ZnC20NH12O4 crystallizes in the orthorhombic Imma space group. Zn(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Zn(1)-O(1) bond lengths are 2.09 Å. Both Zn(1)-O(2) bond lengths are 2.03 Å. There are eleven inequivalent C sites. In the first C site, C(10) is bonded in a trigonal planar geometry to one C(10) and two equivalent C(8) atoms. The C(10)-C(10) bond length is 1.47 Å. Both C(10)-C(8) bond lengths are 1.33 Å. In the second C site, C(11) is bonded in a distorted trigonal planar geometry to two equivalent C(9) and one N(1) atom. Both C(11)-C(9) bond lengths are 1.36 Å. The C(11)-N(1) bond length is 1.41 Å. In the third C site, C(1) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one H(1) atom. The C(1)-C(5) bond length is 1.34 Å. The C(1)-C(7) bond length is 1.38 Å. The C(1)-H(1) bond length is 0.93 Å. In the fourth C site, C(2) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(2) atom. The C(2)-C(4) bond length is 1.38 Å. The C(2)-C(6) bond length is 1.39 Å. The C(2)-H(2) bond length is 0.93 Å. In the fifth C site, C(3) is bonded in a bent 120 degrees geometry to one C(5), one O(1), and one O(2) atom. The C(3)-C(5) bond length is 1.47 Å. The C(3)-O(1) bond length is 1.27 Å. The C(3)-O(2) bond length is 1.25 Å. In the sixth C site, C(4) is bonded in a distorted single-bond geometry to one C(2), one C(7), and one N(1) atom. The C(4)-C(7) bond length is 1.33 Å. The C(4)-N(1) bond length is 1.41 Å. In the seventh C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(6) atom. The C(5)-C(6) bond length is 1.35 Å. In the eighth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(2), one C(5), and one H(3) atom. The C(6)-H(3) bond length is 0.93 Å. In the ninth C site, C(7) is bonded in a distorted single-bond geometry to one C(1), one C(4), and one H(4) atom. The C(7)-H(4) bond length is 0.93 Å. In the tenth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(10), one C(9), and one H(5) atom. The C(8)-C(9) bond length is 1.43 Å. The C(8)-H(5) bond length is 0.93 Å. In the eleventh C site, C(9) is bonded in a distorted single-bond geometry to one C(11), one C(8), and one H(6) atom. The C(9)-H(6) bond length is 0.93 Å. N(1) is bonded in a trigonal planar geometry to one C(11) and two equivalent C(4) atoms. There are six 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(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(7) 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. There are two 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(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Zn(1) and one C(3) atom. Linkers: 2 [O]C(=O)c1ccc(N(c2ccc(C([O])=O)cc2)c2ccc(-c3ccc(N(c4ccc(C([O])=O)cc4)c4ccc(C([O])=O)cc4)cc3)cc2)cc1. Metal clusters: 2 [C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3. RCSR code: lvt. The MOF has largest included sphere 15.28 A, density 0.35 g/cm3, surface area 4474.91 m2/g, accessible volume 2.36 cm3/g