ZnC6H4(N3O2)2 crystallizes in the orthorhombic Ibam space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a tetrahedral geometry to one N(2), one N(4), one N(5), and one N(6) atom. The Zn(1)-N(2) bond length is 2.04 Å. The Zn(1)-N(4) bond length is 2.05 Å. The Zn(1)-N(5) bond length is 2.02 Å. The Zn(1)-N(6) bond length is 2.01 Å. In the second Zn site, Zn(2) is bonded in a distorted trigonal pyramidal geometry to four equivalent N(1) atoms. All Zn(2)-N(1) bond lengths are 2.02 Å. There are eight inequivalent C sites. In the first C site, C(8) is bonded in a trigonal planar geometry to one N(8) and two equivalent N(4) atoms. The C(8)-N(8) bond length is 1.46 Å. Both C(8)-N(4) bond lengths are 1.29 Å. In the second C site, C(1) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(1) atom. The C(1)-N(1) bond length is 1.36 Å. The C(1)-H(1) bond length is 0.95 Å. In the third C site, C(2) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(2) atom. The C(2)-N(2) bond length is 1.36 Å. The C(2)-H(2) bond length is 0.95 Å. In the fourth C site, C(3) is bonded in a trigonal planar geometry to one N(1), one N(2), and one N(3) atom. The C(3)-N(1) bond length is 1.33 Å. The C(3)-N(2) bond length is 1.33 Å. The C(3)-N(3) bond length is 1.43 Å. In the fifth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(3) atom. The C(4)-N(4) bond length is 1.45 Å. The C(4)-H(3) bond length is 0.95 Å. In the sixth C site, C(5) is bonded in a trigonal planar geometry to one N(5), one N(6), and one N(7) atom. The C(5)-N(5) bond length is 1.35 Å. The C(5)-N(6) bond length is 1.32 Å. The C(5)-N(7) bond length is 1.43 Å. In the seventh C site, C(6) is bonded in a distorted bent 120 degrees geometry to one N(6) and one H(4) atom. The C(6)-N(6) bond length is 1.36 Å. The C(6)-H(4) bond length is 0.95 Å. In the eighth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one N(5) and one H(5) atom. The C(7)-N(5) bond length is 1.35 Å. The C(7)-H(5) bond length is 0.95 Å. There are eight inequivalent N sites. In the first N site, N(8) is bonded in a trigonal planar geometry to one C(8) and two equivalent O(4) atoms. Both N(8)-O(4) bond lengths are 1.22 Å. In the second N site, N(1) is bonded in a trigonal planar geometry to one Zn(2), one C(1), and one C(3) atom. In the third N site, N(2) is bonded in a trigonal planar geometry to one Zn(1), one C(2), and one C(3) atom. In the fourth N site, N(3) is bonded in a trigonal planar geometry to one C(3), one O(1), and one O(2) atom. The N(3)-O(1) bond length is 1.23 Å. The N(3)-O(2) bond length is 1.23 Å. In the fifth N site, N(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(4), and one C(8) atom. In the sixth N site, N(5) is bonded in a trigonal planar geometry to one Zn(1), one C(5), and one C(7) atom. In the seventh N site, N(6) is bonded in a trigonal planar geometry to one Zn(1), one C(5), and one C(6) atom. In the eighth N site, N(7) is bonded in a trigonal planar geometry to one C(5), one O(3), and one O(5) atom. The N(7)-O(3) bond length is 1.23 Å. The N(7)-O(5) bond length is 1.24 Å. There are five 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(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(7) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one N(3) atom. In the second O site, O(2) is bonded in a single-bond geometry to one N(3) atom. In the third O site, O(3) is bonded in a single-bond geometry to one N(7) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one N(8) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one N(7) atom. Linkers: 18 O=[N+]([O-])C1=NC=C[N]1 ,2 O=[N+]([O-])C1=N[CH]C=N1. Metal clusters: 10 [Zn]. The MOF has largest included sphere 5.05 A, density 1.55 g/cm3, surface area 3722.09 m2/g, accessible volume 0.24 cm3/g