Al2C11(NO2)4 crystallizes in the trigonal R-3m space group. Al(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form edge-sharing AlO6 octahedra. The Al(1)-O(1) bond length is 2.00 Å. The Al(1)-O(2) bond length is 1.80 Å. The Al(1)-O(4) bond length is 1.75 Å. The Al(1)-O(5) bond length is 2.00 Å. There is one shorter (1.70 Å) and one longer (1.88 Å) Al(1)-O(3) bond length. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(1), one C(5), and one N(1) atom. The C(1)-C(1) bond length is 1.37 Å. The C(1)-C(5) bond length is 1.39 Å. The C(1)-N(1) bond length is 1.55 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(2), one C(8), and one N(2) atom. The C(2)-C(2) bond length is 1.29 Å. The C(2)-C(8) bond length is 1.33 Å. The C(2)-N(2) bond length is 1.52 Å. In the third C site, C(3) is bonded in a single-bond geometry to one O(3) atom. The C(3)-O(3) bond length is 1.36 Å. In the fourth C site, C(4) is bonded in a bent 120 degrees geometry to one C(5) and two equivalent O(1) atoms. The C(4)-C(5) bond length is 1.60 Å. Both C(4)-O(1) bond lengths are 1.23 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4) and two equivalent C(1) atoms. In the sixth C site, C(6) is bonded in a single-bond geometry to one O(4) atom. The C(6)-O(4) bond length is 1.31 Å. In the seventh C site, C(7) is bonded in a water-like geometry to one C(8) and two equivalent O(2) atoms. The C(7)-C(8) bond length is 1.53 Å. Both C(7)-O(2) bond lengths are 1.40 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a single-bond geometry to one C(1) atom. In the second N site, N(2) is bonded in a single-bond geometry to one C(2) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Al(1) and one C(4) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Al(1) and one C(7) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Al(1) and one C(3) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to two equivalent Al(1) and one C(6) atom. In the fifth O site, O(5) is bonded in an L-shaped geometry to two equivalent Al(1) atoms. Linkers: 18 [N]c1c([N])c(C([O])=O)c([N])c([N])c1C([O])=O. Metal clusters: 36 [Al]. The MOF has largest included sphere 10.88 A, density 0.84 g/cm3, surface area 3831.60 m2/g, accessible volume 0.81 cm3/g