U5Mn2P6H12(C2O5)6 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(11), one O(3), one O(6), and two equivalent O(2) atoms. The U(1)-O(11) bond length is 2.34 Å. The U(1)-O(3) bond length is 2.47 Å. The U(1)-O(6) bond length is 2.27 Å. There is one shorter (2.40 Å) and one longer (2.54 Å) U(1)-O(2) bond length. In the second U site, U(2) is bonded in a distorted pentagonal planar geometry to one O(1), one O(13), one O(14), one O(15), and one O(17) atom. The U(2)-O(1) bond length is 2.28 Å. The U(2)-O(13) bond length is 2.31 Å. The U(2)-O(14) bond length is 2.51 Å. The U(2)-O(15) bond length is 2.59 Å. The U(2)-O(17) bond length is 2.29 Å. In the third U site, U(3) is bonded in a pentagonal planar geometry to one O(12), one O(15), one O(18), one O(22), and one O(25) atom. The U(3)-O(12) bond length is 2.35 Å. The U(3)-O(15) bond length is 2.48 Å. The U(3)-O(18) bond length is 2.35 Å. The U(3)-O(22) bond length is 2.31 Å. The U(3)-O(25) bond length is 2.47 Å. In the fourth U site, U(4) is bonded in a distorted pentagonal planar geometry to one O(16), one O(23), one O(24), one O(25), and one O(26) atom. The U(4)-O(16) bond length is 2.28 Å. The U(4)-O(23) bond length is 2.33 Å. The U(4)-O(24) bond length is 2.50 Å. The U(4)-O(25) bond length is 2.55 Å. The U(4)-O(26) bond length is 2.28 Å. In the fifth U site, U(5) is bonded in a distorted pentagonal planar geometry to one O(21), one O(28), one O(7), and two equivalent O(27) atoms. The U(5)-O(21) bond length is 2.30 Å. The U(5)-O(28) bond length is 2.46 Å. The U(5)-O(7) bond length is 2.28 Å. There is one shorter (2.40 Å) and one longer (2.53 Å) U(5)-O(27) bond length. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(20), one O(3), one O(30), one O(4), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Mn(2)O5 square pyramid,  a cornercorner with one P(1)CO3 tetrahedra, and  a cornercorner with one P(2)CO3 tetrahedra. The Mn(1)-O(10) bond length is 2.19 Å. The Mn(1)-O(20) bond length is 2.17 Å. The Mn(1)-O(3) bond length is 2.17 Å. The Mn(1)-O(30) bond length is 2.17 Å. The Mn(1)-O(4) bond length is 2.17 Å. The Mn(1)-O(8) bond length is 2.17 Å. In the second Mn site, Mn(2) is bonded to one O(19), one O(28), one O(8), and two equivalent O(29) atoms to form MnO5 square pyramids that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one P(2)CO3 tetrahedra,  a cornercorner with one P(6)CO3 tetrahedra, and  an edgeedge with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles are 71°. The Mn(2)-O(19) bond length is 2.12 Å. The Mn(2)-O(28) bond length is 2.14 Å. The Mn(2)-O(8) bond length is 2.15 Å. There is one shorter (2.24 Å) and one longer (2.31 Å) Mn(2)-O(29) bond length. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a distorted water-like geometry to one C(2); one P(1); and two equivalent H(1,2) atoms. The C(1)-C(2) bond length is 1.54 Å. The C(1)-P(1) bond length is 1.79 Å. Both C(1)-H(1,2) bond lengths are 0.99 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one O(4), and one O(5) atom. The C(2)-O(4) bond length is 1.25 Å. The C(2)-O(5) bond length is 1.27 Å. In the third C site, C(3) is bonded in a distorted water-like geometry to one C(4), one P(2), one H(3), and one H(4) atom. The C(3)-C(4) bond length is 1.52 Å. The C(3)-P(2) bond length is 1.79 Å. The C(3)-H(3) bond length is 0.99 Å. The C(3)-H(4) bond length is 0.99 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one O(10), and one O(9) atom. The C(4)-O(10) bond length is 1.29 Å. The C(4)-O(9) bond length is 1.25 Å. In the fifth C site, C(5) is bonded in a distorted water-like geometry to one C(6), one P(3), one H(5), and one H(6) atom. The C(5)-C(6) bond length is 1.49 Å. The C(5)-P(3) bond length is 1.82 Å. The C(5)-H(5) bond length is 0.99 Å. The C(5)-H(6) bond length is 0.99 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one O(14), and one O(15) atom. The C(6)-O(14) bond length is 1.26 Å. The C(6)-O(15) bond length is 1.29 Å. In the seventh C site, C(7) is bonded in a distorted water-like geometry to one P(4) and two equivalent H(7,8) atoms. The C(7)-P(4) bond length is 1.79 Å. Both C(7)-H(7,8) bond lengths are 0.99 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(19) and one O(20) atom. The C(8)-O(19) bond length is 1.26 Å. The C(8)-O(20) bond length is 1.27 Å. In the ninth C site, C(9) is bonded in a distorted water-like geometry to one C(10); one P(5); and two equivalent H(9,10) atoms. The C(9)-C(10) bond length is 1.50 Å. The C(9)-P(5) bond length is 1.82 Å. Both C(9)-H(9,10) bond lengths are 0.99 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(9), one O(24), and one O(25) atom. The C(10)-O(24) bond length is 1.24 Å. The C(10)-O(25) bond length is 1.30 Å. In the eleventh C site, C(11) is bonded in a distorted water-like geometry to one P(6) and two equivalent H(11,12) atoms. The C(11)-P(6) bond length is 1.79 Å. Both C(11)-H(11,12) bond lengths are 0.99 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one O(29) and one O(30) atom. The C(12)-O(29) bond length is 1.26 Å. The C(12)-O(30) bond length is 1.27 Å. There are six inequivalent P sites. In the first P site, P(1) is bonded to one C(1), one O(1), one O(2), and one O(3) atom to form PCO3 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. The P(1)-O(1) bond length is 1.49 Å. The P(1)-O(2) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.54 Å. In the second P site, P(2) is bonded to one C(3), one O(6), one O(7), and one O(8) atom to form PCO3 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra and  a cornercorner with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles are 64°. The P(2)-O(6) bond length is 1.52 Å. The P(2)-O(7) bond length is 1.53 Å. The P(2)-O(8) bond length is 1.54 Å. In the third P site, P(3) is bonded in a tetrahedral geometry to one C(5), one O(11), one O(12), and one O(13) atom. The P(3)-O(11) bond length is 1.52 Å. The P(3)-O(12) bond length is 1.53 Å. The P(3)-O(13) bond length is 1.58 Å. In the fourth P site, P(4) is bonded in a tetrahedral geometry to one C(7), one O(16), one O(17), and one O(18) atom. The P(4)-O(16) bond length is 1.51 Å. The P(4)-O(17) bond length is 1.52 Å. The P(4)-O(18) bond length is 1.53 Å. In the fifth P site, P(5) is bonded in a tetrahedral geometry to one C(9), one O(21), one O(22), and one O(23) atom. The P(5)-O(21) bond length is 1.53 Å. The P(5)-O(22) bond length is 1.53 Å. The P(5)-O(23) bond length is 1.54 Å. In the sixth P site, P(6) is bonded to one C(11), one O(26), one O(27), and one O(28) atom to form PCO3 tetrahedra that share  a cornercorner with one Mn(2)O5 square pyramid. The P(6)-O(26) bond length is 1.50 Å. The P(6)-O(27) bond length is 1.53 Å. The P(6)-O(28) bond length is 1.54 Å. There are eight inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(5) atom. In the sixth H site, H(7,8) is bonded in a single-bond geometry to one C(7) atom. In the seventh H site, H(9,10) is bonded in a single-bond geometry to one C(9) atom. In the eighth H site, H(11,12) is bonded in a single-bond geometry to one C(11) atom. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one U(2) and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent U(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one U(1), one Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(2) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one U(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one U(5) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one P(2) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one C(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(3) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one U(3) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one U(2) and one P(3) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one U(2) and one C(6) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one U(2), one U(3), and one C(6) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 150 degrees geometry to one U(4) and one P(4) atom. In the seventeenth O site, O(17) is bonded in a distorted single-bond geometry to one U(2) and one P(4) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 120 degrees geometry to one U(3) and one P(4) atom. In the nineteenth O site, O(19) is bonded in a distorted bent 120 degrees geometry to one Mn(2) and one C(8) atom. In the twentieth O site, O(20) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one C(8) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 150 degrees geometry to one U(5) and one P(5) atom. In the twenty-second O site, O(22) is bonded in a distorted single-bond geometry to one U(3) and one P(5) atom. In the twenty-third O site, O(23) is bonded in a distorted bent 150 degrees geometry to one U(4) and one P(5) atom. In the twenty-fourth O site, O(24) is bonded in a distorted single-bond geometry to one U(4) and one C(10) atom. In the twenty-fifth O site, O(25) is bonded in a distorted single-bond geometry to one U(3), one U(4), and one C(10) atom. In the twenty-sixth O site, O(26) is bonded in a distorted linear geometry to one U(4) and one P(6) atom. In the twenty-seventh O site, O(27) is bonded in a distorted single-bond geometry to two equivalent U(5) and one P(6) atom. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one U(5), one Mn(2), and one P(6) atom. In the twenty-ninth O site, O(29) is bonded in a 3-coordinate geometry to two equivalent Mn(2) and one C(12) atom. In the thirtieth O site, O(30) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(12) atom. Linkers: 12 [O]C(=O)CP([O])([O])=O. Metal clusters: 10 [U] ,4 [Mn]. The MOF has largest included sphere 7.66 A, density 2.16 g/cm3, surface area 1815.29 m2/g, accessible volume 0.24 cm3/g