. In each Fe3C36N3H36O13 cluster, Fe(1) is bonded to one N(1), one O(2), and four equivalent O(1) atoms to form corner-sharing FeNO5 octahedra. The corner-sharing octahedral tilt angles are 60°. The Fe(1)-N(1) bond length is 2.13 Å. The Fe(1)-O(2) bond length is 1.91 Å. All Fe(1)-O(1) bond lengths are 2.03 Å. There are five inequivalent C sites. In the first C site, C(6) is bonded in a 3-coordinate geometry to one H(3) and two equivalent H(2) atoms. The C(6)-H(3) bond length is 0.93 Å. Both C(6)-H(2) bond lengths are 0.93 Å. In the second C site, C(1) is bonded in a distorted single-bond geometry to one C(5) and one H(1) atom. The C(1)-C(5) bond length is 1.35 Å. The C(1)-H(1) bond length is 0.93 Å. In the third C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(5) and two equivalent O(1) atoms. The C(4)-C(5) bond length is 1.50 Å. Both C(4)-O(1) bond lengths are 1.25 Å. In the fourth C site, C(5) is bonded in a trigonal planar geometry to one C(4) and two equivalent C(1) atoms. In the fifth C site, C(8) is bonded in a 3-coordinate geometry to one H(5) and two equivalent H(2) atoms. The C(8)-H(5) bond length is 0.93 Å. Both C(8)-H(2) bond lengths are 0.89 Å. N(1) is bonded in a 4-coordinate geometry to one Fe(1) and four equivalent H(2) atoms. All N(1)-H(2) bond lengths are 0.85 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a distorted trigonal non-coplanar geometry to one C(6), one C(8), and one N(1) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the fourth H site, H(3) is bonded in a single-bond geometry to one C(6) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Fe(1) atoms. Linkers: 1 [C@@H]12[C@@H]3[C@@]42[C@H]1[C@H]34.[CH][C@@H]1[C@H]2[C@@]31[CH][C@H]3[CH][CH]2.[CH][C@H]1[C@@H]2[C@@]31[CH][CH][C@H]([CH]2)[CH]3.[C]N([C])[C].[CH].[CH].[CH].[CH].[CH].[NH4].[NH4].[NH4] ,1 [C@@H]12[C@@H]3[C@@]42[C@H]1[C@H]34.[CH]1[C@@H]2[CH][C@@H]3[C@@H]4[C@H]1[C@]34[CH]2.[CH][C@H]1[C@@H]2[C@@]31[C@@H]2[CH]3.[C]N([C])[C].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[NH4].[NH4].[NH4] ,1 [CH][C@@]12[CH][CH][C@H]3[C@@H]1[C@@H]2[CH]3.[CH][C@@H]1[C@H]2[C@]31[CH][CH][C@@H]([CH]2)[CH]3.[CH][C@@H]1[C@H]2[C@]1([C@H]2[CH])[CH].[C]N([C])[C].[CH].[CH].[CH].[NH4].[NH4].[NH4] ,6 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 2 [C]1O[Fe]23O[C]O[Fe]45(O1)O[C]O[Fe](O[C]O2)(O[C]O3)(O[C]O4)O5. RCSR code: acs. The MOF has largest included sphere 8.82 A, density 1.04 g/cm3, surface area 3553.91 m2/g, accessible volume 0.56 cm3/g