AlC7H4O5CH3CO crystallizes in the tetragonal I4_1/a space group. The structure consists of sixteen dimethyl ether molecules inside a AlC7H4O5 framework. In the AlC7H4O5 framework, Al(1) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(5) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 52°. The Al(1)-O(1) bond length is 1.85 Å. The Al(1)-O(2) bond length is 1.81 Å. The Al(1)-O(3) bond length is 1.98 Å. The Al(1)-O(4) bond length is 1.93 Å. There is one shorter (1.83 Å) and one longer (1.88 Å) Al(1)-O(5) bond length. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(6) atom. The C(1)-C(3) bond length is 1.51 Å. The C(1)-C(5) bond length is 1.36 Å. The C(1)-C(6) bond length is 1.45 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(8) and one H(4) atom. The C(2)-C(8) bond length is 1.42 Å. The C(2)-H(4) bond length is 1.14 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(4) atom. The C(3)-O(1) bond length is 1.25 Å. The C(3)-O(4) bond length is 1.26 Å. In the fourth C site, C(5) is bonded in a distorted single-bond geometry to one C(1) and one H(6) atom. The C(5)-H(6) bond length is 1.14 Å. In the fifth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(8), and one H(5) atom. The C(6)-C(8) bond length is 1.35 Å. The C(6)-H(5) bond length is 1.14 Å. In the sixth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(2), and one O(3) atom. The C(7)-C(8) bond length is 1.57 Å. The C(7)-O(2) bond length is 1.27 Å. The C(7)-O(3) bond length is 1.27 Å. In the seventh C site, C(8) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. There are four inequivalent H sites. In the first H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(5) is bonded in a single-bond geometry to one C(6) atom. In the third H site, H(6) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(7) is bonded in a single-bond geometry to one O(5) atom. The H(7)-O(5) bond length is 1.13 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Al(1) and one C(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Al(1) and one C(7) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Al(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Al(1) and one C(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to two equivalent Al(1) and one H(7) atom. Linkers: 16 COc1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 16 [Al]. The MOF has largest included sphere 5.90 A, density 1.31 g/cm3, surface area 4093.69 m2/g, accessible volume 0.40 cm3/g