U3C5HO8 crystallizes in the orthorhombic Pnnm space group. There are three inequivalent U sites. In the first U site, U(1) is bonded in a pentagonal planar geometry to one O(1), one O(2), one O(3), one O(4), and one O(8) atom. The U(1)-O(1) bond length is 2.51 Å. The U(1)-O(2) bond length is 2.42 Å. The U(1)-O(3) bond length is 2.39 Å. The U(1)-O(4) bond length is 2.21 Å. The U(1)-O(8) bond length is 2.37 Å. In the second U site, U(2) is bonded in a pentagonal planar geometry to one O(1), one O(3), one O(4), one O(5), and one O(7) atom. The U(2)-O(1) bond length is 2.49 Å. The U(2)-O(3) bond length is 2.48 Å. The U(2)-O(4) bond length is 2.18 Å. The U(2)-O(5) bond length is 2.41 Å. The U(2)-O(7) bond length is 2.40 Å. In the third U site, U(3) is bonded in a distorted pentagonal planar geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. The U(3)-O(1) bond length is 2.42 Å. The U(3)-O(2) bond length is 2.38 Å. The U(3)-O(3) bond length is 2.48 Å. The U(3)-O(4) bond length is 2.26 Å. The U(3)-O(6) bond length is 2.31 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one O(5), and one O(6) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(5) bond length is 1.26 Å. The C(1)-O(6) bond length is 1.27 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(5) atom. The C(2)-C(2) bond length is 1.38 Å. The C(2)-C(5) bond length is 1.39 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one O(7), and one O(8) atom. The C(3)-C(4) bond length is 1.50 Å. The C(3)-O(7) bond length is 1.26 Å. The C(3)-O(8) bond length is 1.24 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(4), and one C(6) atom. The C(4)-C(4) bond length is 1.41 Å. The C(4)-C(6) bond length is 1.39 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(1) atom. The C(5)-H(1) bond length is 0.93 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to two equivalent C(4) and one H(2) atom. The C(6)-H(2) bond length is 0.94 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(6) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one U(1), one U(2), and one U(3) atom. In the second O site, O(2) is bonded in a water-like geometry to one U(1) and one U(3) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one U(1), one U(2), and one U(3) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one U(1), one U(2), and one U(3) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one U(2) and one C(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one U(3) and one C(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one U(2) and one C(3) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one U(1) and one C(3) atom. Linkers: 5 [O]C(=O)c1cc(C([O])=O)c(C([O])=O)cc1C([O])=O. Metal clusters: 24 [U]. The MOF has largest included sphere 8.80 A, density 2.87 g/cm3, surface area 1256.33 m2/g, accessible volume 0.19 cm3/g