AlC8O5 crystallizes in the monoclinic P2_1 space group. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(11), one O(17), one O(2), one O(3), and one O(5) atom to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles range from 47-57°. The Al(1)-O(1) bond length is 1.98 Å. The Al(1)-O(11) bond length is 1.92 Å. The Al(1)-O(17) bond length is 1.86 Å. The Al(1)-O(2) bond length is 1.89 Å. The Al(1)-O(3) bond length is 1.97 Å. The Al(1)-O(5) bond length is 1.85 Å. In the second Al site, Al(2) is bonded to one O(15), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. The Al(2)-O(15) bond length is 1.98 Å. The Al(2)-O(5) bond length is 1.87 Å. The Al(2)-O(6) bond length is 1.84 Å. The Al(2)-O(7) bond length is 1.91 Å. The Al(2)-O(8) bond length is 1.90 Å. The Al(2)-O(9) bond length is 1.97 Å. In the third Al site, Al(3) is bonded to one O(12), one O(13), one O(14), one O(16), one O(4), and one O(6) atom to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles range from 45-56°. The Al(3)-O(12) bond length is 1.95 Å. The Al(3)-O(13) bond length is 1.88 Å. The Al(3)-O(14) bond length is 1.83 Å. The Al(3)-O(16) bond length is 1.84 Å. The Al(3)-O(4) bond length is 1.95 Å. The Al(3)-O(6) bond length is 1.82 Å. In the fourth Al site, Al(4) is bonded to one O(10), one O(16), one O(17), one O(18), one O(19), and one O(20) atom to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles range from 45-47°. The Al(4)-O(10) bond length is 1.95 Å. The Al(4)-O(16) bond length is 1.80 Å. The Al(4)-O(17) bond length is 1.84 Å. The Al(4)-O(18) bond length is 1.95 Å. The Al(4)-O(19) bond length is 1.99 Å. The Al(4)-O(20) bond length is 1.84 Å. There are thirty-two inequivalent C sites. In the first C site, C(1) is bonded in a water-like geometry to one C(2) and one C(5) atom. The C(1)-C(2) bond length is 1.52 Å. The C(1)-C(5) bond length is 1.53 Å. In the second C site, C(2) is bonded in a water-like geometry to one C(1) and one C(6) atom. The C(2)-C(6) bond length is 1.52 Å. In the third C site, C(3) is bonded in a water-like geometry to one C(4) and one C(6) atom. The C(3)-C(4) bond length is 1.52 Å. The C(3)-C(6) bond length is 1.53 Å. In the fourth C site, C(4) is bonded in a bent 120 degrees geometry to one C(3) and one C(5) atom. The C(4)-C(5) bond length is 1.53 Å. In the fifth C site, C(5) is bonded in a trigonal non-coplanar geometry to one C(1), one C(4), and one C(7) atom. The C(5)-C(7) bond length is 1.50 Å. In the sixth C site, C(6) is bonded in a trigonal non-coplanar geometry to one C(2), one C(3), and one C(8) atom. The C(6)-C(8) bond length is 1.50 Å. In the seventh C site, C(7) is bonded in a bent 120 degrees geometry to one C(5), one O(4), and one O(7) atom. The C(7)-O(4) bond length is 1.29 Å. The C(7)-O(7) 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(6), one O(10), and one O(2) atom. The C(8)-O(10) bond length is 1.30 Å. The C(8)-O(2) bond length is 1.28 Å. In the ninth C site, C(9) is bonded in a bent 120 degrees geometry to one C(10) and one C(13) atom. The C(9)-C(10) bond length is 1.52 Å. The C(9)-C(13) bond length is 1.53 Å. In the tenth C site, C(10) is bonded in a water-like geometry to one C(14) and one C(9) atom. The C(10)-C(14) bond length is 1.53 Å. In the eleventh C site, C(11) is bonded in a water-like geometry to one C(12) and one C(14) atom. The C(11)-C(12) bond length is 1.53 Å. The C(11)-C(14) bond length is 1.52 Å. In the twelfth C site, C(12) is bonded in a water-like geometry to one C(11) and one C(13) atom. The C(12)-C(13) bond length is 1.54 Å. In the thirteenth C site, C(13) is bonded in a trigonal non-coplanar geometry to one C(12), one C(15), and one C(9) atom. The C(13)-C(15) bond length is 1.51 Å. In the fourteenth C site, C(14) is bonded in a trigonal non-coplanar geometry to one C(10), one C(11), and one C(16) atom. The C(14)-C(16) bond length is 1.51 Å. In the fifteenth C site, C(15) is bonded in a distorted water-like geometry to one C(13), one O(1), and one O(9) atom. The C(15)-O(1) bond length is 1.28 Å. The C(15)-O(9) bond length is 1.28 Å. In the sixteenth C site, C(16) is bonded in a bent 120 degrees geometry to one C(14), one O(3), and one O(8) atom. The C(16)-O(3) bond length is 1.21 Å. The C(16)-O(8) bond length is 1.27 Å. In the seventeenth C site, C(17) is bonded in a water-like geometry to one C(18) and one C(21) atom. The C(17)-C(18) bond length is 1.52 Å. The C(17)-C(21) bond length is 1.53 Å. In the eighteenth C site, C(18) is bonded in a water-like geometry to one C(17) and one C(22) atom. The C(18)-C(22) bond length is 1.52 Å. In the nineteenth C site, C(19) is bonded in a water-like geometry to one C(20) and one C(22) atom. The C(19)-C(20) bond length is 1.52 Å. The C(19)-C(22) bond length is 1.53 Å. In the twentieth C site, C(20) is bonded in a bent 120 degrees geometry to one C(19) and one C(21) atom. The C(20)-C(21) bond length is 1.53 Å. In the twenty-first C site, C(21) is bonded in a trigonal non-coplanar geometry to one C(17), one C(20), and one C(23) atom. The C(21)-C(23) bond length is 1.50 Å. In the twenty-second C site, C(22) is bonded in a trigonal non-coplanar geometry to one C(18), one C(19), and one C(24) atom. The C(22)-C(24) bond length is 1.50 Å. In the twenty-third C site, C(23) is bonded in a distorted bent 120 degrees geometry to one C(21), one O(11), and one O(18) atom. The C(23)-O(11) bond length is 1.29 Å. The C(23)-O(18) bond length is 1.28 Å. In the twenty-fourth C site, C(24) is bonded in a distorted bent 120 degrees geometry to one C(22), one O(13), and one O(15) atom. The C(24)-O(13) bond length is 1.29 Å. The C(24)-O(15) bond length is 1.27 Å. In the twenty-fifth C site, C(25) is bonded in a bent 120 degrees geometry to one C(26) and one C(29) atom. The C(25)-C(26) bond length is 1.52 Å. The C(25)-C(29) bond length is 1.53 Å. In the twenty-sixth C site, C(26) is bonded in a water-like geometry to one C(25) and one C(30) atom. The C(26)-C(30) bond length is 1.53 Å. In the twenty-seventh C site, C(27) is bonded in a water-like geometry to one C(28) and one C(30) atom. The C(27)-C(28) bond length is 1.53 Å. The C(27)-C(30) bond length is 1.52 Å. In the twenty-eighth C site, C(28) is bonded in a water-like geometry to one C(27) and one C(29) atom. The C(28)-C(29) bond length is 1.54 Å. In the twenty-ninth C site, C(29) is bonded in a trigonal non-coplanar geometry to one C(25), one C(28), and one C(31) atom. The C(29)-C(31) bond length is 1.51 Å. In the thirtieth C site, C(30) is bonded in a trigonal non-coplanar geometry to one C(26), one C(27), and one C(32) atom. The C(30)-C(32) bond length is 1.51 Å. In the thirty-first C site, C(31) is bonded in a bent 120 degrees geometry to one C(29), one O(12), and one O(20) atom. The C(31)-O(12) bond length is 1.27 Å. The C(31)-O(20) bond length is 1.27 Å. In the thirty-second C site, C(32) is bonded in a distorted bent 120 degrees geometry to one C(30), one O(14), and one O(19) atom. The C(32)-O(14) bond length is 1.28 Å. The C(32)-O(19) bond length is 1.29 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Al(1) and one C(15) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Al(1) and one C(8) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Al(1) and one C(16) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Al(3) and one C(7) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Al(1) and one Al(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Al(2) and one Al(3) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Al(2) and one C(7) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Al(2) and one C(16) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Al(2) and one C(15) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Al(4) and one C(8) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Al(1) and one C(23) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Al(3) and one C(31) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Al(3) and one C(24) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Al(3) and one C(32) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Al(2) and one C(24) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 150 degrees geometry to one Al(3) and one Al(4) atom. In the seventeenth O site, O(17) is bonded in a bent 120 degrees geometry to one Al(1) and one Al(4) atom. In the eighteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Al(4) and one C(23) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Al(4) and one C(32) atom. In the twentieth O site, O(20) is bonded in a bent 120 degrees geometry to one Al(4) and one C(31) atom. Linkers: 6 [O]C(=O)[C]1[C][C][C](C([O])=O)[C][C]1 ,2 [O][C]([O])[C]1[C][C][C](C([O])=O)[C][C]1. Metal clusters: 8 [Al]. RCSR code: lvt. The MOF has largest included sphere 5.78 A, density 1.03 g/cm3, surface area 3937.59 m2/g, accessible volume 0.54 cm3/g