Zn2C7H6(N4O)2 crystallizes in the trigonal R-3 space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one N(1), one N(4), one N(8), one O(1), and one O(2) atom to form corner-sharing ZnN3O2 trigonal bipyramids. The Zn(1)-N(1) bond length is 2.04 Å. The Zn(1)-N(4) bond length is 2.05 Å. The Zn(1)-N(8) bond length is 2.03 Å. The Zn(1)-O(1) bond length is 2.07 Å. The Zn(1)-O(2) bond length is 2.07 Å. In the second Zn site, Zn(2) is bonded to one N(2), one N(5), one N(7), one O(1), and one O(2) atom to form corner-sharing ZnN3O2 trigonal bipyramids. The Zn(2)-N(2) bond length is 2.25 Å. The Zn(2)-N(5) bond length is 2.07 Å. The Zn(2)-N(7) bond length is 2.23 Å. The Zn(2)-O(1) bond length is 1.95 Å. The Zn(2)-O(2) bond length is 1.96 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal non-coplanar geometry to one C(6), one C(7), and one O(2) atom. The C(1)-C(6) bond length is 1.54 Å. The C(1)-C(7) bond length is 0.81 Å. The C(1)-O(2) bond length is 1.41 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one N(1), and one N(4) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-N(1) bond length is 1.33 Å. The C(2)-N(4) bond length is 1.34 Å. In the third C site, C(3) is bonded in a water-like geometry to one C(2) and two equivalent H(1,2) atoms. Both C(3)-H(1,2) bond lengths are 0.97 Å. In the fourth C site, C(4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent H(3,4) and one O(1) atom. Both C(4)-H(3,4) bond lengths are 0.97 Å. The C(4)-O(1) bond length is 1.41 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(6), one N(5), and one N(8) atom. The C(5)-C(6) bond length is 1.50 Å. The C(5)-N(5) bond length is 1.32 Å. The C(5)-N(8) bond length is 1.33 Å. In the sixth C site, C(6) is bonded in a water-like geometry to one C(1); one C(5); and two equivalent H(5,6) atoms. Both C(6)-H(5,6) bond lengths are 0.97 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(1) atom. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.35 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one Zn(2), one N(1), and one N(3) atom. The N(2)-N(3) bond length is 1.30 Å. In the third N site, N(3) is bonded in a water-like geometry to one N(2) and one N(4) atom. The N(3)-N(4) bond length is 1.36 Å. In the fourth N site, N(4) is bonded in a 3-coordinate geometry to one Zn(1), one C(2), and one N(3) atom. In the fifth N site, N(5) is bonded in a 3-coordinate geometry to one Zn(2), one C(5), and one N(6) atom. The N(5)-N(6) bond length is 1.35 Å. In the sixth N site, N(6) is bonded in a water-like geometry to one N(5) and one N(7) atom. The N(6)-N(7) bond length is 1.30 Å. In the seventh N site, N(7) is bonded in a distorted trigonal planar geometry to one Zn(2), one N(6), and one N(8) atom. The N(7)-N(8) bond length is 1.34 Å. In the eighth N site, N(8) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(5), and one N(7) atom. There are three inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(5,6) is bonded in a single-bond geometry to one C(6) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Zn(1), one Zn(2), and one C(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one C(1) atom. Linkers: 18 [C][C]([O])CC1=NN=N[N]1 ,18 [O]CCC1=NN=N[N]1. Metal clusters: 36 [Zn]. The MOF has largest included sphere 6.01 A, density 2.05 g/cm3, surface area 2949.72 m2/g, accessible volume 0.14 cm3/g