Zn3C10N4H4O9 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one N(1), one O(1), one O(4), one O(5), and one O(6) atom to form corner-sharing ZnNO4 trigonal bipyramids. The Zn(1)-N(1) bond length is 2.01 Å. The Zn(1)-O(1) bond length is 2.05 Å. The Zn(1)-O(4) bond length is 2.02 Å. The Zn(1)-O(5) bond length is 1.93 Å. The Zn(1)-O(6) bond length is 2.22 Å. In the second Zn site, Zn(2) is bonded in a rectangular see-saw-like geometry to one N(2), one O(2), one O(7), and one O(8) atom. The Zn(2)-N(2) bond length is 2.01 Å. The Zn(2)-O(2) bond length is 2.20 Å. The Zn(2)-O(7) bond length is 2.03 Å. The Zn(2)-O(8) bond length is 1.97 Å. In the third Zn site, Zn(3) is bonded to one N(3), one N(4), one O(3), one O(5), and one O(9) atom to form corner-sharing ZnN2O3 trigonal bipyramids. The Zn(3)-N(3) bond length is 2.00 Å. The Zn(3)-N(4) bond length is 2.01 Å. The Zn(3)-O(3) bond length is 2.18 Å. The Zn(3)-O(5) bond length is 1.93 Å. The Zn(3)-O(9) bond length is 2.19 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(4), and one H(1) atom. The C(1)-N(1) bond length is 1.32 Å. The C(1)-N(4) bond length is 1.34 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(2)-C(6) bond length is 1.47 Å. The C(2)-O(1) bond length is 1.25 Å. The C(2)-O(2) bond length is 1.26 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(4) atom. The C(3)-N(2) bond length is 1.33 Å. The C(3)-N(3) bond length is 1.33 Å. The C(3)-H(4) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5), one C(6), and one N(3) atom. The C(4)-C(5) bond length is 1.50 Å. The C(4)-C(6) bond length is 1.37 Å. The C(4)-N(3) bond length is 1.37 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(5)-O(3) bond length is 1.26 Å. The C(5)-O(4) bond length is 1.27 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one N(2) atom. The C(6)-N(2) bond length is 1.36 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one N(4) atom. The C(7)-N(4) bond length is 1.37 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(6) and one O(7) atom. The C(8)-O(6) bond length is 1.26 Å. The C(8)-O(7) bond length is 1.25 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one N(1) atom. The C(9)-N(1) bond length is 1.38 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one O(8) and one O(9) atom. The C(10)-O(8) bond length is 1.27 Å. The C(10)-O(9) bond length is 1.26 Å. There are four 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(9) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Zn(2), one C(3), and one C(6) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Zn(3), one C(3), and one C(4) atom. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Zn(3), one C(1), and one C(7) atom. There are four 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 O(5) atom. The H(2)-O(5) bond length is 0.96 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(5) atom. The H(3)-O(5) bond length is 0.97 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. There are nine 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(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(3) and one C(5) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(5) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Zn(1), one Zn(3), one H(2), and one H(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(8) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(8) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(10) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Zn(3) and one C(10) atom. Linkers: 1 [O]C(=O)[C]1N=CN=C1C([O])=O ,6 [O]C(=O)C1=C(C([O])=O)N=C[N]1. Metal clusters: 12 [Zn]. The MOF has largest included sphere 5.83 A, density 1.29 g/cm3, surface area 3160.38 m2/g, accessible volume 0.41 cm3/g