InH18(C5O2)4(CH2)2CO2 is Indium-derived structured and crystallizes in the tetragonal P4_32_12 space group. The structure is zero-dimensional and consists of sixteen 02329_fluka molecules, eight formic acid molecules, and four InH18(C5O2)4 clusters. In each InH18(C5O2)4 cluster, In(1) is bonded in a distorted hexagonal bipyramidal geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(9) atom. The In(1)-O(1) bond length is 2.24 Å. The In(1)-O(10) bond length is 2.28 Å. The In(1)-O(2) bond length is 2.28 Å. The In(1)-O(3) bond length is 2.27 Å. The In(1)-O(4) bond length is 2.28 Å. The In(1)-O(5) bond length is 2.24 Å. The In(1)-O(6) bond length is 2.26 Å. The In(1)-O(9) bond length is 2.35 Å. There are twenty-one inequivalent C sites. In the first C site, C(1) is bonded in a single-bond geometry to one C(2) and one H(1) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-H(1) bond length is 0.98 Å. In the second C site, C(2) is bonded in a trigonal non-coplanar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.59 Å. The C(2)-C(7) bond length is 1.47 Å. In the third C site, C(3) is bonded in a tetrahedral geometry to one C(2), one C(4), one C(6), and one C(9) atom. The C(3)-C(4) bond length is 1.61 Å. The C(3)-C(6) bond length is 1.48 Å. The C(3)-C(9) bond length is 1.49 Å. In the fourth C site, C(4) is bonded in a water-like geometry to one C(3) and two equivalent H(2,3) atoms. Both C(4)-H(2,3) bond lengths are 0.97 Å. In the fifth C site, C(6) is bonded in a trigonal non-coplanar geometry to one C(3), one H(6), one H(7), and one H(8) atom. The C(6)-H(6) bond length is 0.96 Å. The C(6)-H(7) bond length is 0.96 Å. The C(6)-H(8) bond length is 0.96 Å. In the sixth C site, C(7) is bonded in a trigonal non-coplanar geometry to one C(2), one H(10), one H(11), and one H(9) atom. The C(7)-H(10) bond length is 0.96 Å. The C(7)-H(11) bond length is 0.96 Å. The C(7)-H(9) bond length is 0.96 Å. In the seventh C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(8)-O(1) bond length is 1.26 Å. The C(8)-O(2) bond length is 1.26 Å. In the eighth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(9)-O(3) bond length is 1.33 Å. The C(9)-O(4) bond length is 1.22 Å. In the ninth C site, C(10) is bonded in a tetrahedral geometry to one C(11), one C(14), one C(15), and one C(17) atom. The C(10)-C(11) bond length is 1.62 Å. The C(10)-C(14) bond length is 1.57 Å. The C(10)-C(15) bond length is 1.61 Å. The C(10)-C(17) bond length is 1.53 Å. In the tenth C site, C(11) is bonded in a trigonal non-coplanar geometry to one C(10), one C(12), and one C(16) atom. The C(11)-C(12) bond length is 1.49 Å. The C(11)-C(16) bond length is 1.47 Å. In the eleventh C site, C(12) is bonded in a single-bond geometry to one C(11) and one H(12) atom. The C(12)-H(12) bond length is 0.98 Å. In the twelfth C site, C(14) is bonded in a water-like geometry to one C(10) and two equivalent H(15,16) atoms. Both C(14)-H(15,16) bond lengths are 0.97 Å. In the thirteenth C site, C(15) is bonded in a trigonal non-coplanar geometry to one C(10), one H(17), one H(18), and one H(19) atom. The C(15)-H(17) bond length is 0.96 Å. The C(15)-H(18) bond length is 0.96 Å. The C(15)-H(19) bond length is 0.96 Å. In the fourteenth C site, C(16) is bonded in a trigonal non-coplanar geometry to one C(11), one H(20), one H(21), and one H(22) atom. The C(16)-H(20) bond length is 0.96 Å. The C(16)-H(21) bond length is 0.96 Å. The C(16)-H(22) bond length is 0.96 Å. In the fifteenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(5), and one O(6) atom. The C(17)-O(5) bond length is 1.23 Å. The C(17)-O(6) bond length is 1.24 Å. In the sixteenth C site, C(19) is bonded to one C(20), one C(21), one C(22), and one C(23) atom to form distorted corner-sharing CC4 tetrahedra. The C(19)-C(20) bond length is 1.66 Å. The C(19)-C(21) bond length is 1.50 Å. The C(19)-C(22) bond length is 1.45 Å. The C(19)-C(23) bond length is 1.52 Å. In the seventeenth C site, C(20) is bonded in a 2-coordinate geometry to one C(19) and one C(21) atom. The C(20)-C(21) bond length is 2.01 Å. In the eighteenth C site, C(21) is bonded in an L-shaped geometry to one C(19) and one C(20) atom. In the nineteenth C site, C(22) is bonded in a distorted bent 120 degrees geometry to one C(19), one O(10), and one O(9) atom. The C(22)-O(10) bond length is 1.26 Å. The C(22)-O(9) bond length is 1.24 Å. In the twentieth C site, C(23) is bonded in a trigonal planar geometry to one C(24) and two equivalent C(19) atoms. The C(23)-C(24) bond length is 1.21 Å. In the twenty-first C site, C(24) is bonded in a single-bond geometry to one C(23) atom. There are sixteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2,3) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(6) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(7) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(8) is bonded in a single-bond geometry to one C(6) atom. In the sixth H site, H(9) is bonded in a single-bond geometry to one C(7) atom. In the seventh H site, H(10) is bonded in a single-bond geometry to one C(7) atom. In the eighth H site, H(11) is bonded in a single-bond geometry to one C(7) atom. In the ninth H site, H(12) is bonded in a single-bond geometry to one C(12) atom. In the tenth H site, H(15,16) is bonded in a single-bond geometry to one C(14) atom. In the eleventh H site, H(17) is bonded in a single-bond geometry to one C(15) atom. In the twelfth H site, H(18) is bonded in a single-bond geometry to one C(15) atom. In the thirteenth H site, H(19) is bonded in a single-bond geometry to one C(15) atom. In the fourteenth H site, H(20) is bonded in a single-bond geometry to one C(16) atom. In the fifteenth H site, H(21) is bonded in a single-bond geometry to one C(16) atom. In the sixteenth H site, H(22) is bonded in a single-bond geometry to one C(16) atom. There are eight 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(8) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one In(1) and one C(8) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one In(1) and one C(9) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one In(1) and one C(9) atom. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to one In(1) and one C(17) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one In(1) and one C(17) atom. In the seventh O site, O(9) is bonded in a distorted L-shaped geometry to one In(1) and one C(22) atom. In the eighth O site, O(10) is bonded in a distorted L-shaped geometry to one In(1) and one C(22) atom. Linkers: 4 [C]C([C])(C(=[C])C([C])([C])C([O])=O)C([O])=O ,8 C[C]1[C@@H](C([O])=O)CC[C@@]1(C)C([O])=O. Metal clusters: 8 [In]. RCSR code: ths. The MOF has largest included sphere 5.43 A, density 1.05 g/cm3, surface area 4599.76 m2/g, accessible volume 0.49 cm3/g