ZnC12NH3O6 crystallizes in the cubic Fm-3m space group. There are two 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 1.94 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 1.92 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.44 Å. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.35 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.36 Å. The C(2)-C(7) bond length is 1.48 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(6), and one H(1) atom. The C(3)-C(6) bond length is 1.37 Å. The C(3)-H(1) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted water-like geometry to one C(5), one N(1), and one O(3) atom. The C(4)-C(5) bond length is 1.45 Å. The C(4)-N(1) bond length is 1.35 Å. The C(4)-O(3) bond length is 1.26 Å. In the fifth C site, C(5) is bonded in a 3-coordinate geometry to one C(4) and two equivalent C(5) atoms. There is one shorter (1.35 Å) and one longer (1.42 Å) C(5)-C(5) bond length. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to two equivalent C(3) and one N(1) atom. The C(6)-N(1) bond length is 1.43 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(2) atom. The C(7)-H(2) bond length is 0.95 Å. N(1) is bonded in a distorted T-shaped geometry to one C(6) and two equivalent C(4) atoms. There are two 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(7) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one C(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(4) atom. Linkers: 8 [O]C(=O)c1cc(C([O])=O)cc(N2[C@]3([O])c4c(c5c(c6c4[C@]4([O])N(c7cc(C([O])=O)cc(C([O])=O)c7)[C@]64[O])[C@]4([O])N(c6cc(C([O])=O)cc(C([O])=O)c6)[C@]54[O])[C@]23[O])c1. Metal clusters: 12 [C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3. The MOF has largest included sphere 19.23 A, density 0.69 g/cm3, surface area 3557.81 m2/g, accessible volume 1.07 cm3/g