U2H2(CO3)5(C3H4N2)3(C5H5N)2CO2 is Indium-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four formic acid molecules, four schembl5888836 molecules, four C3H4N2 clusters, and four U2H2(CO3)5 clusters. In each C3H4N2 cluster, there are nine inequivalent C sites. In the first C site, C(7) is bonded in a distorted trigonal non-coplanar geometry to one N(4); one H(1); and one H(2,7) atom. The C(7)-N(4) bond length is 1.45 Å. The C(7)-H(1) bond length is 1.10 Å. The C(7)-H(2,7) bond length is 1.10 Å. In the second C site, C(8) is bonded in a distorted trigonal non-coplanar geometry to one N(4), one H(3), and one H(4) atom. The C(8)-N(4) bond length is 1.45 Å. The C(8)-H(3) bond length is 1.10 Å. The C(8)-H(4) bond length is 1.10 Å. In the third C site, C(9) is bonded in a distorted trigonal non-coplanar geometry to one N(5), one H(5), and one H(6) atom. The C(9)-N(5) bond length is 1.45 Å. The C(9)-H(5) bond length is 1.10 Å. The C(9)-H(6) bond length is 1.10 Å. In the fourth C site, C(10) is bonded in a distorted trigonal non-coplanar geometry to one N(5); one H(2,7); and one H(8) atom. The C(10)-N(5) bond length is 1.45 Å. The C(10)-H(2,7) bond length is 1.10 Å. The C(10)-H(8) bond length is 1.10 Å. In the fifth C site, C(11) is bonded in a distorted trigonal non-coplanar geometry to one N(6), one H(10), and one H(9) atom. The C(11)-N(6) bond length is 1.45 Å. The C(11)-H(10) bond length is 1.10 Å. The C(11)-H(9) bond length is 1.10 Å. In the sixth C site, C(12) is bonded in a distorted trigonal non-coplanar geometry to one N(6), one H(11), and one H(12) atom. The C(12)-N(6) bond length is 1.45 Å. The C(12)-H(11) bond length is 1.09 Å. The C(12)-H(12) bond length is 1.10 Å. In the seventh C site, C(13) is bonded in a trigonal planar geometry to one N(1), one N(3), and one N(4) atom. The C(13)-N(1) bond length is 1.35 Å. The C(13)-N(3) bond length is 1.35 Å. The C(13)-N(4) bond length is 1.37 Å. In the eighth C site, C(14) is bonded in a trigonal planar geometry to one N(1), one N(2), and one N(5) atom. The C(14)-N(1) bond length is 1.35 Å. The C(14)-N(2) bond length is 1.35 Å. The C(14)-N(5) bond length is 1.37 Å. In the ninth C site, C(15) is bonded in a trigonal planar geometry to one N(2), one N(3), and one N(6) atom. The C(15)-N(2) bond length is 1.35 Å. The C(15)-N(3) bond length is 1.35 Å. The C(15)-N(6) bond length is 1.37 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one C(13) and one C(14) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one C(14) and one C(15) atom. In the third N site, N(3) is bonded in a bent 120 degrees geometry to one C(13) and one C(15) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(13), one C(7), and one C(8) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(9) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(15) atom. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(7) atom. In the second H site, H(2,7) is bonded in a single-bond geometry to one C(7) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(8) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(10) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(11) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(11) atom. In the tenth H site, H(11) is bonded in a single-bond geometry to one C(12) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(12) atom. In each U2H2(CO3)5 cluster, there are two inequivalent U sites. In the first U site, U(1) is bonded in a distorted linear geometry to one O(1), one O(13), one O(2), and one O(5) atom. The U(1)-O(1) bond length is 1.82 Å. The U(1)-O(13) bond length is 2.41 Å. The U(1)-O(2) bond length is 1.81 Å. The U(1)-O(5) bond length is 2.59 Å. In the second U site, U(2) is bonded in a distorted pentagonal bipyramidal geometry to one O(16), one O(17), one O(3), one O(4), one O(7), one O(8), and one O(9) atom. The U(2)-O(16) bond length is 2.31 Å. The U(2)-O(17) bond length is 2.45 Å. The U(2)-O(3) bond length is 1.81 Å. The U(2)-O(4) bond length is 1.82 Å. The U(2)-O(7) bond length is 2.47 Å. The U(2)-O(8) bond length is 2.47 Å. The U(2)-O(9) bond length is 2.28 Å. There are five inequivalent C sites. In the first C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(13) and one O(14) atom. The C(5)-O(13) bond length is 1.28 Å. The C(5)-O(14) bond length is 1.28 Å. In the second C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(1)-O(5) bond length is 1.29 Å. The C(1)-O(6) bond length is 1.27 Å. In the third C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. The C(2)-O(7) bond length is 1.28 Å. The C(2)-O(8) bond length is 1.28 Å. In the fourth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(10) and one O(9) atom. The C(3)-O(10) bond length is 1.24 Å. The C(3)-O(9) bond length is 1.30 Å. In the fifth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one O(15) and one O(16) atom. The C(6)-O(15) bond length is 1.25 Å. The C(6)-O(16) bond length is 1.30 Å. There are two inequivalent H sites. In the first H site, H(15) is bonded in a linear geometry to one O(17) and one O(5) atom. The H(15)-O(17) bond length is 1.00 Å. The H(15)-O(5) bond length is 1.63 Å. In the second H site, H(16) is bonded in a single-bond geometry to one O(17) atom. The H(16)-O(17) bond length is 0.97 Å. There are fifteen inequivalent O sites. In the first O site, O(6) is bonded in a distorted single-bond geometry to one C(1) atom. In the second O site, O(7) is bonded in a distorted single-bond geometry to one U(2) and one C(2) atom. In the third O site, O(8) is bonded in a distorted single-bond geometry to one U(2) and one C(2) atom. In the fourth O site, O(9) is bonded in a bent 150 degrees geometry to one U(2) and one C(3) atom. In the fifth O site, O(10) is bonded in a single-bond geometry to one C(3) atom. In the sixth O site, O(13) is bonded in a distorted single-bond geometry to one U(1) and one C(5) atom. In the seventh O site, O(14) is bonded in a distorted single-bond geometry to one C(5) atom. In the eighth O site, O(15) is bonded in a single-bond geometry to one C(6) atom. In the ninth O site, O(16) is bonded in a bent 150 degrees geometry to one U(2) and one C(6) atom. In the tenth O site, O(17) is bonded in a distorted water-like geometry to one U(2), one H(15), and one H(16) atom. In the eleventh O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the twelfth O site, O(2) is bonded in a single-bond geometry to one U(1) atom. In the thirteenth O site, O(3) is bonded in a single-bond geometry to one U(2) atom. In the fourteenth O site, O(4) is bonded in a single-bond geometry to one U(2) atom. In the fifteenth O site, O(5) is bonded in a 3-coordinate geometry to one U(1), one C(1), and one H(15) atom. Linkers: 4 [O]C(=O)CN(C1=NC(=[N]=C([N]1)N(CC(=O)[O])CC(=O)[O])N(CC(=O)[O])CC(=O)[O])CC(=O)[O]. Metal clusters: 4 [O][C]O[U]1([O])([O])(O[C]=O)O[C]O1 ,4 O.[O][U]([O])(O[C]=O)(O[C]=O)O[C]=O. The MOF has largest included sphere 3.35 A, density 2.36 g/cm3, surface area 2871.61 m2/g, accessible volume 0.11 cm3/g