Cs2UC8H6O13 crystallizes in the orthorhombic Aem2 space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 13-coordinate geometry to two equivalent H(1), one O(1), one O(2), one O(7), two equivalent O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms. Both Cs(1)-H(1) bond lengths are 3.29 Å. The Cs(1)-O(1) bond length is 3.52 Å. The Cs(1)-O(2) bond length is 3.25 Å. The Cs(1)-O(7) bond length is 3.44 Å. Both Cs(1)-O(4) bond lengths are 3.18 Å. Both Cs(1)-O(5) bond lengths are 3.43 Å. Both Cs(1)-O(6) bond lengths are 3.42 Å. Both Cs(1)-O(8) bond lengths are 3.38 Å. In the second Cs site, Cs(2) is bonded in a 6-coordinate geometry to two equivalent O(4), two equivalent O(6), and two equivalent O(8) atoms. Both Cs(2)-O(4) bond lengths are 3.12 Å. Both Cs(2)-O(6) bond lengths are 3.25 Å. Both Cs(2)-O(8) bond lengths are 3.17 Å. U(1) is bonded in a distorted pentagonal bipyramidal geometry to one O(1), one O(2), one O(7), two equivalent O(3), and two equivalent O(5) atoms. The U(1)-O(1) bond length is 1.81 Å. The U(1)-O(2) bond length is 1.82 Å. The U(1)-O(7) bond length is 2.47 Å. Both U(1)-O(3) bond lengths are 2.41 Å. Both U(1)-O(5) bond lengths are 2.33 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(3), and one O(4) atom. The C(1)-C(2) bond length is 1.45 Å. The C(1)-O(3) bond length is 1.29 Å. The C(1)-O(4) bond length is 1.25 Å. In the second C site, C(2) is bonded in a linear geometry to one C(1) and one C(3) atom. The C(2)-C(3) bond length is 1.22 Å. In the third C site, C(3) is bonded in a linear geometry to one C(2) and one C(4) atom. The C(3)-C(4) bond length is 1.44 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(5), and one O(6) atom. The C(4)-O(5) bond length is 1.29 Å. The C(4)-O(6) bond length is 1.26 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one Cs(1) and one O(7) atom. The H(1)-O(7) bond length is 1.00 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(8) atom. The H(2)-O(8) bond length is 0.98 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(8) atom. The H(3)-O(8) bond length is 0.98 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cs(1) and one U(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Cs(1) and one U(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one U(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Cs(1), one Cs(2), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Cs(1), one U(1), and one C(4) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one Cs(1), one Cs(2), and one C(4) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Cs(1), one U(1), and two equivalent H(1) atoms. In the eighth O site, O(8) is bonded in a water-like geometry to one Cs(1), one Cs(2), one H(2), and one H(3) atom. Linkers: 4 [O]C(=O)C#CC([O])=O. Metal clusters: 4 [Cs] ,2 [U]. The MOF has largest included sphere 2.63 A, density 3.11 g/cm3, surface area 2244.90 m2/g, accessible volume 0.05 cm3/g