Zn7C21H12(N3O2)4 crystallizes in the cubic P2_13 space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(4) atom. The Zn(1)-O(1) bond length is 1.94 Å. The Zn(1)-O(2) bond length is 1.93 Å. The Zn(1)-O(4) bond length is 1.97 Å. In the second Zn site, Zn(2) is bonded to one N(1), one N(3), one N(4), and one O(3) atom to form corner-sharing ZnN3O trigonal pyramids. The Zn(2)-N(1) bond length is 2.03 Å. The Zn(2)-N(3) bond length is 2.10 Å. The Zn(2)-N(4) bond length is 2.05 Å. The Zn(2)-O(3) bond length is 1.94 Å. In the third Zn site, Zn(3) is bonded to three equivalent N(2) and one O(3) atom to form corner-sharing ZnN3O trigonal pyramids. All Zn(3)-N(2) bond lengths are 2.05 Å. The Zn(3)-O(3) bond length is 2.02 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one N(2), and one H(1) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-N(2) bond length is 1.32 Å. The C(1)-H(1) bond length is 0.95 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(4) bond length is 1.43 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(3)-O(1) bond length is 1.24 Å. The C(3)-O(2) bond length is 1.10 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(2) atom. The C(4)-N(1) bond length is 1.34 Å. The C(4)-H(2) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(7), one N(3), and one H(3) atom. The C(5)-C(7) bond length is 1.18 Å. The C(5)-N(3) bond length is 1.22 Å. The C(5)-H(3) bond length is 0.95 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(7), one N(4), and one H(4) atom. The C(6)-C(7) bond length is 1.45 Å. The C(6)-N(4) bond length is 1.52 Å. The C(6)-H(4) bond length is 0.95 Å. In the seventh C site, C(7) is bonded in a distorted L-shaped geometry to one C(5) and one C(6) atom. There are four inequivalent N sites. In the first N site, N(1) is bonded in a 2-coordinate geometry to one Zn(2) and one C(4) atom. In the second N site, N(2) is bonded in a 2-coordinate geometry to one Zn(3) and one C(1) atom. In the third N site, N(3) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(5) atom. In the fourth N site, N(4) is bonded in a 2-coordinate geometry to one Zn(2) and one C(6) 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 C(4) 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(6) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Zn(1) and one C(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Zn(1) and one C(3) atom. In the third O site, O(3) is bonded in a tetrahedral geometry to one Zn(3) and three equivalent Zn(2) atoms. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to three equivalent Zn(1) atoms. Linkers: 12 [C]1[CH][N][N][CH]1 ,12 [O]C(=O)[C]1[CH][N][N][CH]1. Metal clusters: 4 [C]1O[Zn]O[C]O[Zn]2O[C]O[Zn](O1)O2 ,4 [N]1[N][Zn]2[N][N][Zn@]34[N][N][Zn]1[N][N][Zn@]([N][N]2)(N=N3)O4. The MOF has largest included sphere 10.58 A, density 0.83 g/cm3, surface area 3456.83 m2/g, accessible volume 0.77 cm3/g