ZnC7NH5O5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one N(1), one O(1), one O(5), one O(8), and one O(9) atom to form corner-sharing ZnNO4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 64°. The Zn(1)-N(1) bond length is 2.06 Å. The Zn(1)-O(1) bond length is 2.13 Å. The Zn(1)-O(5) bond length is 1.99 Å. The Zn(1)-O(8) bond length is 2.00 Å. The Zn(1)-O(9) bond length is 2.25 Å. In the second Zn site, Zn(2) is bonded to one N(2), one O(10), one O(2), one O(4), one O(5), and one O(7) atom to form corner-sharing ZnNO5 octahedra. The Zn(2)-N(2) bond length is 2.09 Å. The Zn(2)-O(10) bond length is 2.09 Å. The Zn(2)-O(2) bond length is 2.09 Å. The Zn(2)-O(4) bond length is 2.17 Å. The Zn(2)-O(5) bond length is 2.15 Å. The Zn(2)-O(7) bond length is 2.09 Å. There are fourteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(7), and one N(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(7) bond length is 1.51 Å. The C(1)-N(1) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(2) 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(6) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-C(6) bond length is 1.51 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one H(3) atom. The C(5)-N(1) bond length is 1.34 Å. The C(5)-H(3) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(6)-O(3) bond length is 1.26 Å. The C(6)-O(4) bond length is 1.29 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 1.26 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(14), one C(9), and one N(2) atom. The C(8)-C(14) bond length is 1.52 Å. The C(8)-C(9) bond length is 1.40 Å. The C(8)-N(2) bond length is 1.35 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(11), one C(8), and one H(4) atom. The C(9)-C(11) bond length is 1.39 Å. The C(9)-H(4) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(13) atom. The C(10)-C(11) bond length is 1.40 Å. The C(10)-C(12) bond length is 1.40 Å. The C(10)-C(13) bond length is 1.50 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10), one C(9), and one H(5) atom. The C(11)-H(5) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(10), one N(2), and one H(6) atom. The C(12)-N(2) bond length is 1.34 Å. The C(12)-H(6) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(7), and one O(8) atom. The C(13)-O(7) bond length is 1.26 Å. The C(13)-O(8) bond length is 1.28 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(5), and one O(6) atom. The C(14)-O(5) bond length is 1.32 Å. The C(14)-O(6) bond length is 1.23 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(1), one C(1), and one C(5) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Zn(2), one C(12), and one C(8) atom. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(9) atom. The H(7)-O(9) bond length is 0.97 Å. In the eighth H site, H(8) is bonded in a distorted linear geometry to one O(4) and one O(9) atom. The H(8)-O(4) bond length is 1.62 Å. The H(8)-O(9) bond length is 1.01 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(10) atom. The H(9)-O(10) bond length is 1.00 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(10) atom. The H(10)-O(10) bond length is 0.98 Å. There are ten inequivalent O sites. In the first O site, O(5) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one C(14) atom. In the second O site, O(6) is bonded in a single-bond geometry to one C(14) atom. In the third O site, O(7) is bonded in a bent 150 degrees geometry to one Zn(2) and one C(13) atom. In the fourth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(13) atom. In the fifth O site, O(9) is bonded in a distorted water-like geometry to one Zn(1), one H(7), and one H(8) atom. In the sixth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Zn(2), one H(10), and one H(9) atom. In the seventh O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(7) atom. In the eighth O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(7) atom. In the ninth O site, O(3) is bonded in a distorted single-bond geometry to one C(6) atom. In the tenth O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(2), one C(6), and one H(8) atom. Linkers: 8 [O]C(=O)c1ccc(C([O])=O)nc1. Metal clusters: 8 [Zn]. The MOF has largest included sphere 4.49 A, density 1.52 g/cm3, surface area 3739.79 m2/g, accessible volume 0.27 cm3/g