UC16H16(NO5)2 crystallizes in the monoclinic Cc space group. U(1) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The U(1)-O(1) bond length is 2.47 Å. The U(1)-O(10) bond length is 2.57 Å. The U(1)-O(2) bond length is 2.47 Å. The U(1)-O(3) bond length is 2.40 Å. The U(1)-O(4) bond length is 2.41 Å. The U(1)-O(5) bond length is 2.46 Å. The U(1)-O(6) bond length is 2.47 Å. The U(1)-O(7) bond length is 2.42 Å. The U(1)-O(8) bond length is 2.41 Å. The U(1)-O(9) bond length is 2.57 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(5), one O(1), and one O(5) atom. The C(1)-C(5) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(5) bond length is 1.28 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(2), and one O(6) atom. The C(2)-C(6) bond length is 1.49 Å. The C(2)-O(2) bond length is 1.28 Å. The C(2)-O(6) bond length is 1.28 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(6), one C(7), and one C(9) atom. The C(3)-C(6) bond length is 1.41 Å. The C(3)-C(7) bond length is 1.39 Å. The C(3)-C(9) bond length is 1.50 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(10), one C(5), and one C(8) atom. The C(4)-C(10) bond length is 1.50 Å. The C(4)-C(5) bond length is 1.41 Å. The C(4)-C(8) bond length is 1.39 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(7) atom. The C(5)-C(7) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(8) atom. The C(6)-C(8) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(3), one C(5), and one H(15) atom. The C(7)-H(15) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one H(16) atom. The C(8)-H(16) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(9) atom. The C(9)-O(3) bond length is 1.29 Å. The C(9)-O(9) bond length is 1.26 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(10), and one O(4) atom. The C(10)-O(10) bond length is 1.26 Å. The C(10)-O(4) bond length is 1.29 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one N(1), one H(13), and one O(7) atom. The C(11)-N(1) bond length is 1.33 Å. The C(11)-H(13) bond length is 1.10 Å. The C(11)-O(7) bond length is 1.26 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one N(2), one H(14), and one O(8) atom. The C(12)-N(2) bond length is 1.33 Å. The C(12)-H(14) bond length is 1.10 Å. The C(12)-O(8) bond length is 1.27 Å. In the thirteenth C site, C(13) is bonded to one N(1); one H(1,2); one H(3,4); and one H(5,6) atom to form corner-sharing CH3N tetrahedra. The C(13)-N(1) bond length is 1.46 Å. The C(13)-H(1,2) bond length is 1.10 Å. The C(13)-H(3,4) bond length is 1.10 Å. The C(13)-H(5,6) bond length is 1.10 Å. In the fourteenth C site, C(14) is bonded to one N(2); one H(1,2); one H(3,4); and one H(5,6) atom to form corner-sharing CH3N tetrahedra. The C(14)-N(2) bond length is 1.46 Å. The C(14)-H(1,2) bond length is 1.10 Å. The C(14)-H(3,4) bond length is 1.10 Å. The C(14)-H(5,6) bond length is 1.10 Å. In the fifteenth C site, C(15) is bonded to one N(1); one H(11,12); one H(7); and one H(9,10) atom to form corner-sharing CH3N tetrahedra. The C(15)-N(1) bond length is 1.46 Å. The C(15)-H(11,12) bond length is 1.10 Å. The C(15)-H(7) bond length is 1.10 Å. The C(15)-H(9,10) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded to one N(2); one H(11,12); one H(8); and one H(9,10) atom to form corner-sharing CH3N tetrahedra. The C(16)-N(2) bond length is 1.46 Å. The C(16)-H(11,12) bond length is 1.10 Å. The C(16)-H(8) bond length is 1.10 Å. The C(16)-H(9,10) bond length is 1.09 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(15) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(16) atom. There are eleven inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(13) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(13) atom. In the third H site, H(5,6) is bonded in a single-bond geometry to one C(13) atom. In the fourth H site, H(7) is bonded in a single-bond geometry to one C(15) atom. In the fifth H site, H(8) is bonded in a single-bond geometry to one C(16) atom. In the sixth H site, H(9,10) is bonded in a single-bond geometry to one C(15) atom. In the seventh H site, H(11,12) is bonded in a single-bond geometry to one C(15) atom. In the eighth H site, H(13) is bonded in a single-bond geometry to one C(11) atom. In the ninth H site, H(14) is bonded in a single-bond geometry to one C(12) atom. In the tenth H site, H(15) is bonded in a single-bond geometry to one C(7) atom. In the eleventh H site, H(16) is bonded in a single-bond geometry to one C(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one U(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one U(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one U(1) and one C(9) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one U(1) and one C(10) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one U(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one U(1) and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one U(1) and one C(11) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one U(1) and one C(12) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one U(1) and one C(9) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one U(1) and one C(10) atom. Linkers: 2 [O]C(=O)c1cc(C([O])=O)c(C([O])=O)cc1C([O])=O. Metal clusters: 2 [U]. RCSR code: pts. The MOF has largest included sphere 3.04 A, density 2.05 g/cm3, surface area 3202.72 m2/g, accessible volume 0.14 cm3/g