ZnC4NH9O6 crystallizes in the orthorhombic Pca2_1 space group. Zn(1) is bonded in a distorted octahedral geometry to one N(1), one O(1), one O(3), one O(4), one O(5), and one O(6) atom. The Zn(1)-N(1) bond length is 2.14 Å. The Zn(1)-O(1) bond length is 2.12 Å. The Zn(1)-O(3) bond length is 2.41 Å. The Zn(1)-O(4) bond length is 2.05 Å. The Zn(1)-O(5) bond length is 2.17 Å. The Zn(1)-O(6) bond length is 2.10 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(2), and one H(3) atom. The C(1)-N(1) bond length is 1.47 Å. The C(1)-H(2) bond length is 1.10 Å. The C(1)-H(3) bond length is 1.10 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(2)-O(1) bond length is 1.28 Å. The C(2)-O(2) bond length is 1.26 Å. In the third C site, C(3) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(4), and one H(5) atom. The C(3)-N(1) bond length is 1.47 Å. The C(3)-H(4) bond length is 1.10 Å. The C(3)-H(5) bond length is 1.10 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(4)-O(3) bond length is 1.25 Å. The C(4)-O(4) bond length is 1.29 Å. N(1) is bonded in a distorted tetrahedral geometry to one Zn(1), one C(1), one C(3), and one H(1) atom. The N(1)-H(1) bond length is 1.03 Å. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. The H(6)-O(6) bond length is 0.99 Å. In the seventh H site, H(7) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. The H(7)-O(2) bond length is 1.60 Å. The H(7)-O(5) bond length is 1.01 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(1) and one O(6) atom. The H(8)-O(1) bond length is 1.69 Å. The H(8)-O(6) bond length is 1.00 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(5) atom. The H(9)-O(5) bond length is 1.00 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(2), and one H(8) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one C(2) and one H(7) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Zn(1) and one C(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(4) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Zn(1), one H(7), and one H(9) atom. In the sixth O site, O(6) is bonded in a distorted water-like geometry to one Zn(1), one H(6), and one H(8) atom. Linkers: 4 [O]C(=O)CNCC([O])=O. Metal clusters: 4 [Zn]. The MOF has largest included sphere 1.64 A, density 2.16 g/cm3, surface area 3550.85 m2/g, accessible volume 0.06 cm3/g