ZnC10N5H7O2 crystallizes in the orthorhombic Pccn space group. Zn(1) is bonded in a tetrahedral geometry to one N(1), one N(2), one N(4), and one O(1) atom. The Zn(1)-N(1) bond length is 1.98 Å. The Zn(1)-N(2) bond length is 2.03 Å. The Zn(1)-N(4) bond length is 2.00 Å. The Zn(1)-O(1) bond length is 1.97 Å. There are ten inequivalent C sites. In the first C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(10), one N(1), and one H(6) atom. The C(9)-C(10) bond length is 1.37 Å. The C(9)-N(1) bond length is 1.38 Å. The C(9)-H(6) bond length is 1.08 Å. In the second C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(9), one N(5), and one H(7) atom. The C(10)-N(5) bond length is 1.38 Å. The C(10)-H(7) bond length is 1.08 Å. In the third C site, C(1) is bonded in a distorted single-bond geometry to one C(5), one C(6), and one N(2) atom. The C(1)-C(5) bond length is 1.41 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-N(2) bond length is 1.38 Å. In the fourth C site, C(2) is bonded in a distorted single-bond geometry to one C(4) and one H(1) atom. The C(2)-C(4) bond length is 1.42 Å. The C(2)-H(1) bond length is 1.09 Å. In the fifth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(1), and one O(2) atom. The C(3)-C(4) bond length is 1.50 Å. The C(3)-O(1) bond length is 1.29 Å. The C(3)-O(2) bond length is 1.25 Å. In the sixth C site, C(4) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(6) atom. The C(4)-C(6) bond length is 1.39 Å. In the seventh C site, C(5) is bonded in a distorted single-bond geometry to one C(1), one C(7), and one N(4) atom. The C(5)-C(7) bond length is 1.41 Å. The C(5)-N(4) bond length is 1.37 Å. In the eighth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(1), one C(4), and one H(2) atom. The C(6)-H(2) bond length is 1.09 Å. In the ninth C site, C(7) is bonded in a distorted single-bond geometry to one C(5) and one H(3) atom. The C(7)-H(3) bond length is 1.09 Å. In the tenth C site, C(8) is bonded in a trigonal planar geometry to one N(1), one N(5), and one H(5) atom. The C(8)-N(1) bond length is 1.34 Å. The C(8)-N(5) bond length is 1.35 Å. The C(8)-H(5) bond length is 1.08 Å. There are five inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(1), one C(8), and one C(9) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(1), and one N(3) atom. The N(2)-N(3) bond length is 1.33 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 1.34 Å. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(5), and one N(3) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one C(10), one C(8), and one H(4) atom. The N(5)-H(4) bond length is 1.04 Å. There are seven 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(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a distorted single-bond geometry to one N(5) and one O(2) atom. The H(4)-O(2) bond length is 1.66 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(10) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(3) atom. In the second O site, O(2) is bonded in a linear geometry to one C(3) and one H(4) atom. Linkers: 2 [O]C(=O)C1=CC=C2N=NN=C2[CH]1 ,1 [O]C(=O)C1=CC2=NN=N[C]2C=C1 ,2 [O]C(=O)C1=CC2=NN=NC2=C[CH]1 ,1 [O]C(=O)C1=C[CH]C2=NN=NC2=C1 ,1 [O]C(=O)c1ccc2c(c1)=N[N]N=2 ,1 [O]C(=O)[C]1C=CC2=NN=NC2=C1. Metal clusters: 8 [Zn]. The MOF has largest included sphere 5.60 A, density 1.25 g/cm3, surface area 4405.32 m2/g, accessible volume 0.34 cm3/g