InH8(C2O)8 crystallizes in the triclinic P1 space group. In(1,2,3) is bonded in a distorted hexagonal bipyramidal geometry to four equivalent O(1,5,7,11,15,17,21,23) and four equivalent O(2,6,8,12,16,18,22,24) atoms. All In(1,2,3)-O(1,5,7,11,15,17,21,23) bond lengths are 2.27 Å. All In(1,2,3)-O(2,6,8,12,16,18,22,24) bond lengths are 2.28 Å. There are ten inequivalent C sites. In the first C site, C(1,5,9,17,21,25,29,37,41,45) is bonded in a bent 120 degrees geometry to one C(2,6,10,14,18,22,34); one O(1,5,7,11,15,17,21,23); and one O(2,6,8,12,16,18,22,24) atom. The C(1,5,9,17,21,25,29,37,41,45)-C(2,6,10,14,18,22,34) bond length is 1.53 Å. The C(1,5,9,17,21,25,29,37,41,45)-O(1,5,7,11,15,17,21,23) bond length is 1.32 Å. The C(1,5,9,17,21,25,29,37,41,45)-O(2,6,8,12,16,18,22,24) bond length is 1.21 Å. In the second C site, C(2,6,10,14,18,22,34) is bonded in a trigonal planar geometry to one C(1,5,9,17,21,25,29,37,41,45); one C(3,7,11,19,23); and one C(4,8,12,20,24,28,32,40,44,48) atom. The C(2,6,10,14,18,22,34)-C(3,7,11,19,23) bond length is 1.36 Å. The C(2,6,10,14,18,22,34)-C(4,8,12,20,24,28,32,40,44,48) bond length is 1.43 Å. In the third C site, C(3,7,11,19,23) is bonded in a distorted trigonal planar geometry to one C(2,6,10,14,18,22,34); one C(27,31,39,43,47); and one H(1,3,5,7,9,11,17) atom. The C(3,7,11,19,23)-C(27,31,39,43,47) bond length is 1.40 Å. The C(3,7,11,19,23)-H(1,3,5,7,9,11,17) bond length is 1.14 Å. In the fourth C site, C(4,8,12,20,24,28,32,40,44,48) is bonded in a distorted single-bond geometry to one C(2,6,10,14,18,22,34) and one H(2,4,6,8,10,12,18) atom. The C(4,8,12,20,24,28,32,40,44,48)-H(2,4,6,8,10,12,18) bond length is 1.14 Å. In the fifth C site, C(13,33) is bonded in a bent 120 degrees geometry to one C(2,6,10,14,18,22,34); one O(1,5,7,11,15,17,21,23); and one O(2,6,8,12,16,18,22,24) atom. The C(13,33)-C(2,6,10,14,18,22,34) bond length is 1.53 Å. The C(13,33)-O(1,5,7,11,15,17,21,23) bond length is 1.32 Å. The C(13,33)-O(2,6,8,12,16,18,22,24) bond length is 1.21 Å. In the sixth C site, C(15,35) is bonded in a distorted trigonal planar geometry to one C(15,35); one C(2,6,10,14,18,22,34); and one H(1,3,5,7,9,11,17) atom. The C(15,35)-C(15,35) bond length is 1.40 Å. The C(15,35)-C(2,6,10,14,18,22,34) bond length is 1.36 Å. The C(15,35)-H(1,3,5,7,9,11,17) bond length is 1.14 Å. In the seventh C site, C(16,36) is bonded in a distorted single-bond geometry to one C(2,6,10,14,18,22,34) and one H(2,4,6,8,10,12,18) atom. The C(16,36)-C(2,6,10,14,18,22,34) bond length is 1.43 Å. The C(16,36)-H(2,4,6,8,10,12,18) bond length is 1.14 Å. In the eighth C site, C(26) is bonded in a trigonal planar geometry to one C(1,5,9,17,21,25,29,37,41,45); one C(27,31,39,43,47); and one C(4,8,12,20,24,28,32,40,44,48) atom. The C(26)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.53 Å. The C(26)-C(27,31,39,43,47) bond length is 1.36 Å. The C(26)-C(4,8,12,20,24,28,32,40,44,48) bond length is 1.43 Å. In the ninth C site, C(27,31,39,43,47) is bonded in a distorted trigonal planar geometry to one C(26); one C(3,7,11,19,23); and one H(13,15,19,21,23) atom. The C(27,31,39,43,47)-H(13,15,19,21,23) bond length is 1.14 Å. In the tenth C site, C(30,38,42,46) is bonded in a trigonal planar geometry to one C(1,5,9,17,21,25,29,37,41,45); one C(27,31,39,43,47); and one C(4,8,12,20,24,28,32,40,44,48) atom. The C(30,38,42,46)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.53 Å. The C(30,38,42,46)-C(27,31,39,43,47) bond length is 1.36 Å. The C(30,38,42,46)-C(4,8,12,20,24,28,32,40,44,48) bond length is 1.43 Å. There are four inequivalent H sites. In the first H site, H(1,3,5,7,9,11,17) is bonded in a single-bond geometry to one C(3,7,11,19,23) atom. In the second H site, H(2,4,6,8,10,12,18) is bonded in a single-bond geometry to one C(4,8,12,20,24,28,32,40,44,48) atom. In the third H site, H(13,15,19,21,23) is bonded in a single-bond geometry to one C(27,31,39,43,47) atom. In the fourth H site, H(14,16,20,22,24) is bonded in a single-bond geometry to one C(4,8,12,20,24,28,32,40,44,48) atom. The H(14,16,20,22,24)-C(4,8,12,20,24,28,32,40,44,48) bond length is 1.14 Å. There are ten inequivalent O sites. In the first O site, O(1,5,7,11,15,17,21,23) is bonded in an L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. In the second O site, O(2,6,8,12,16,18,22,24) is bonded in a distorted L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(3)-In(1,2,3) bond length is 2.27 Å. The O(3)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.32 Å. In the fourth O site, O(4) is bonded in a distorted L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(4)-In(1,2,3) bond length is 2.28 Å. The O(4)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.21 Å. In the fifth O site, O(9) is bonded in an L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(9)-In(1,2,3) bond length is 2.27 Å. The O(9)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.32 Å. In the sixth O site, O(10) is bonded in a distorted L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(10)-In(1,2,3) bond length is 2.28 Å. The O(10)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.21 Å. In the seventh O site, O(13) is bonded in an L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(13)-In(1,2,3) bond length is 2.27 Å. The O(13)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.32 Å. In the eighth O site, O(14) is bonded in a distorted L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(14)-In(1,2,3) bond length is 2.28 Å. The O(14)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.21 Å. In the ninth O site, O(19) is bonded in an L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(19)-In(1,2,3) bond length is 2.27 Å. The O(19)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.32 Å. In the tenth O site, O(20) is bonded in a distorted L-shaped geometry to one In(1,2,3) and one C(1,5,9,17,21,25,29,37,41,45) atom. The O(20)-In(1,2,3) bond length is 2.28 Å. The O(20)-C(1,5,9,17,21,25,29,37,41,45) bond length is 1.21 Å. Linkers: 6 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 3 O=[C]O[In](O[C]=O)O[C]=O.[O][C]=O. RCSR code: qtz. The MOF has largest included sphere 7.04 A, density 0.93 g/cm3, surface area 3928.78 m2/g, accessible volume 0.68 cm3/g