ZnC16NH4O8 is alpha Po structured and crystallizes in the tetragonal I4/mcm space group. The structure is zero-dimensional and consists of four ZnC16NH4O8 clusters. Zn(1) is bonded in a distorted square pyramidal geometry to one N(1) and four equivalent O(1) atoms. The Zn(1)-N(1) bond length is 2.06 Å. All Zn(1)-O(1) bond lengths are 2.03 Å. There are five inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(5) and one O(2) atom. The C(1)-C(5) bond length is 1.40 Å. The C(1)-O(2) bond length is 1.26 Å. In the second C site, C(2) is bonded in a 3-coordinate geometry to two equivalent C(3) and one N(1) atom. There is one shorter (1.01 Å) and one longer (1.13 Å) C(2)-C(3) bond length. The C(2)-N(1) bond length is 1.49 Å. In the third C site, C(3) is bonded in a 3-coordinate geometry to two equivalent C(2) and one N(1) atom. The C(3)-N(1) bond length is 1.47 Å. In the fourth C site, C(4) is bonded in a bent 120 degrees geometry to one C(5) and two equivalent O(1) atoms. The C(4)-C(5) bond length is 1.49 Å. Both C(4)-O(1) bond lengths are 1.25 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4) and two equivalent C(1) atoms. N(1) is bonded in a 9-coordinate geometry to one Zn(1), four equivalent C(2), and four equivalent C(3) atoms. H(1) is bonded in a single-bond geometry to one O(2) atom. The H(1)-O(2) bond length is 0.84 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(4) atom. In the second O site, O(2) is bonded in a water-like geometry to one C(1) and one H(1) atom. Linkers: 1 [C]12[C@@]34[C]5[C@@]62[C]2[C@]71[N@@]14[C@]48[C]3[C@]35[N@]56[C@]62[C]7[C@@]21[C]8[C@@]5([C]43)[C]62 ,3 [C]12[C@@]34[C]5[C@@]62[C]2[C@]71[N@@]14[C@]48[C]3[C@]35[N@@]56[C@]62[C]7[C@@]21[C]8[C@@]5([C]43)[C]62 ,8 [O]C(=O)c1c(O)c(O)c(C([O])=O)c(O)c1O. Metal clusters: 4 [C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3. The MOF has largest included sphere 7.09 A, density 1.23 g/cm3, surface area 2978.48 m2/g, accessible volume 0.45 cm3/g