U3C18P6H34O29 crystallizes in the triclinic P1 space group. There are six inequivalent U sites. In the first U site, U(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(31), one O(34), one O(47), one O(49), and one O(5) atom. The U(1)-O(2) bond length is 2.36 Å. The U(1)-O(3) bond length is 2.39 Å. The U(1)-O(31) bond length is 2.34 Å. The U(1)-O(34) bond length is 2.33 Å. The U(1)-O(47) bond length is 1.80 Å. The U(1)-O(49) bond length is 1.80 Å. The U(1)-O(5) bond length is 2.65 Å. In the second U site, U(2) is bonded in a 7-coordinate geometry to one O(1), one O(32), one O(33), one O(4), one O(48), one O(50), and one O(6) atom. The U(2)-O(1) bond length is 2.36 Å. The U(2)-O(32) bond length is 2.34 Å. The U(2)-O(33) bond length is 2.33 Å. The U(2)-O(4) bond length is 2.39 Å. The U(2)-O(48) bond length is 1.80 Å. The U(2)-O(50) bond length is 1.80 Å. The U(2)-O(6) bond length is 2.65 Å. In the third U site, U(3) is bonded to one O(17), one O(19), one O(27), one O(35), one O(51), one O(55), and one O(7) atom to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one P(3,4)CO3 tetrahedra;  a cornercorner with one P(5,6)CO3 tetrahedra; and  a cornercorner with one P(9)CO3 tetrahedra. The U(3)-O(17) bond length is 2.28 Å. The U(3)-O(19) bond length is 2.53 Å. The U(3)-O(27) bond length is 2.31 Å. The U(3)-O(35) bond length is 2.39 Å. The U(3)-O(51) bond length is 1.80 Å. The U(3)-O(55) bond length is 1.83 Å. The U(3)-O(7) bond length is 2.54 Å. In the fourth U site, U(4) is bonded to one O(18), one O(20), one O(28), one O(36), one O(52), one O(56), and one O(8) atom to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one P(10)CO3 tetrahedra;  a cornercorner with one P(3,4)CO3 tetrahedra; and  a cornercorner with one P(5,6)CO3 tetrahedra. The U(4)-O(18) bond length is 2.28 Å. The U(4)-O(20) bond length is 2.53 Å. The U(4)-O(28) bond length is 2.31 Å. The U(4)-O(36) bond length is 2.39 Å. The U(4)-O(52) bond length is 1.80 Å. The U(4)-O(56) bond length is 1.83 Å. The U(4)-O(8) bond length is 2.54 Å. In the fifth U site, U(5) is bonded to one O(15), one O(21), one O(29), one O(37), one O(53), one O(57), and one O(9) atom to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one P(1)CO3 tetrahedra,  a cornercorner with one P(11)CO3 tetrahedra, and  a cornercorner with one P(7)CO3 tetrahedra. The U(5)-O(15) bond length is 2.27 Å. The U(5)-O(21) bond length is 2.53 Å. The U(5)-O(29) bond length is 2.31 Å. The U(5)-O(37) bond length is 2.40 Å. The U(5)-O(53) bond length is 1.79 Å. The U(5)-O(57) bond length is 1.83 Å. The U(5)-O(9) bond length is 2.55 Å. In the sixth U site, U(6) is bonded to one O(10), one O(16), one O(22), one O(30), one O(38), one O(54), and one O(58) atom to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one P(12)CO3 tetrahedra,  a cornercorner with one P(2)CO3 tetrahedra, and  a cornercorner with one P(8)CO3 tetrahedra. The U(6)-O(10) bond length is 2.55 Å. The U(6)-O(16) bond length is 2.27 Å. The U(6)-O(22) bond length is 2.53 Å. The U(6)-O(30) bond length is 2.31 Å. The U(6)-O(38) bond length is 2.40 Å. The U(6)-O(54) bond length is 1.79 Å. The U(6)-O(58) bond length is 1.83 Å. There are twenty-eight inequivalent C sites. In the first C site, C(1,2) is bonded in a trigonal planar geometry to one C(21,22); one C(25); and one C(5,6) atom. The C(1,2)-C(21,22) bond length is 1.40 Å. The C(1,2)-C(25) bond length is 1.50 Å. The C(1,2)-C(5,6) bond length is 1.40 Å. In the second C site, C(3,4) is bonded in a trigonal planar geometry to one C(23), one C(27), and one C(7) atom. The C(3,4)-C(23) bond length is 1.40 Å. The C(3,4)-C(27) bond length is 1.50 Å. The C(3,4)-C(7) bond length is 1.40 Å. In the third C site, C(5,6) is bonded in a distorted single-bond geometry to one C(1,2); one C(9,10); and one H(33,34) atom. The C(5,6)-C(9,10) bond length is 1.40 Å. The C(5,6)-H(33,34) bond length is 1.09 Å. In the fourth C site, C(7) is bonded in a distorted single-bond geometry to one C(11,12); one C(3,4); and one H(35,36) atom. The C(7)-C(11,12) bond length is 1.40 Å. The C(7)-H(35,36) bond length is 1.09 Å. In the fifth C site, C(8) is bonded in a distorted single-bond geometry to one C(11,12); one C(3,4); and one H(35,36) atom. The C(8)-C(11,12) bond length is 1.40 Å. The C(8)-C(3,4) bond length is 1.40 Å. The C(8)-H(35,36) bond length is 1.09 Å. In the sixth C site, C(9,10) is bonded in a trigonal planar geometry to one C(13,14); one C(29); and one C(5,6) atom. The C(9,10)-C(13,14) bond length is 1.40 Å. The C(9,10)-C(29) bond length is 1.50 Å. In the seventh C site, C(11,12) is bonded in a trigonal planar geometry to one C(15), one C(31), and one C(7) atom. The C(11,12)-C(15) bond length is 1.40 Å. The C(11,12)-C(31) bond length is 1.50 Å. In the eighth C site, C(13,14) is bonded in a distorted single-bond geometry to one C(17,18); one C(9,10); and one H(37,38) atom. The C(13,14)-C(17,18) bond length is 1.40 Å. The C(13,14)-H(37,38) bond length is 1.09 Å. In the ninth C site, C(15) is bonded in a distorted single-bond geometry to one C(11,12); one C(19); and one H(39,40) atom. The C(15)-C(19) bond length is 1.40 Å. The C(15)-H(39,40) bond length is 1.09 Å. In the tenth C site, C(16) is bonded in a distorted single-bond geometry to one C(11,12); one C(20); and one H(39,40) atom. The C(16)-C(11,12) bond length is 1.40 Å. The C(16)-C(20) bond length is 1.40 Å. The C(16)-H(39,40) bond length is 1.09 Å. In the eleventh C site, C(17,18) is bonded in a trigonal planar geometry to one C(13,14); one C(21,22); and one C(33) atom. The C(17,18)-C(21,22) bond length is 1.40 Å. The C(17,18)-C(33) bond length is 1.51 Å. In the twelfth C site, C(19) is bonded in a trigonal planar geometry to one C(15), one C(23), and one C(35) atom. The C(19)-C(23) bond length is 1.40 Å. The C(19)-C(35) bond length is 1.51 Å. In the thirteenth C site, C(20) is bonded in a trigonal planar geometry to one C(16), one C(24), and one C(36) atom. The C(20)-C(24) bond length is 1.40 Å. The C(20)-C(36) bond length is 1.51 Å. In the fourteenth C site, C(21,22) is bonded in a distorted single-bond geometry to one C(1,2); one C(17,18); and one H(41,42) atom. The C(21,22)-H(41,42) bond length is 1.09 Å. In the fifteenth C site, C(23) is bonded in a distorted single-bond geometry to one C(19); one C(3,4); and one H(43,44) atom. The C(23)-H(43,44) bond length is 1.09 Å. In the sixteenth C site, C(24) is bonded in a distorted single-bond geometry to one C(20); one C(3,4); and one H(43,44) atom. The C(24)-C(3,4) bond length is 1.40 Å. The C(24)-H(43,44) bond length is 1.09 Å. In the seventeenth C site, C(25) is bonded in a distorted water-like geometry to one C(1,2); one P(1); one H(45,46); and one H(49,50) atom. The C(25)-P(1) bond length is 1.82 Å. The C(25)-H(45,46) bond length is 1.10 Å. The C(25)-H(49,50) bond length is 1.10 Å. In the eighteenth C site, C(26) is bonded in a distorted water-like geometry to one C(1,2); one P(2); one H(45,46); and one H(49,50) atom. The C(26)-C(1,2) bond length is 1.50 Å. The C(26)-P(2) bond length is 1.82 Å. The C(26)-H(45,46) bond length is 1.10 Å. The C(26)-H(49,50) bond length is 1.10 Å. In the nineteenth C site, C(27) is bonded in a distorted water-like geometry to one C(3,4); one P(3,4); one H(47,48); and one H(51,52) atom. The C(27)-P(3,4) bond length is 1.82 Å. The C(27)-H(47,48) bond length is 1.10 Å. The C(27)-H(51,52) bond length is 1.10 Å. In the twentieth C site, C(28) is bonded in a distorted water-like geometry to one C(3,4); one P(3,4); one H(47,48); and one H(51,52) atom. The C(28)-C(3,4) bond length is 1.50 Å. The C(28)-P(3,4) bond length is 1.82 Å. The C(28)-H(47,48) bond length is 1.10 Å. The C(28)-H(51,52) bond length is 1.10 Å. In the twenty-first C site, C(29) is bonded in a distorted water-like geometry to one C(9,10); one P(5,6); one H(53,54); and one H(57,58) atom. The C(29)-P(5,6) bond length is 1.82 Å. The C(29)-H(53,54) bond length is 1.10 Å. The C(29)-H(57,58) bond length is 1.10 Å. In the twenty-second C site, C(30) is bonded in a distorted water-like geometry to one C(9,10); one P(5,6); one H(53,54); and one H(57,58) atom. The C(30)-C(9,10) bond length is 1.50 Å. The C(30)-P(5,6) bond length is 1.82 Å. The C(30)-H(53,54) bond length is 1.10 Å. The C(30)-H(57,58) bond length is 1.10 Å. In the twenty-third C site, C(31) is bonded in a distorted water-like geometry to one C(11,12); one P(7); one H(55,56); and one H(59,60) atom. The C(31)-P(7) bond length is 1.82 Å. The C(31)-H(55,56) bond length is 1.10 Å. The C(31)-H(59,60) bond length is 1.10 Å. In the twenty-fourth C site, C(32) is bonded in a distorted water-like geometry to one C(11,12); one P(8); one H(55,56); and one H(59,60) atom. The C(32)-C(11,12) bond length is 1.50 Å. The C(32)-P(8) bond length is 1.82 Å. The C(32)-H(55,56) bond length is 1.10 Å. The C(32)-H(59,60) bond length is 1.10 Å. In the twenty-fifth C site, C(33) is bonded in a 2-coordinate geometry to one C(17,18); one P(9); one H(61,62,63,64); and one H(65,66,67,68) atom. The C(33)-P(9) bond length is 1.81 Å. The C(33)-H(61,62,63,64) bond length is 1.10 Å. The C(33)-H(65,66,67,68) bond length is 1.10 Å. In the twenty-sixth C site, C(34) is bonded in a 2-coordinate geometry to one C(17,18); one P(10); one H(61,62,63,64); and one H(65,66,67,68) atom. The C(34)-C(17,18) bond length is 1.51 Å. The C(34)-P(10) bond length is 1.81 Å. The C(34)-H(61,62,63,64) bond length is 1.10 Å. The C(34)-H(65,66,67,68) bond length is 1.10 Å. In the twenty-seventh C site, C(35) is bonded in a 2-coordinate geometry to one C(19); one P(11); one H(61,62,63,64); and one H(65,66,67,68) atom. The C(35)-P(11) bond length is 1.81 Å. The C(35)-H(61,62,63,64) bond length is 1.10 Å. The C(35)-H(65,66,67,68) bond length is 1.10 Å. In the twenty-eighth C site, C(36) is bonded in a 2-coordinate geometry to one C(20); one P(12); one H(61,62,63,64); and one H(65,66,67,68) atom. The C(36)-P(12) bond length is 1.81 Å. The C(36)-H(61,62,63,64) bond length is 1.10 Å. The C(36)-H(65,66,67,68) bond length is 1.10 Å. There are ten inequivalent P sites. In the first P site, P(1) is bonded to one C(25), one O(1), one O(11), and one O(15) atom to form PCO3 tetrahedra that share  a cornercorner with one U(5)O7 pentagonal bipyramid. The P(1)-O(1) bond length is 1.51 Å. The P(1)-O(11) bond length is 1.58 Å. The P(1)-O(15) bond length is 1.54 Å. In the second P site, P(2) is bonded to one C(26), one O(12), one O(16), and one O(2) atom to form PCO3 tetrahedra that share  a cornercorner with one U(6)O7 pentagonal bipyramid. The P(2)-O(12) bond length is 1.58 Å. The P(2)-O(16) bond length is 1.54 Å. The P(2)-O(2) bond length is 1.51 Å. In the third P site, P(3,4) is bonded to one C(27), one O(13), one O(17), and one O(3) atom to form PCO3 tetrahedra that share  a cornercorner with one U(3)O7 pentagonal bipyramid. The P(3,4)-O(13) bond length is 1.59 Å. The P(3,4)-O(17) bond length is 1.54 Å. The P(3,4)-O(3) bond length is 1.51 Å. In the fourth P site, P(5,6) is bonded to one C(29), one O(23), one O(27), and one O(31) atom to form PCO3 tetrahedra that share  a cornercorner with one U(3)O7 pentagonal bipyramid. The P(5,6)-O(23) bond length is 1.62 Å. The P(5,6)-O(27) bond length is 1.53 Å. The P(5,6)-O(31) bond length is 1.50 Å. In the fifth P site, P(7) is bonded to one C(31), one O(25), one O(29), and one O(33) atom to form PCO3 tetrahedra that share  a cornercorner with one U(5)O7 pentagonal bipyramid. The P(7)-O(25) bond length is 1.61 Å. The P(7)-O(29) bond length is 1.53 Å. The P(7)-O(33) bond length is 1.50 Å. In the sixth P site, P(8) is bonded to one C(32), one O(26), one O(30), and one O(34) atom to form PCO3 tetrahedra that share  a cornercorner with one U(6)O7 pentagonal bipyramid. The P(8)-O(26) bond length is 1.61 Å. The P(8)-O(30) bond length is 1.53 Å. The P(8)-O(34) bond length is 1.50 Å. In the seventh P site, P(9) is bonded to one C(33), one O(35), one O(39), and one O(43) atom to form PCO3 tetrahedra that share  a cornercorner with one U(3)O7 pentagonal bipyramid. The P(9)-O(35) bond length is 1.53 Å. The P(9)-O(39) bond length is 1.53 Å. The P(9)-O(43) bond length is 1.58 Å. In the eighth P site, P(10) is bonded to one C(34), one O(36), one O(40), and one O(44) atom to form PCO3 tetrahedra that share  a cornercorner with one U(4)O7 pentagonal bipyramid. The P(10)-O(36) bond length is 1.53 Å. The P(10)-O(40) bond length is 1.53 Å. The P(10)-O(44) bond length is 1.58 Å. In the ninth P site, P(11) is bonded to one C(35), one O(37), one O(41), and one O(45) atom to form PCO3 tetrahedra that share  a cornercorner with one U(5)O7 pentagonal bipyramid. The P(11)-O(37) bond length is 1.53 Å. The P(11)-O(41) bond length is 1.53 Å. The P(11)-O(45) bond length is 1.58 Å. In the tenth P site, P(12) is bonded to one C(36), one O(38), one O(42), and one O(46) atom to form PCO3 tetrahedra that share  a cornercorner with one U(6)O7 pentagonal bipyramid. The P(12)-O(38) bond length is 1.53 Å. The P(12)-O(42) bond length is 1.53 Å. The P(12)-O(46) bond length is 1.58 Å. There are forty-four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(5) atom. The H(1)-O(5) bond length is 0.97 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. The H(2)-O(6) bond length is 0.97 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(5) atom. The H(3)-O(5) bond length is 0.98 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(6) atom. The H(4)-O(6) bond length is 0.98 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(37) and one O(7) atom. The H(5)-O(37) bond length is 1.70 Å. The H(5)-O(7) bond length is 1.00 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(38) and one O(8) atom. The H(6)-O(38) bond length is 1.70 Å. The H(6)-O(8) bond length is 1.00 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(35) and one O(9) atom. The H(7)-O(35) bond length is 1.72 Å. The H(7)-O(9) bond length is 1.00 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(10) and one O(36) atom. The H(8)-O(10) bond length is 1.00 Å. The H(8)-O(36) bond length is 1.72 Å. In the ninth H site, H(9,10) is bonded in a single-bond geometry to one O(7) atom. The H(9,10)-O(7) bond length is 0.97 Å. In the tenth H site, H(11) is bonded in a single-bond geometry to one O(9) atom. The H(11)-O(9) bond length is 0.97 Å. In the eleventh H site, H(12) is bonded in a single-bond geometry to one O(10) atom. The H(12)-O(10) bond length is 0.97 Å. In the twelfth H site, H(13) is bonded in a linear geometry to one O(11) and one O(41) atom. The H(13)-O(11) bond length is 1.01 Å. The H(13)-O(41) bond length is 1.58 Å. In the thirteenth H site, H(14) is bonded in a linear geometry to one O(12) and one O(42) atom. The H(14)-O(12) bond length is 1.01 Å. The H(14)-O(42) bond length is 1.58 Å. In the fourteenth H site, H(15,16) is bonded in a linear geometry to one O(13) and one O(39) atom. The H(15,16)-O(13) bond length is 1.01 Å. The H(15,16)-O(39) bond length is 1.58 Å. In the fifteenth H site, H(17) is bonded in a single-bond geometry to one O(19) atom. The H(17)-O(19) bond length is 0.97 Å. In the sixteenth H site, H(18) is bonded in a single-bond geometry to one O(20) atom. The H(18)-O(20) bond length is 0.97 Å. In the seventeenth H site, H(19) is bonded in a single-bond geometry to one O(21) atom. The H(19)-O(21) bond length is 0.97 Å. In the eighteenth H site, H(20) is bonded in a single-bond geometry to one O(22) atom. The H(20)-O(22) bond length is 0.97 Å. In the nineteenth H site, H(21) is bonded in a single-bond geometry to one O(19) atom. The H(21)-O(19) bond length is 0.99 Å. In the twentieth H site, H(22) is bonded in a single-bond geometry to one O(20) atom. The H(22)-O(20) bond length is 0.99 Å. In the twenty-first H site, H(23,24) is bonded in a single-bond geometry to one O(21) atom. The H(23,24)-O(21) bond length is 0.99 Å. In the twenty-second H site, H(25,26) is bonded in a single-bond geometry to one O(23) atom. The H(25,26)-O(23) bond length is 0.98 Å. In the twenty-third H site, H(27) is bonded in a single-bond geometry to one O(25) atom. The H(27)-O(25) bond length is 0.98 Å. In the twenty-fourth H site, H(28) is bonded in a single-bond geometry to one O(26) atom. The H(28)-O(26) bond length is 0.98 Å. In the twenty-fifth H site, H(29) is bonded in a linear geometry to one O(41) and one O(43) atom. The H(29)-O(41) bond length is 1.40 Å. The H(29)-O(43) bond length is 1.06 Å. In the twenty-sixth H site, H(30) is bonded in a linear geometry to one O(42) and one O(44) atom. The H(30)-O(42) bond length is 1.40 Å. The H(30)-O(44) bond length is 1.06 Å. In the twenty-seventh H site, H(31) is bonded in a linear geometry to one O(39) and one O(45) atom. The H(31)-O(39) bond length is 1.41 Å. The H(31)-O(45) bond length is 1.06 Å. In the twenty-eighth H site, H(32) is bonded in a linear geometry to one O(40) and one O(46) atom. The H(32)-O(40) bond length is 1.41 Å. The H(32)-O(46) bond length is 1.06 Å. In the twenty-ninth H site, H(33,34) is bonded in a single-bond geometry to one C(5,6) atom. In the thirtieth H site, H(35,36) is bonded in a single-bond geometry to one C(7) atom. In the thirty-first H site, H(37,38) is bonded in a single-bond geometry to one C(13,14) atom. In the thirty-second H site, H(39,40) is bonded in a single-bond geometry to one C(15) atom. In the thirty-third H site, H(41,42) is bonded in a single-bond geometry to one C(21,22) atom. In the thirty-fourth H site, H(43,44) is bonded in a single-bond geometry to one C(23) atom. In the thirty-fifth H site, H(45,46) is bonded in a single-bond geometry to one C(25) atom. In the thirty-sixth H site, H(47,48) is bonded in a single-bond geometry to one C(27) atom. In the thirty-seventh H site, H(49,50) is bonded in a single-bond geometry to one C(25) atom. In the thirty-eighth H site, H(51,52) is bonded in a single-bond geometry to one C(27) atom. In the thirty-ninth H site, H(53,54) is bonded in a single-bond geometry to one C(29) atom. In the fortieth H site, H(55,56) is bonded in a single-bond geometry to one C(31) atom. In the forty-first H site, H(57,58) is bonded in a single-bond geometry to one C(29) atom. In the forty-second H site, H(59,60) is bonded in a single-bond geometry to one C(31) atom. In the forty-third H site, H(61,62,63,64) is bonded in a single-bond geometry to one C(33) atom. In the forty-fourth H site, H(65,66,67,68) is bonded in a single-bond geometry to one C(33) atom. There are fifty-eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one U(2) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(3,4) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one U(2) and one P(3,4) atom. The O(4)-P(3,4) bond length is 1.51 Å. In the fifth O site, O(5) is bonded in a water-like geometry to one U(1), one H(1), and one H(3) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one U(2), one H(2), and one H(4) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one U(3); one H(5); and one H(9,10) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one U(4); one H(6); and one H(9,10) atom. The O(8)-H(9,10) bond length is 0.97 Å. In the ninth O site, O(9) is bonded in a water-like geometry to one U(5), one H(11), and one H(7) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one U(6), one H(12), and one H(8) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one P(1) and one H(13) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one P(2) and one H(14) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one P(3,4) and one H(15,16) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one P(3,4) and one H(15,16) atom. The O(14)-P(3,4) bond length is 1.59 Å. The O(14)-H(15,16) bond length is 1.01 Å. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one U(5) and one P(1) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one U(6) and one P(2) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one U(3) and one P(3,4) atom. In the eighteenth O site, O(18) is bonded in a bent 150 degrees geometry to one U(4) and one P(3,4) atom. The O(18)-P(3,4) bond length is 1.54 Å. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one U(3), one H(17), and one H(21) atom. In the twentieth O site, O(20) is bonded in a 2-coordinate geometry to one U(4), one H(18), and one H(22) atom. In the twenty-first O site, O(21) is bonded in a 2-coordinate geometry to one U(5); one H(19); and one H(23,24) atom. In the twenty-second O site, O(22) is bonded in a 2-coordinate geometry to one U(6); one H(20); and one H(23,24) atom. The O(22)-H(23,24) bond length is 0.99 Å. In the twenty-third O site, O(23) is bonded in a water-like geometry to one P(5,6) and one H(25,26) atom. In the twenty-fourth O site, O(24) is bonded in a water-like geometry to one P(5,6) and one H(25,26) atom. The O(24)-P(5,6) bond length is 1.62 Å. The O(24)-H(25,26) bond length is 0.98 Å. In the twenty-fifth O site, O(25) is bonded in a water-like geometry to one P(7) and one H(27) atom. In the twenty-sixth O site, O(26) is bonded in a bent 120 degrees geometry to one P(8) and one H(28) atom. In the twenty-seventh O site, O(27) is bonded in a bent 150 degrees geometry to one U(3) and one P(5,6) atom. In the twenty-eighth O site, O(28) is bonded in a bent 150 degrees geometry to one U(4) and one P(5,6) atom. The O(28)-P(5,6) bond length is 1.53 Å. In the twenty-ninth O site, O(29) is bonded in a bent 150 degrees geometry to one U(5) and one P(7) atom. In the thirtieth O site, O(30) is bonded in a bent 150 degrees geometry to one U(6) and one P(8) atom. In the thirty-first O site, O(31) is bonded in a distorted linear geometry to one U(1) and one P(5,6) atom. In the thirty-second O site, O(32) is bonded in a distorted linear geometry to one U(2) and one P(5,6) atom. The O(32)-P(5,6) bond length is 1.50 Å. In the thirty-third O site, O(33) is bonded in a distorted linear geometry to one U(2) and one P(7) atom. In the thirty-fourth O site, O(34) is bonded in a distorted linear geometry to one U(1) and one P(8) atom. In the thirty-fifth O site, O(35) is bonded in a distorted single-bond geometry to one U(3), one P(9), and one H(7) atom. In the thirty-sixth O site, O(36) is bonded in a distorted single-bond geometry to one U(4), one P(10), and one H(8) atom. In the thirty-seventh O site, O(37) is bonded in a distorted single-bond geometry to one U(5), one P(11), and one H(5) atom. In the thirty-eighth O site, O(38) is bonded in a distorted single-bond geometry to one U(6), one P(12), and one H(6) atom. In the thirty-ninth O site, O(39) is bonded in a trigonal planar geometry to one P(9); one H(15,16); and one H(31) atom. In the fortieth O site, O(40) is bonded in a trigonal planar geometry to one P(10); one H(15,16); and one H(32) atom. The O(40)-H(15,16) bond length is 1.58 Å. In the forty-first O site, O(41) is bonded in a trigonal planar geometry to one P(11), one H(13), and one H(29) atom. In the forty-second O site, O(42) is bonded in a trigonal planar geometry to one P(12), one H(14), and one H(30) atom. In the forty-third O site, O(43) is bonded in a distorted bent 120 degrees geometry to one P(9) and one H(29) atom. In the forty-fourth O site, O(44) is bonded in a distorted bent 120 degrees geometry to one P(10) and one H(30) atom. In the forty-fifth O site, O(45) is bonded in a distorted bent 120 degrees geometry to one P(11) and one H(31) atom. In the forty-sixth O site, O(46) is bonded in a distorted bent 120 degrees geometry to one P(12) and one H(32) atom. In the forty-seventh O site, O(47) is bonded in a single-bond geometry to one U(1) atom. In the forty-eighth O site, O(48) is bonded in a single-bond geometry to one U(2) atom. In the forty-ninth O site, O(49) is bonded in a single-bond geometry to one U(1) atom. In the fiftieth O site, O(50) is bonded in a single-bond geometry to one U(2) atom. In the fifty-first O site, O(51) is bonded in a single-bond geometry to one U(3) atom. In the fifty-second O site, O(52) is bonded in a single-bond geometry to one U(4) atom. In the fifty-third O site, O(53) is bonded in a single-bond geometry to one U(5) atom. In the fifty-fourth O site, O(54) is bonded in a single-bond geometry to one U(6) atom. In the fifty-fifth O site, O(55) is bonded in a single-bond geometry to one U(3) atom. In the fifty-sixth O site, O(56) is bonded in a single-bond geometry to one U(4) atom. In the fifty-seventh O site, O(57) is bonded in a single-bond geometry to one U(5) atom. In the fifty-eighth O site, O(58) is bonded in a single-bond geometry to one U(6) atom. Linkers: 4 [O]P(=O)(O)Cc1cc(CP([O])(=O)O)cc(CP([O])(=O)O)c1. Metal clusters: 2 O.O.O.O.O.[O]P(O)O[U]1([O])([O])OP(O)O[U]2([O])([O])(OP(O)O1)OP(O)O[U]([O])([O])(OP([O])O)OP(O)O2. RCSR code: kgd. The MOF has largest included sphere 5.34 A, density 2.12 g/cm3, surface area 2763.81 m2/g, accessible volume 0.20 cm3/g