In(C7O2)4 crystallizes in the orthorhombic I2_12_12_1 space group. In(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both In(1)-O(1) bond lengths are 2.24 Å. Both In(1)-O(2) bond lengths are 2.39 Å. Both In(1)-O(3) bond lengths are 2.37 Å. Both In(1)-O(4) bond lengths are 2.22 Å. There are fourteen inequivalent C sites. In the first C site, C(1) is bonded in a 5-coordinate geometry to one C(2), one C(3), one C(7), and two equivalent C(4) atoms. The C(1)-C(2) bond length is 1.53 Å. The C(1)-C(3) bond length is 1.51 Å. The C(1)-C(7) bond length is 1.51 Å. There is one shorter (1.53 Å) and one longer (1.59 Å) C(1)-C(4) bond length. In the second C site, C(2) is bonded in a distorted L-shaped geometry to one C(1) and one C(3) atom. The C(2)-C(3) bond length is 1.83 Å. In the third C site, C(3) is bonded in a 3-coordinate geometry to one C(1), one C(2), and one C(4) atom. The C(3)-C(4) bond length is 1.91 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(4), one C(5), one C(6), and two equivalent C(1) atoms. The C(4)-C(4) bond length is 0.83 Å. The C(4)-C(5) bond length is 1.28 Å. The C(4)-C(6) bond length is 1.50 Å. In the fifth C site, C(5) is bonded in a distorted L-shaped geometry to one C(4) and one C(5) atom. The C(5)-C(5) bond length is 0.94 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(4) atom. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.29 Å. The C(7)-O(2) bond length is 1.25 Å. In the eighth C site, C(8) is bonded in a 5-coordinate geometry to one C(13), one C(14), one C(9), and two equivalent C(10) atoms. The C(8)-C(13) bond length is 1.57 Å. The C(8)-C(14) bond length is 1.52 Å. The C(8)-C(9) bond length is 1.52 Å. There is one shorter (1.57 Å) and one longer (1.61 Å) C(8)-C(10) bond length. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(8) atom. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(10), one C(11), one C(12), and two equivalent C(8) atoms. The C(10)-C(10) bond length is 0.87 Å. The C(10)-C(11) bond length is 1.50 Å. The C(10)-C(12) bond length is 1.32 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(10) atom. In the twelfth C site, C(12) is bonded in a distorted L-shaped geometry to one C(10) and one C(12) atom. The C(12)-C(12) bond length is 0.79 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(8) atom. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(3), and one O(4) atom. The C(14)-O(3) bond length is 1.26 Å. The C(14)-O(4) bond length is 1.27 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one In(1) and one C(7) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one In(1) and one C(7) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one In(1) and one C(14) atom. In the fourth O site, O(4) is bonded in a distorted L-shaped geometry to one In(1) and one C(14) atom. Linkers: 4 [C][C@]12[C][C]3[C][C@]31[C@]1(C([O])=O)[C][C][C@@]2(C([O])=O)[C][C]1 ,1 [C]C([C])(C([O])=O)[C@]1([C])[C][C][C@@]1([C])C([C])([C])C([O])=O ,2 [C]1[C]2[C]1[C]1[C][C]21.[C][C]([C])C([O])=O.[C][C]([C])C([O])=O ,1 [C][C]([C])C([O])=O.[C][C]1[C][C]2[C][C@]12C([C])([C])C([O])=O. Metal clusters: 4 O=[C]O[In](O[C]=O)O[C]=O.[O][C]=O. RCSR code: dia. The MOF has largest included sphere 5.07 A, density 1.10 g/cm3, surface area 3806.64 m2/g, accessible volume 0.48 cm3/g