U2NdC12O13 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a distorted pentagonal planar geometry to one O(10), one O(11), one O(13), one O(3), and one O(6) atom. The U(1)-O(10) bond length is 2.30 Å. The U(1)-O(11) bond length is 2.35 Å. The U(1)-O(13) bond length is 2.48 Å. The U(1)-O(3) bond length is 2.46 Å. The U(1)-O(6) bond length is 2.37 Å. In the second U site, U(2) is bonded in a distorted pentagonal planar geometry to one O(1), one O(10), one O(2), one O(4), and one O(9) atom. The U(2)-O(1) bond length is 2.47 Å. The U(2)-O(10) bond length is 2.29 Å. The U(2)-O(2) bond length is 2.49 Å. The U(2)-O(4) bond length is 2.38 Å. The U(2)-O(9) bond length is 2.37 Å. Nd(1) is bonded in a bent 120 degrees geometry to one O(7) and one O(8) atom. The Nd(1)-O(7) bond length is 2.46 Å. The Nd(1)-O(8) bond length is 2.44 Å. There are twelve 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(1), and one O(2) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(2) bond length is 1.25 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(10), and one C(11) atom. The C(2)-C(10) bond length is 1.41 Å. The C(2)-C(11) bond length is 1.41 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(4), one C(8), and one C(9) atom. The C(3)-C(4) bond length is 1.49 Å. The C(3)-C(8) bond length is 1.38 Å. The C(3)-C(9) bond length is 1.42 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(13), and one O(3) atom. The C(4)-O(13) bond length is 1.26 Å. The C(4)-O(3) bond length is 1.26 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(4), and one O(5) atom. The C(5)-C(8) bond length is 1.54 Å. The C(5)-O(4) bond length is 1.24 Å. The C(5)-O(5) bond length is 1.25 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(6), and one O(7) atom. The C(6)-C(10) bond length is 1.51 Å. The C(6)-O(6) bond length is 1.27 Å. The C(6)-O(7) bond length is 1.24 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(11), and one O(12) atom. The C(7)-C(11) bond length is 1.52 Å. The C(7)-O(11) bond length is 1.28 Å. The C(7)-O(12) bond length is 1.24 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(10), one C(3), and one C(5) atom. The C(8)-C(10) bond length is 1.40 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(3) atom. The C(9)-C(11) bond length is 1.39 Å. The C(9)-C(12) bond length is 1.52 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(8) atom. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(2), one C(7), and one C(9) atom. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(8), and one O(9) atom. The C(12)-O(8) bond length is 1.23 Å. The C(12)-O(9) bond length is 1.26 Å. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one U(2) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one U(2) and one C(1) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one U(1) and one C(4) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one U(2) and one C(5) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one U(1) and one C(6) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Nd(1) and one C(6) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Nd(1) and one C(12) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one U(2) and one C(12) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one U(1) and one U(2) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one U(1) and one C(7) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one C(7) atom. In the thirteenth O site, O(13) is bonded in a distorted L-shaped geometry to one U(1) and one C(4) atom. Linkers: 4 [O]C(=O)c1c(C([O])=O)c(C([O])=O)c(C([O])=O)c(C([O])=O)c1C([O])=O. Metal clusters: 4 [Nd] ,8 [U]. The MOF has largest included sphere 6.08 A, density 2.28 g/cm3, surface area 1904.95 m2/g, accessible volume 0.25 cm3/g