Zn5C26H20(N9O5)2 crystallizes in the orthorhombic P2_12_12 space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted tetrahedral geometry to one N(5), one N(6), one N(7), and one O(2) atom. The Zn(1)-N(5) bond length is 2.01 Å. The Zn(1)-N(6) bond length is 2.06 Å. The Zn(1)-N(7) bond length is 2.06 Å. The Zn(1)-O(2) bond length is 1.98 Å. In the second Zn site, Zn(2) is bonded in a tetrahedral geometry to one N(1), one N(2), one N(3), and one O(5) atom. The Zn(2)-N(1) bond length is 1.98 Å. The Zn(2)-N(2) bond length is 1.96 Å. The Zn(2)-N(3) bond length is 1.97 Å. The Zn(2)-O(5) bond length is 2.13 Å. In the third Zn site, Zn(3) is bonded in a 6-coordinate geometry to two equivalent N(4), two equivalent O(1), and two equivalent O(4) atoms. Both Zn(3)-N(4) bond lengths are 2.09 Å. Both Zn(3)-O(1) bond lengths are 2.07 Å. Both Zn(3)-O(4) bond lengths are 2.39 Å. There are thirteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(12), one C(5), and one N(4) atom. The C(1)-C(12) bond length is 1.42 Å. The C(1)-C(5) bond length is 1.41 Å. The C(1)-N(4) bond length is 1.39 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(9), one N(3), and one H(1) atom. The C(2)-C(9) bond length is 1.40 Å. The C(2)-N(3) bond length is 1.34 Å. The C(2)-H(1) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one N(5), and one H(2) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-N(5) bond length is 1.34 Å. The C(3)-H(2) bond length is 1.08 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(3) atom. The C(4)-C(11) bond length is 1.40 Å. The C(4)-C(13) bond length is 1.47 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(1), one N(1), and one N(7) atom. The C(5)-N(1) bond length is 1.38 Å. The C(5)-N(7) bond length is 1.36 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(9), one N(6), and one H(3) atom. The C(6)-C(9) bond length is 1.41 Å. The C(6)-N(6) bond length is 1.34 Å. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a bent 120 degrees geometry to one C(9), one O(1), and one O(4) atom. The C(7)-C(9) bond length is 1.47 Å. The C(7)-O(1) bond length is 1.31 Å. The C(7)-O(4) bond length is 1.26 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one N(1), one N(4), and one H(4) atom. The C(8)-N(1) bond length is 1.36 Å. The C(8)-N(4) bond length is 1.33 Å. The C(8)-H(4) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one N(7), one N(9), and one H(7) atom. The C(10)-N(7) bond length is 1.35 Å. The C(10)-N(9) bond length is 1.33 Å. The C(10)-H(7) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(4), one N(2), and one H(8) atom. The C(11)-N(2) bond length is 1.34 Å. The C(11)-H(8) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(1), one N(8), and one N(9) atom. The C(12)-N(8) bond length is 1.35 Å. The C(12)-N(9) bond length is 1.36 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(2), and one O(3) atom. The C(13)-O(2) bond length is 1.31 Å. The C(13)-O(3) bond length is 1.26 Å. There are nine inequivalent N sites. In the first N site, N(8) is bonded in a trigonal planar geometry to one C(12), one H(5), and one H(6) atom. The N(8)-H(5) bond length is 1.01 Å. The N(8)-H(6) bond length is 1.03 Å. In the second N site, N(9) is bonded in a bent 120 degrees geometry to one C(10) and one C(12) atom. In the third N site, N(1) is bonded in a trigonal planar geometry to one Zn(2), one C(5), and one C(8) atom. In the fourth N site, N(2) is bonded in a 3-coordinate geometry to one Zn(2), one C(11), and one N(5) atom. The N(2)-N(5) bond length is 1.38 Å. In the fifth N site, N(3) is bonded in a 3-coordinate geometry to one Zn(2), one C(2), and one N(6) atom. The N(3)-N(6) bond length is 1.37 Å. In the sixth N site, N(4) is bonded in a trigonal planar geometry to one Zn(3), one C(1), and one C(8) atom. In the seventh N site, N(5) is bonded in a 3-coordinate geometry to one Zn(1), one C(3), and one N(2) atom. In the eighth N site, N(6) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(6), and one N(3) atom. In the ninth N site, N(7) is bonded in a trigonal planar geometry to one Zn(1), one C(10), and one C(5) atom. There are ten 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(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(10) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(11) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(5) atom. The H(9)-O(5) bond length is 0.97 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(5) atom. The H(10)-O(5) bond length is 0.97 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Zn(3) and one C(7) atom. In the second O site, O(2) is bonded in a water-like geometry to one Zn(1) and one C(13) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(13) atom. In the fourth O site, O(4) is bonded in a distorted L-shaped geometry to one Zn(3) and one C(7) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Zn(2), one H(10), and one H(9) atom. Linkers: 1 NC1=NC=NC2=N[CH]N([Zn@](OC(=O)C3=CN=N[CH]3)(OC(=O)C3=C[N]N=C3)N3[CH]N=C4[N]C=NC(N)=C43)[C]12 ,2 [O]C(=O)[C]1C=NN=C1 ,2 [O]C(=O)C1=C[N]N=C1 ,1 NC1=C2[N]C=[N]=C2[N]C=N1 ,1 NC1=NC=[N]=C2C1=NC=N2 ,2 [O]C(=O)C1=CN=N[CH]1. Metal clusters: 4 O.O=[C]O[Zn]1[N][N][Zn][N][N]1 ,1 O=[C]O[Zn]O[C]=O. The MOF has largest included sphere 6.96 A, density 0.95 g/cm3, surface area 4101.73 m2/g, accessible volume 0.68 cm3/g