U5P8H20(C7O8)4 crystallizes in the triclinic P-1 space group. There are five inequivalent U sites. In the first U site, U(1) is bonded in a distorted pentagonal planar geometry to one O(1), one O(2), one O(29), one O(3), and one O(31) atom. The U(1)-O(1) bond length is 2.39 Å. The U(1)-O(2) bond length is 2.26 Å. The U(1)-O(29) bond length is 2.56 Å. The U(1)-O(3) bond length is 2.28 Å. The U(1)-O(31) bond length is 2.46 Å. In the second U site, U(2) is bonded in a distorted pentagonal planar geometry to one O(1), one O(12), one O(29), one O(4), and one O(6) atom. The U(2)-O(1) bond length is 2.54 Å. The U(2)-O(12) bond length is 2.32 Å. The U(2)-O(29) bond length is 2.41 Å. The U(2)-O(4) bond length is 2.40 Å. The U(2)-O(6) bond length is 2.26 Å. In the third U site, U(3) is bonded in a 4-coordinate geometry to one O(13), one O(26), one O(5), and one O(9) atom. The U(3)-O(13) bond length is 2.33 Å. The U(3)-O(26) bond length is 2.34 Å. The U(3)-O(5) bond length is 2.34 Å. The U(3)-O(9) bond length is 2.35 Å. In the fourth U site, U(4) is bonded in a 4-coordinate geometry to one O(15), one O(16), one O(30), and one O(7) atom. The U(4)-O(15) bond length is 2.34 Å. The U(4)-O(16) bond length is 2.30 Å. The U(4)-O(30) bond length is 2.34 Å. The U(4)-O(7) bond length is 2.39 Å. In the fifth U site, U(5) is bonded in a 3-coordinate geometry to one O(10), one O(17), and one O(19) atom. The U(5)-O(10) bond length is 2.33 Å. The U(5)-O(17) bond length is 2.38 Å. The U(5)-O(19) bond length is 2.33 Å. There are twenty-eight inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one P(1) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-P(1) bond length is 1.79 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(9) atom. The C(2)-C(3) bond length is 1.41 Å. The C(2)-H(9) bond length is 0.93 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one P(2) atom. The C(3)-C(4) bond length is 1.37 Å. The C(3)-P(2) bond length is 1.80 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(10) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(10) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. The C(5)-C(6) bond length is 1.43 Å. The C(5)-C(7) bond length is 1.47 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(11) atom. The C(6)-H(11) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(27), and one O(28) atom. The C(7)-O(27) bond length is 1.19 Å. The C(7)-O(28) bond length is 1.36 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(13), one C(9), and one P(3) atom. The C(8)-C(13) bond length is 1.39 Å. The C(8)-C(9) bond length is 1.38 Å. The C(8)-P(3) bond length is 1.80 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(10), one C(8), and one H(12) atom. The C(9)-C(10) bond length is 1.37 Å. The C(9)-H(12) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(14), and one C(9) atom. The C(10)-C(11) bond length is 1.38 Å. The C(10)-C(14) bond length is 1.48 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(10), one C(12), and one H(13) atom. The C(11)-C(12) bond length is 1.37 Å. The C(11)-H(13) bond length is 0.93 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(13), and one P(4) atom. The C(12)-C(13) bond length is 1.37 Å. The C(12)-P(4) bond length is 1.80 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(12), one C(8), and one H(14) atom. The C(13)-H(14) bond length is 0.93 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(23), and one O(24) atom. The C(14)-O(23) bond length is 1.28 Å. The C(14)-O(24) bond length is 1.27 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(16), one C(20), and one P(5) atom. The C(15)-C(16) bond length is 1.42 Å. The C(15)-C(20) bond length is 1.39 Å. The C(15)-P(5) bond length is 1.79 Å. In the sixteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(15), one C(17), and one H(15) atom. The C(16)-C(17) bond length is 1.40 Å. The C(16)-H(15) bond length is 0.93 Å. In the seventeenth C site, C(17) is bonded in a trigonal planar geometry to one C(16), one C(18), and one P(6) atom. The C(17)-C(18) bond length is 1.38 Å. The C(17)-P(6) bond length is 1.82 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(17), one C(19), and one H(16) atom. The C(18)-C(19) bond length is 1.37 Å. The C(18)-H(16) bond length is 0.93 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one C(18), one C(20), and one C(21) atom. The C(19)-C(20) bond length is 1.39 Å. The C(19)-C(21) bond length is 1.50 Å. In the twentieth C site, C(20) is bonded in a distorted single-bond geometry to one C(15), one C(19), and one H(17) atom. The C(20)-H(17) bond length is 0.93 Å. In the twenty-first C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(19), one O(11), and one O(32) atom. The C(21)-O(11) bond length is 1.27 Å. The C(21)-O(32) bond length is 1.24 Å. In the twenty-second C site, C(22) is bonded in a trigonal planar geometry to one C(23), one C(27), and one P(7) atom. The C(22)-C(23) bond length is 1.41 Å. The C(22)-C(27) bond length is 1.39 Å. The C(22)-P(7) bond length is 1.78 Å. In the twenty-third C site, C(23) is bonded in a distorted single-bond geometry to one C(22), one C(24), and one H(18) atom. The C(23)-C(24) bond length is 1.38 Å. The C(23)-H(18) bond length is 0.93 Å. In the twenty-fourth C site, C(24) is bonded in a trigonal planar geometry to one C(23), one C(25), and one P(8) atom. The C(24)-C(25) bond length is 1.36 Å. The C(24)-P(8) bond length is 1.81 Å. In the twenty-fifth C site, C(25) is bonded in a distorted single-bond geometry to one C(24), one C(26), and one H(19) atom. The C(25)-C(26) bond length is 1.40 Å. The C(25)-H(19) bond length is 0.93 Å. In the twenty-sixth C site, C(26) is bonded in a trigonal planar geometry to one C(25), one C(27), and one C(28) atom. The C(26)-C(27) bond length is 1.40 Å. The C(26)-C(28) bond length is 1.50 Å. In the twenty-seventh C site, C(27) is bonded in a distorted single-bond geometry to one C(22), one C(26), and one H(20) atom. The C(27)-H(20) bond length is 0.93 Å. In the twenty-eighth C site, C(28) is bonded in a distorted bent 120 degrees geometry to one C(26), one O(21), and one O(22) atom. The C(28)-O(21) bond length is 1.27 Å. The C(28)-O(22) bond length is 1.24 Å. There are eight inequivalent P sites. In the first P site, P(1) is bonded in a distorted tetrahedral geometry to one C(1), one O(16), one O(17), and one O(18) atom. The P(1)-O(16) bond length is 1.50 Å. The P(1)-O(17) bond length is 1.48 Å. The P(1)-O(18) bond length is 1.57 Å. In the second P site, P(2) is bonded in a tetrahedral geometry to one C(3), one O(1), one O(4), and one O(5) atom. The P(2)-O(1) bond length is 1.55 Å. The P(2)-O(4) bond length is 1.53 Å. The P(2)-O(5) bond length is 1.48 Å. In the third P site, P(3) is bonded in a distorted tetrahedral geometry to one C(8), one O(6), one O(7), and one O(8) atom. The P(3)-O(6) bond length is 1.50 Å. The P(3)-O(7) bond length is 1.49 Å. The P(3)-O(8) bond length is 1.59 Å. In the fourth P site, P(4) is bonded in a distorted tetrahedral geometry to one C(12), one O(12), one O(13), and one O(14) atom. The P(4)-O(12) bond length is 1.52 Å. The P(4)-O(13) bond length is 1.49 Å. The P(4)-O(14) bond length is 1.57 Å. In the fifth P site, P(5) is bonded in a tetrahedral geometry to one C(15), one O(29), one O(30), and one O(31) atom. The P(5)-O(29) bond length is 1.54 Å. The P(5)-O(30) bond length is 1.49 Å. The P(5)-O(31) bond length is 1.53 Å. In the sixth P site, P(6) is bonded in a tetrahedral geometry to one C(17), one O(10), one O(3), and one O(9) atom. The P(6)-O(10) bond length is 1.51 Å. The P(6)-O(3) bond length is 1.51 Å. The P(6)-O(9) bond length is 1.52 Å. In the seventh P site, P(7) is bonded in a distorted tetrahedral geometry to one C(22), one O(2), one O(25), and one O(26) atom. The P(7)-O(2) bond length is 1.50 Å. The P(7)-O(25) bond length is 1.58 Å. The P(7)-O(26) bond length is 1.49 Å. In the eighth P site, P(8) is bonded in a distorted tetrahedral geometry to one C(24), one O(15), one O(19), and one O(20) atom. The P(8)-O(15) bond length is 1.49 Å. The P(8)-O(19) bond length is 1.51 Å. The P(8)-O(20) bond length is 1.55 Å. There are twenty inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(8) atom. The H(1)-O(8) bond length is 0.82 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(11) atom. The H(2)-O(11) bond length is 0.82 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(14) atom. The H(3)-O(14) bond length is 0.82 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(18) atom. The H(4)-O(18) bond length is 0.82 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(20) atom. The H(5)-O(20) bond length is 0.82 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(23) atom. The H(6)-O(23) bond length is 0.82 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(25) atom. The H(7)-O(25) bond length is 0.82 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(28) atom. The H(8)-O(28) bond length is 0.82 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(2) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(4) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(6) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(9) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(11) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(13) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(16) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(18) atom. In the seventeenth H site, H(17) is bonded in a single-bond geometry to one C(20) atom. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one C(23) atom. In the nineteenth H site, H(19) is bonded in a single-bond geometry to one C(25) atom. In the twentieth H site, H(20) is bonded in a single-bond geometry to one C(27) atom. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one U(1), one U(2), and one P(2) atom. In the second O site, O(2) is bonded in a linear geometry to one U(1) and one P(7) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(6) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one U(2) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one U(3) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one U(2) and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one U(4) and one P(3) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one P(3) and one H(1) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one U(3) and one P(6) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one U(5) and one P(6) atom. In the eleventh O site, O(11) is bonded in a water-like geometry to one C(21) and one H(2) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one U(2) and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one U(3) and one P(4) atom. In the fourteenth O site, O(14) is bonded in a water-like geometry to one P(4) and one H(3) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one U(4) and one P(8) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one U(4) and one P(1) atom. In the seventeenth O site, O(17) is bonded in a distorted single-bond geometry to one U(5) and one P(1) atom. In the eighteenth O site, O(18) is bonded in a water-like geometry to one P(1) and one H(4) atom. In the nineteenth O site, O(19) is bonded in a distorted bent 150 degrees geometry to one U(5) and one P(8) atom. In the twentieth O site, O(20) is bonded in a water-like geometry to one P(8) and one H(5) atom. In the twenty-first O site, O(21) is bonded in a single-bond geometry to one C(28) atom. In the twenty-second O site, O(22) is bonded in a single-bond geometry to one C(28) atom. In the twenty-third O site, O(23) is bonded in a water-like geometry to one C(14) and one H(6) atom. In the twenty-fourth O site, O(24) is bonded in a single-bond geometry to one C(14) atom. In the twenty-fifth O site, O(25) is bonded in a water-like geometry to one P(7) and one H(7) atom. In the twenty-sixth O site, O(26) is bonded in a distorted single-bond geometry to one U(3) and one P(7) atom. In the twenty-seventh O site, O(27) is bonded in a single-bond geometry to one C(7) atom. In the twenty-eighth O site, O(28) is bonded in a water-like geometry to one C(7) and one H(8) atom. In the twenty-ninth O site, O(29) is bonded in a distorted single-bond geometry to one U(1), one U(2), and one P(5) atom. In the thirtieth O site, O(30) is bonded in a distorted single-bond geometry to one U(4) and one P(5) atom. In the thirty-first O site, O(31) is bonded in a distorted single-bond geometry to one U(1) and one P(5) atom. In the thirty-second O site, O(32) is bonded in a single-bond geometry to one C(21) atom. Linkers: 2 [O]P([O])(=O)c1cc(C(=O)O)cc(P([O])(=O)O)c1 ,2 [O]C(=O)c1cc(P([O])(=O)O)cc(P([O])(=O)O)c1 ,2 [O]P([O])(=O)c1cc(C(=O)O)cc(P([O])([O])=O)c1 ,2 [O]P(=O)(O)c1cc(C(=O)O)cc(P([O])(=O)O)c1. Metal clusters: 10 [U]. The MOF has largest included sphere 4.98 A, density 2.40 g/cm3, surface area 2237.09 m2/g, accessible volume 0.15 cm3/g