Zn2C9N4H10O3 crystallizes in the orthorhombic Pba2 space group. Zn(1) is bonded to one N(1), one N(2), one O(1), and one O(2) atom to form corner-sharing ZnN2O2 tetrahedra. The Zn(1)-N(1) bond length is 1.96 Å. The Zn(1)-N(2) bond length is 1.96 Å. The Zn(1)-O(1) bond length is 2.00 Å. The Zn(1)-O(2) bond length is 2.01 Å. There are five inequivalent C sites. In the first C site, C(3) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(2) atom. The C(3)-N(1) bond length is 1.38 Å. The C(3)-H(2) bond length is 1.08 Å. In the second C site, C(4) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(1) atoms. The C(4)-O(2) bond length is 1.33 Å. Both C(4)-O(1) bond lengths are 1.28 Å. In the third C site, C(5) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one H(3), one H(4), and one H(5) atom. The C(5)-C(1) bond length is 1.49 Å. The C(5)-H(3) bond length is 1.10 Å. The C(5)-H(4) bond length is 1.10 Å. The C(5)-H(5) bond length is 1.10 Å. In the fourth C site, C(1) is bonded in a distorted trigonal planar geometry to one C(5), one N(1), and one N(2) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(2) bond length is 1.35 Å. In the fifth C site, C(2) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(1) atom. The C(2)-N(2) bond length is 1.38 Å. The C(2)-H(1) bond length is 1.08 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(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Zn(1), one C(1), and one C(2) atom. There are five 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(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Zn(1) and one C(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one C(4) atom. Linkers: 1 CC1=N[CH]C=N1 ,3 CC1=NC=C[N]1. Metal clusters: 4 [Zn]. The MOF has largest included sphere 2.70 A, density 1.92 g/cm3, surface area 4012.18 m2/g, accessible volume 0.11 cm3/g