FeH36(C17N)4(InH8(C2O)8)2 is Fluorite structured and crystallizes in the orthorhombic Pnnm space group. The structure is zero-dimensional and consists of two FeH36(C17N)4 clusters and four InH8(C2O)8 clusters. In each FeH36(C17N)4 cluster, Fe(1) is bonded in a square co-planar geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Fe(1)-N(1) bond lengths are 2.02 Å. Both Fe(1)-N(2) bond lengths are 2.01 Å. There are seventeen inequivalent C sites. In the first C site, C(19) is bonded in a distorted single-bond geometry to one C(8), one C(9), and one H(9) atom. The C(19)-C(8) bond length is 1.40 Å. The C(19)-C(9) bond length is 1.40 Å. The C(19)-H(9) bond length is 0.93 Å. In the second C site, C(20) is bonded in a distorted single-bond geometry to one C(7) and one H(6,10) atom. The C(20)-C(7) bond length is 1.42 Å. The C(20)-H(6,10) bond length is 0.93 Å. In the third C site, C(21) is bonded in a distorted single-bond geometry to one C(5) and one H(11) atom. The C(21)-C(5) bond length is 1.41 Å. The C(21)-H(11) bond length is 0.93 Å. In the fourth C site, C(23) is bonded in a distorted single-bond geometry to one C(14) and one H(13) atom. The C(23)-C(14) bond length is 1.40 Å. The C(23)-H(13) bond length is 0.93 Å. In the fifth C site, C(2) is bonded in a trigonal planar geometry to one C(14), one C(5), and one C(9) atom. The C(2)-C(14) bond length is 1.43 Å. The C(2)-C(5) bond length is 1.35 Å. The C(2)-C(9) bond length is 1.52 Å. In the sixth C site, C(4) is bonded in a trigonal planar geometry to one C(15), one C(18), and one C(8) atom. The C(4)-C(15) bond length is 1.37 Å. The C(4)-C(18) bond length is 1.40 Å. The C(4)-C(8) bond length is 1.48 Å. In the seventh C site, C(5) is bonded in a distorted trigonal planar geometry to one C(2), one C(21), and one N(1) atom. The C(5)-N(1) bond length is 1.39 Å. In the eighth C site, C(7) is bonded in a trigonal planar geometry to one C(10), one C(16), and one C(20) atom. The C(7)-C(10) bond length is 1.49 Å. The C(7)-C(16) bond length is 1.41 Å. In the ninth C site, C(8) is bonded in a trigonal planar geometry to one C(11), one C(19), and one C(4) atom. The C(8)-C(11) bond length is 1.37 Å. In the tenth C site, C(9) is bonded in a trigonal planar geometry to one C(12), one C(19), and one C(2) atom. The C(9)-C(12) bond length is 1.40 Å. In the eleventh C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(7) atom. The C(10)-C(11) bond length is 1.37 Å. The C(10)-C(12) bond length is 1.40 Å. In the twelfth C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10), one C(8), and one H(2) atom. The C(11)-H(2) bond length is 0.93 Å. In the thirteenth C site, C(12) is bonded in a distorted single-bond geometry to one C(10), one C(9), and one H(3) atom. The C(12)-H(3) bond length is 0.93 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(2), one C(23), and one N(2) atom. The C(14)-N(2) bond length is 1.37 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(4) and one H(5) atom. The C(15)-H(5) bond length is 0.93 Å. In the sixteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(7) and one H(6,10) atom. The C(16)-H(6,10) bond length is 0.93 Å. In the seventeenth C site, C(18) is bonded in a distorted single-bond geometry to one C(4) and one H(8) atom. The C(18)-H(8) bond length is 0.93 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Fe(1) and two equivalent C(5) atoms. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Fe(1) and two equivalent C(14) atoms. There are eight inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(11) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(12) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(15) atom. In the fourth H site, H(6,10) is bonded in a single-bond geometry to one C(16) atom. In the fifth H site, H(8) is bonded in a single-bond geometry to one C(18) atom. In the sixth H site, H(9) is bonded in a single-bond geometry to one C(19) atom. In the seventh H site, H(11) is bonded in a single-bond geometry to one C(21) atom. In the eighth H site, H(13) is bonded in a single-bond geometry to one C(23) atom. In each InH8(C2O)8 cluster, In(1) is bonded in a distorted hexagonal bipyramidal 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 2.28 Å. Both In(1)-O(2) bond lengths are 2.29 Å. Both In(1)-O(3) bond lengths are 2.28 Å. Both In(1)-O(4) bond lengths are 2.29 Å. There are eight inequivalent C sites. In the first C site, C(22) is bonded in a distorted single-bond geometry to one C(25) and one H(12) atom. The C(22)-C(25) bond length is 1.37 Å. The C(22)-H(12) bond length is 0.93 Å. In the second C site, C(24) is bonded in a bent 120 degrees geometry to one C(25), one O(3), and one O(4) atom. The C(24)-C(25) bond length is 1.54 Å. The C(24)-O(3) bond length is 1.26 Å. The C(24)-O(4) bond length is 1.25 Å. In the third C site, C(25) is bonded in a trigonal planar geometry to one C(13), one C(22), and one C(24) atom. The C(25)-C(13) bond length is 1.41 Å. In the fourth C site, C(1) is bonded in a bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(1)-C(3) bond length is 1.53 Å. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.26 Å. In the fifth C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(17), and one C(6) atom. The C(3)-C(17) bond length is 1.38 Å. The C(3)-C(6) bond length is 1.37 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(3) and one H(1) atom. The C(6)-H(1) bond length is 0.93 Å. In the seventh C site, C(13) is bonded in a distorted single-bond geometry to one C(25) and one H(4) atom. The C(13)-H(4) bond length is 0.93 Å. In the eighth C site, C(17) is bonded in a distorted single-bond geometry to one C(3) and one H(7) atom. The C(17)-H(7) bond length is 0.93 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(6) atom. In the second H site, H(4) is bonded in a single-bond geometry to one C(13) atom. In the third H site, H(7) is bonded in a single-bond geometry to one C(17) atom. In the fourth H site, H(12) is bonded in a single-bond geometry to one C(22) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in an L-shaped geometry to one In(1) and one C(1) atom. In the second O site, O(3) is bonded in an L-shaped geometry to one In(1) and one C(24) atom. In the third O site, O(4) is bonded in an L-shaped geometry to one In(1) and one C(24) atom. In the fourth O site, O(2) is bonded in an L-shaped geometry to one In(1) and one C(1) atom. Linkers: 4 [O]C(=O)c1ccc(cc1)c1cc(cc(c1)C1=C2C=CC3=[N]2[Fe@]24n5c1ccc5C(=C1[N]2=C(C=C1)C(=c1n4c(=C3c2cc(cc(c2)c2ccc(cc2)C(=O)[O])c2ccc(cc2)C(=O)[O])cc1)c1cc(cc(c1)c1ccc(cc1)C(=O)[O])c1ccc(cc1)C(=O)[O])c1cc(cc(c1)c1ccc(cc1)C(=O)[O])c1ccc(cc1)C(=O)[O])c1ccc(cc1)C(=O)[O]. Metal clusters: 4 O=[C]O[In](O[C]=O)O[C]=O.[O][C]=O. RCSR code: flu. The MOF has largest included sphere 18.42 A, density 0.35 g/cm3, surface area 4447.65 m2/g, accessible volume 2.55 cm3/g