AlC8H5O5 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(5), one O(6), one O(7), one O(8), and two equivalent O(1) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 54°. The Al(1)-O(5) bond length is 1.91 Å. The Al(1)-O(6) bond length is 1.94 Å. The Al(1)-O(7) bond length is 1.94 Å. The Al(1)-O(8) bond length is 1.92 Å. Both Al(1)-O(1) bond lengths are 1.86 Å. In the second Al site, Al(2) is bonded to two equivalent O(10), two equivalent O(2), and two equivalent O(4) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 54°. Both Al(2)-O(10) bond lengths are 1.94 Å. Both Al(2)-O(2) bond lengths are 1.86 Å. Both Al(2)-O(4) bond lengths are 1.92 Å. In the third Al site, Al(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(9) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 54°. Both Al(3)-O(2) bond lengths are 1.86 Å. Both Al(3)-O(3) bond lengths are 1.94 Å. Both Al(3)-O(9) bond lengths are 1.92 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-C(7) bond length is 1.49 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 H(1,3,7) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-H(1,3,7) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2); one C(4); and one H(2,6) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(2,6) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(8) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-C(8) bond length is 1.49 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4); one C(6); and one H(1,3,7) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(1,3,7) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(1), one C(5), and one H(4) atom. The C(6)-H(4) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(3), and one O(4) atom. The C(7)-O(3) bond length is 1.27 Å. The C(7)-O(4) bond length is 1.28 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(5), and one O(6) atom. The C(8)-O(5) bond length is 1.28 Å. The C(8)-O(6) bond length is 1.27 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(15) atom. The C(9)-C(10) bond length is 1.40 Å. The C(9)-C(14) bond length is 1.40 Å. The C(9)-C(15) bond length is 1.49 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(11), one C(9), and one H(5) atom. The C(10)-C(11) bond length is 1.39 Å. The C(10)-H(5) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10); one C(12); and one H(2,6) atom. The C(11)-C(12) bond length is 1.40 Å. The C(11)-H(2,6) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(16) atom. The C(12)-C(13) bond length is 1.40 Å. The C(12)-C(16) bond length is 1.49 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(12); one C(14); and one H(1,3,7) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-H(1,3,7) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(13), one C(9), and one H(8) atom. The C(14)-H(8) bond length is 1.09 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(7), and one O(8) atom. The C(15)-O(7) bond length is 1.27 Å. The C(15)-O(8) bond length is 1.28 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(12), one O(10), and one O(9) atom. The C(16)-O(10) bond length is 1.27 Å. The C(16)-O(9) bond length is 1.28 Å. There are seven inequivalent H sites. In the first H site, H(1,3,7) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2,6) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(8) is bonded in a single-bond geometry to one C(14) atom. In the sixth H site, H(9) is bonded in a single-bond geometry to one O(1) atom. The H(9)-O(1) bond length is 0.97 Å. In the seventh H site, H(10) is bonded in a single-bond geometry to one O(2) atom. The H(10)-O(2) bond length is 0.97 Å. There are ten inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one Al(1) and one C(8) atom. In the second O site, O(6) is bonded in a bent 120 degrees geometry to one Al(1) and one C(8) atom. In the third O site, O(7) is bonded in a bent 120 degrees geometry to one Al(1) and one C(15) atom. In the fourth O site, O(8) is bonded in a bent 120 degrees geometry to one Al(1) and one C(15) atom. In the fifth O site, O(9) is bonded in a bent 120 degrees geometry to one Al(3) and one C(16) atom. In the sixth O site, O(10) is bonded in a bent 120 degrees geometry to one Al(2) and one C(16) atom. In the seventh O site, O(1) is bonded in a trigonal planar geometry to two equivalent Al(1) and one H(9) atom. In the eighth O site, O(2) is bonded in a trigonal planar geometry to one Al(2), one Al(3), and one H(10) atom. In the ninth O site, O(3) is bonded in a bent 120 degrees geometry to one Al(3) and one C(7) atom. In the tenth O site, O(4) is bonded in a bent 120 degrees geometry to one Al(2) and one C(7) atom. Linkers: 8 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 8 [Al]. The MOF has largest included sphere 1.84 A, density 1.69 g/cm3, surface area 3686.52 m2/g, accessible volume 0.18 cm3/g