Zn7H18(C7O4)6(C5NH3O)6 is Indium-derived structured and crystallizes in the cubic Pm-3 space group. The structure is zero-dimensional and consists of twelve n,n'-dimethylbenzene-1,3-dicarboxamide molecules and one Zn7H18(C7O4)6 cluster. In the Zn7H18(C7O4)6 cluster, there are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. All Zn(1)-O(1) bond lengths are 1.91 Å. In the second Zn site, Zn(2) is bonded in a distorted square co-planar geometry to four equivalent O(2) atoms. All Zn(2)-O(2) bond lengths are 1.95 Å. In the third Zn site, Zn(3) is bonded in a trigonal non-coplanar geometry to three equivalent O(3) atoms. All Zn(3)-O(3) bond lengths are 1.91 Å. In the fourth Zn site, Zn(4) is bonded in a trigonal non-coplanar geometry to three equivalent O(4) atoms. All Zn(4)-O(4) bond lengths are 1.94 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.39 Å. The C(1)-C(7) bond length is 1.41 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(2) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-H(2) bond length is 0.95 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-C(8) bond length is 1.39 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one H(3) atom. The C(4)-H(3) bond length is 0.95 Å. In the fifth 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 sixth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.29 Å. The C(7)-O(2) bond length is 1.27 Å. In the seventh C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.27 Å. The C(8)-O(4) bond length is 1.30 Å. There are three inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(6) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Zn(1) and one C(7) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Zn(2) and one C(7) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Zn(3) and one C(8) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Zn(4) and one C(8) atom. Linkers: 12 [O]C(=O)c1cc(NC(=O)c2cccc(C(=O)Nc3cc(C([O])=O)cc(C([O])=O)c3)c2)cc(C([O])=O)c1. Metal clusters: 6 [C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3 ,8 [C]1O[Zn]2O[C]O[Zn](O1)O[C]O2. The MOF has largest included sphere 23.51 A, density 0.42 g/cm3, surface area 4062.92 m2/g, accessible volume 1.88 cm3/g