ZnC8NH9O6 crystallizes in the monoclinic P2_1/c space group. Zn(1) is bonded in an octahedral geometry to one N(1), one O(1), one O(2), one O(3), 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 2.23 Å. The Zn(1)-O(2) bond length is 2.15 Å. The Zn(1)-O(3) bond length is 2.11 Å. The Zn(1)-O(5) bond length is 2.12 Å. The Zn(1)-O(6) bond length is 2.12 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.42 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-C(7) bond length is 1.50 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one C(3), and one N(1) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-N(1) bond length is 1.42 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one H(7) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(7) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(8) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-C(8) bond length is 1.50 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(4) and one H(8) atom. The C(5)-H(8) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(1) and one H(9) atom. The C(6)-H(9) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.28 Å. The C(7)-O(2) bond length is 1.27 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.27 Å. The C(8)-O(4) bond length is 1.29 Å. N(1) is bonded in a distorted tetrahedral geometry to one Zn(1), one C(2), one H(5), and one H(6) atom. The N(1)-H(5) bond length is 1.02 Å. The N(1)-H(6) bond length is 1.04 Å. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(4) and one O(5) atom. The H(1)-O(4) bond length is 1.62 Å. The H(1)-O(5) bond length is 1.01 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(1) and one O(5) atom. The H(2)-O(1) bond length is 1.65 Å. The H(2)-O(5) bond length is 1.01 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(4) and one O(6) atom. The H(3)-O(4) bond length is 1.63 Å. The H(3)-O(6) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(6) atom. The H(4)-O(6) bond length is 0.99 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(1) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(1) and one O(2) atom. The H(6)-O(2) bond length is 1.76 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(3) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(5) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(6) atom. 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(7), and one H(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Zn(1), one C(7), and one H(6) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(8) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one C(8), one H(1), and one H(3) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Zn(1), one H(1), and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted water-like geometry to one Zn(1), one H(3), and one H(4) atom. Linkers: 4 Nc1cc(C([O])=O)ccc1C([O])=O. Metal clusters: 4 [Zn]. The MOF has largest included sphere 1.76 A, density 2.04 g/cm3, surface area 3338.07 m2/g, accessible volume 0.10 cm3/g