Zn2C9H10(N8O)2 crystallizes in the orthorhombic Cmc2_1 space group. Zn(1) is bonded to one N(1), one N(4), one N(5), one N(8), and one O(1) atom to form ZnN4O trigonal bipyramids that share  a cornercorner with one C(5)H2O2 tetrahedra. The Zn(1)-N(1) bond length is 2.29 Å. The Zn(1)-N(4) bond length is 2.01 Å. The Zn(1)-N(5) bond length is 2.02 Å. The Zn(1)-N(8) bond length is 2.04 Å. The Zn(1)-O(1) bond length is 2.15 Å. There are five inequivalent C sites. In the first C site, C(5) is bonded to two equivalent H(5,6) and two equivalent O(1) atoms to form CH2O2 tetrahedra that share corners with two equivalent Zn(1)N4O trigonal bipyramids. Both C(5)-H(5,6) bond lengths are 0.97 Å. Both C(5)-O(1) bond lengths are 1.24 Å. In the second C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one N(4) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-N(4) bond length is 1.32 Å. In the third C site, C(2) is bonded in a water-like geometry to one C(1) and two equivalent H(1,2) atoms. Both C(2)-H(1,2) bond lengths are 0.97 Å. In the fourth C site, C(3) is bonded in a water-like geometry to one C(4) and two equivalent H(3,4) atoms. The C(3)-C(4) bond length is 1.50 Å. Both C(3)-H(3,4) bond lengths are 0.97 Å. In the fifth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one N(5), and one N(8) atom. The C(4)-N(5) bond length is 1.32 Å. The C(4)-N(8) bond length is 1.33 Å. There are eight inequivalent N sites. In the first N site, N(8) is bonded in a 3-coordinate geometry to one Zn(1), one C(4), and one N(7) atom. The N(8)-N(7) bond length is 1.36 Å. In the second N site, N(1) is bonded in a 3-coordinate geometry to one Zn(1), one C(1), and one N(2) atom. The N(1)-N(2) bond length is 1.37 Å. In the third N site, N(2) is bonded in a water-like geometry to one N(1) and one N(3) atom. The N(2)-N(3) bond length is 1.31 Å. In the fourth 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 1.37 Å. In the fifth N site, N(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(1), and one N(3) atom. 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(5) bond length is 1.37 Å. The N(6)-N(7) bond length is 1.29 Å. In the seventh N site, N(7) is bonded in a water-like geometry to one N(6) and one N(8) atom. In the eighth N site, N(5) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(4), and one N(6) 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(2) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(5,6) is bonded in a single-bond geometry to one C(5) atom. O(1) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(5) atom. Linkers: 8 C(CC1=NN=N[N]1)C1=NN=N[N]1. Metal clusters: 4 [Zn]OCO[Zn]. The MOF has largest included sphere 4.76 A, density 1.57 g/cm3, surface area 3706.88 m2/g, accessible volume 0.23 cm3/g