ZnC14N2H3O5 crystallizes in the trigonal R-3m space group. Zn(1) is bonded in a distorted square pyramidal geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. The Zn(1)-O(3) bond length is 1.97 Å. Both Zn(1)-O(1) bond lengths are 2.05 Å. Both Zn(1)-O(2) bond lengths are 2.03 Å. There are nine inequivalent C sites. In the first C site, C(6) is bonded in a 2-coordinate geometry to two equivalent N(1) atoms. Both C(6)-N(1) bond lengths are 1.57 Å. In the second C site, C(1) is bonded in a distorted single-bond geometry to one C(2), one C(8), and one H(1) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-C(8) bond length is 1.40 Å. The C(1)-H(1) bond length is 0.93 Å. In the third C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(9) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-C(9) bond length is 1.40 Å. In the fourth C site, C(3) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(3)-O(1) bond length is 1.26 Å. The C(3)-O(2) bond length is 1.25 Å. In the fifth C site, C(4) is bonded in a single-bond geometry to one N(1) atom. The C(4)-N(1) bond length is 1.53 Å. In the sixth C site, C(5) is bonded in a 3-coordinate geometry to two equivalent C(5) and one N(1) atom. There is one shorter (0.80 Å) and one longer (1.55 Å) C(5)-C(5) bond length. The C(5)-N(1) bond length is 1.52 Å. In the seventh C site, C(7) is bonded in a linear geometry to one C(7) and one C(8) atom. The C(7)-C(7) bond length is 1.17 Å. The C(7)-C(8) bond length is 1.43 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(1) atoms. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(2) atom. The C(9)-H(2) bond length is 0.93 Å. N(1) is bonded in a 5-coordinate geometry to one C(4), one C(5), one C(6), one N(1), and one O(3) atom. The N(1)-N(1) bond length is 1.34 Å. The N(1)-O(3) bond length is 1.35 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(9) atom. There are three inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to one Zn(1) and two equivalent N(1) atoms. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(3) atom. In the third O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(3) atom. Linkers: 6 [C]1[C][N@@]23O[N@]43[C]3[C]2[C]2[N@]51O[N@@]15[C]2[C]2[C]3[N@]3([C][C]4)[N@@]2([C][C]1)O3.[C]1[C][C]1 ,9 [O]C(=O)c1cc(C#Cc2cc(C([O])=O)cc(C([O])=O)c2)cc(C([O])=O)c1. Metal clusters: 9 [C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3. RCSR code: nbo. The MOF has largest included sphere 10.86 A, density 1.02 g/cm3, surface area 3539.68 m2/g, accessible volume 0.64 cm3/g