Fe3C12O13 crystallizes in the hexagonal P-62c space group. Fe(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. The Fe(1)-O(3) bond length is 1.85 Å. Both Fe(1)-O(1) bond lengths are 2.13 Å. Both Fe(1)-O(2) bond lengths are 2.21 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.51 Å. The C(1)-O(1) bond length is 1.22 Å. The C(1)-O(2) bond length is 1.27 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 1.49 Å. There are three inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to three equivalent Fe(1) atoms. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Fe(1) and one C(1) atom. In the third O site, O(2) is bonded in a single-bond geometry to one Fe(1) and one C(1) atom. Linkers: 6 [O]C(=O)[C][C]C([O])=O. 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 8.62 A, density 0.82 g/cm3, surface area 3340.34 m2/g, accessible volume 0.83 cm3/g