ZnC3H3(NO2)2 crystallizes in the orthorhombic Pnn2 space group. Zn(1) is bonded in an octahedral geometry to one N(1), one N(2), one O(1), one O(2), one O(3), and one O(4) atom. The Zn(1)-N(1) bond length is 2.09 Å. The Zn(1)-N(2) bond length is 2.13 Å. The Zn(1)-O(1) bond length is 2.08 Å. The Zn(1)-O(2) bond length is 2.04 Å. The Zn(1)-O(3) bond length is 2.13 Å. The Zn(1)-O(4) bond length is 2.10 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one H(1), and one O(1) atom. The C(1)-N(1) bond length is 1.25 Å. The C(1)-H(1) bond length is 1.01 Å. The C(1)-O(1) bond length is 1.21 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(2), one H(2), and one O(2) atom. The C(2)-N(2) bond length is 1.30 Å. The C(2)-H(2) bond length is 0.91 Å. The C(2)-O(2) bond length is 1.24 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one H(3) and two equivalent O(3) atoms. The C(3)-H(3) bond length is 1.17 Å. Both C(3)-O(3) bond lengths are 1.29 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one H(4) and two equivalent O(4) atoms. The C(4)-H(4) bond length is 1.30 Å. Both C(4)-O(4) bond lengths are 1.19 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(1) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(2) atom. There are four 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(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. There are four 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(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(4) atom. Linkers: 2 [O]C=O ,2 [O][C]=O ,8 [N]C=O. Metal clusters: 4 [Zn]. The MOF has largest included sphere 3.91 A, density 1.55 g/cm3, surface area 3838.16 m2/g, accessible volume 0.22 cm3/g