Hf3C53H32O12 crystallizes in the tetragonal I4/m space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(3) atoms. All Hf(1)-O(1) bond lengths are 2.17 Å. All Hf(1)-O(3) bond lengths are 2.18 Å. In the second Hf site, Hf(2) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(3) atoms. Both Hf(2)-O(2) bond lengths are 2.23 Å. There are two shorter (2.08 Å) and two longer (2.11 Å) Hf(2)-O(3) bond lengths. There are fourteen inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(14), one C(3), and one C(6) atom. The C(1)-C(14) bond length is 1.56 Å. The C(1)-C(3) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.39 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(7) atom. The C(2)-C(4) bond length is 1.39 Å. The C(2)-C(5) bond length is 1.39 Å. The C(2)-C(7) bond length is 1.53 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(1), one C(4), and one H(1) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(1) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(2), one C(3), and one H(2) atom. The C(4)-H(2) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(5)-H(3) bond length is 0.95 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(1) and one H(4) atom. The C(6)-H(4) bond length is 0.95 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(12), one C(2), and one C(8) atom. The C(7)-C(12) bond length is 1.37 Å. The C(7)-C(8) bond length is 1.32 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(7) and one H(5) atom. The C(8)-H(5) bond length is 0.95 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(10) and one H(6) atom. The C(9)-C(10) bond length is 1.36 Å. The C(9)-H(6) bond length is 0.95 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(9) atom. The C(10)-C(11) bond length is 1.37 Å. The C(10)-C(13) bond length is 1.52 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10), one C(12), and one H(7) atom. The C(11)-C(12) bond length is 1.40 Å. The C(11)-H(7) bond length is 0.95 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(7), and one H(8) atom. The C(12)-H(8) bond length is 0.95 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(1), and one O(2) atom. The C(13)-O(1) bond length is 1.27 Å. The C(13)-O(2) bond length is 1.26 Å. In the fourteenth C site, C(14) is bonded in a tetrahedral geometry to four equivalent C(1) atoms. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(12) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Hf(1) and one C(13) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Hf(2) and one C(13) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Hf(1) and two equivalent Hf(2) atoms. Linkers: 2 [O]C(=O)c1ccc(-c2ccc(C(c3ccc(-c4ccc(C([O])=O)cc4)cc3)(c3ccc(-c4ccc(C([O])=O)cc4)cc3)c3ccc(-c4ccc(C([O])=O)cc4)cc3)cc2)cc1. Metal clusters: 1 [C]1O[Hf]23O[C]O[Hf]4567O[C]O[Hf]89O[C]O[Hf]%10(O1)(O4)(O5)O[Hf]1(O[C]O2)(O[C]O8)(O%10)O[Hf](O[C]O3)(O[C]O9)(O6)(O7)O1. RCSR code: flu. The MOF has largest included sphere 20.36 A, density 0.52 g/cm3, surface area 3083.77 m2/g, accessible volume 1.50 cm3/g