ZnC18H12(NO2)2 crystallizes in the trigonal R-3m space group. Zn(1) is bonded in a distorted square pyramidal geometry to one N(1), two equivalent O(1), and two equivalent O(2) atoms. The Zn(1)-N(1) bond length is 2.02 Å. Both Zn(1)-O(1) bond lengths are 2.03 Å. Both Zn(1)-O(2) bond lengths are 2.04 Å. There are eleven inequivalent C sites. In the first C site, C(8) is bonded in a distorted trigonal planar geometry to two equivalent C(6) and one N(2) atom. Both C(8)-C(6) bond lengths are 1.22 Å. The C(8)-N(2) bond length is 1.52 Å. In the second C site, C(9) is bonded in a distorted single-bond geometry to two equivalent C(3) and one H(6) atom. Both C(9)-C(3) bond lengths are 1.38 Å. The C(9)-H(6) bond length is 0.93 Å. In the third C site, C(10) is bonded in a trigonal planar geometry to one C(11) and two equivalent C(2) atoms. The C(10)-C(11) bond length is 1.50 Å. Both C(10)-C(2) bond lengths are 1.39 Å. In the fourth C site, C(11) is bonded in a single-bond geometry to one C(10), two equivalent C(7), and one H(7) atom. Both C(11)-C(7) bond lengths are 1.45 Å. The C(11)-H(7) bond length is 0.98 Å. In the fifth C site, C(1) is bonded in a bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(1)-C(3) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.23 Å. In the sixth C site, C(2) is bonded in a distorted single-bond geometry to one C(10), one C(3), and one H(1) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-H(1) bond length is 0.93 Å. In the seventh C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(9) atom. In the eighth C site, C(4) is bonded in a distorted L-shaped geometry to two equivalent C(7), one H(5), and one H(7) atom. There is one shorter (1.30 Å) and one longer (1.45 Å) C(4)-C(7) bond length. The C(4)-H(5) bond length is 0.98 Å. The C(4)-H(7) bond length is 1.14 Å. In the ninth C site, C(5) is bonded in a 3-coordinate geometry to one C(6), one N(1), and one H(2) atom. The C(5)-C(6) bond length is 1.37 Å. The C(5)-N(1) bond length is 1.34 Å. The C(5)-H(2) bond length is 0.93 Å. In the tenth C site, C(6) is bonded in a distorted single-bond geometry to one C(5), one C(8), and one H(3) atom. The C(6)-H(3) bond length is 0.93 Å. In the eleventh C site, C(7) is bonded in a 4-coordinate geometry to one C(11), two equivalent C(4), and one H(4) atom. The C(7)-H(4) bond length is 1.06 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) and two equivalent C(5) atoms. In the second N site, N(2) is bonded in a single-bond geometry to one C(8) atom. 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(5) 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(7) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(4) 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 distorted trigonal planar geometry to one C(11) and two equivalent C(4) atoms. 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(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(1) atom. Linkers: 2 [CH][C@H]1[CH][CH][C@H]2[C@@H]3[C@H]2[C@H]2[C@@H]3[C@H]21.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,1 [CH][C@H]1[CH][CH][C@H]2[CH][C@H]2[C@H]2[CH][C@H]21.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,1 [CH][C@@H]1[CH][CH][C@H]2[CH][C@H]2[C@H]2[CH][C@H]21.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,1 [CH][C@@H]1[C@@H]2[CH][C@@H]2[C@H]2[CH][C@@H]3[C@H]2[C@H]13.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,1 [CH][CH][C@H]1[C@@H]2[C@H]1[C@@H]1[C@H]([CH][CH])[C@H]21.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,1 [CH]1[C@H]2[CH][C@@H]1[C@@H]1[C@@H]3[C@@H]4[C@H]2[C@@H]4[C@H]13.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,1 [CH][CH][C@@H]1[CH][C@@H]1[C@@H]1[C@@H]2[CH][CH][C@@H]21.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,1 [CH]1[CH][C@H]2[C@H]3[CH][C@@H]([C@H]4[CH][C@@H]14)[C@H]32.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1. Metal clusters: 18 [Zn]. The MOF has largest included sphere 11.26 A, density 0.97 g/cm3, surface area 3754.10 m2/g, accessible volume 0.71 cm3/g