UPH12(C3O)7 crystallizes in the orthorhombic I2_12_12_1 space group. The structure consists of a UPH12(C3O)7 framework. U(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(6) atom. The U(1)-O(1) bond length is 2.45 Å. The U(1)-O(2) bond length is 2.46 Å. The U(1)-O(5) bond length is 2.45 Å. The U(1)-O(6) bond length is 2.44 Å. There are twenty-one inequivalent C sites. In the first C site, C(18) is bonded in a distorted trigonal planar geometry to one C(13), one C(17), and one H(10) atom. The C(18)-C(13) bond length is 1.26 Å. The C(18)-C(17) bond length is 1.48 Å. The C(18)-H(10) bond length is 0.93 Å. In the second C site, C(19) is bonded in a distorted single-bond geometry to one C(13) and one H(11) atom. The C(19)-C(13) bond length is 1.48 Å. The C(19)-H(11) bond length is 0.93 Å. In the third C site, C(20) is bonded in a distorted single-bond geometry to one C(15) and one H(12) atom. The C(20)-C(15) bond length is 1.42 Å. The C(20)-H(12) bond length is 0.93 Å. In the fourth C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(6), and one O(7) atom. The C(21)-C(14) bond length is 1.46 Å. The C(21)-O(6) bond length is 1.25 Å. The C(21)-O(7) bond length is 1.20 Å. In the fifth C site, C(17) is bonded in a distorted single-bond geometry to one C(15), one C(18), and one H(9) atom. The C(17)-C(15) bond length is 1.25 Å. The C(17)-H(9) bond length is 0.93 Å. In the sixth C site, C(1) is bonded in a distorted single-bond geometry to one C(10), one C(8), and one H(1) atom. The C(1)-C(10) bond length is 1.46 Å. The C(1)-C(8) bond length is 1.31 Å. The C(1)-H(1) bond length is 0.93 Å. In the seventh C site, C(2) is bonded in a distorted trigonal planar geometry to one C(14), one C(4), and one H(2) atom. The C(2)-C(14) bond length is 1.26 Å. The C(2)-C(4) bond length is 1.34 Å. The C(2)-H(2) bond length is 0.93 Å. In the eighth C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one C(5), and one P(1) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-C(5) bond length is 1.32 Å. The C(3)-P(1) bond length is 1.84 Å. In the ninth C site, C(4) is bonded in a distorted single-bond geometry to one C(2), one C(3), and one H(3) atom. The C(4)-H(3) bond length is 0.93 Å. In the tenth C site, C(5) is bonded in a single-bond geometry to one C(3) and one H(4) atom. The C(5)-H(4) bond length is 0.93 Å. In the eleventh C site, C(6) is bonded in a distorted single-bond geometry to one C(14) and one H(5) atom. The C(6)-C(14) bond length is 1.48 Å. The C(6)-H(5) bond length is 0.93 Å. In the twelfth C site, C(7) is bonded in a distorted trigonal planar geometry to one C(11), one O(1), and one O(2) atom. The C(7)-C(11) bond length is 1.36 Å. The C(7)-O(1) bond length is 1.35 Å. The C(7)-O(2) bond length is 1.29 Å. In the thirteenth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(1), one C(11), and one H(6) atom. The C(8)-C(11) bond length is 1.41 Å. The C(8)-H(6) bond length is 0.93 Å. In the fourteenth C site, C(9) is bonded in a single-bond geometry to one C(10) and one H(7) atom. The C(9)-C(10) bond length is 1.47 Å. The C(9)-H(7) bond length is 0.93 Å. In the fifteenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(1), one C(9), and one P(1) atom. The C(10)-P(1) bond length is 1.76 Å. In the sixteenth C site, C(11) is bonded in a trigonal planar geometry to one C(12), one C(7), and one C(8) atom. The C(11)-C(12) bond length is 1.34 Å. In the seventeenth C site, C(12) is bonded in a distorted single-bond geometry to one C(11) and one H(8) atom. The C(12)-H(8) bond length is 0.93 Å. In the eighteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(18), one C(19), and one P(1) atom. The C(13)-P(1) bond length is 1.74 Å. In the nineteenth C site, C(14) is bonded in a trigonal planar geometry to one C(2), one C(21), and one C(6) atom. In the twentieth C site, C(15) is bonded in a trigonal planar geometry to one C(16), one C(17), and one C(20) atom. The C(15)-C(16) bond length is 1.43 Å. In the twenty-first C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(4), and one O(5) atom. The C(16)-O(4) bond length is 1.30 Å. The C(16)-O(5) bond length is 1.28 Å. P(1) is bonded in a distorted tetrahedral geometry to one C(10), one C(13), one C(3), and one O(3) atom. The P(1)-O(3) bond length is 1.51 Å. There are twelve inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(12) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(17) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(19) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(20) atom. There are seven 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(7) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one U(1) and one C(7) atom. In the third O site, O(5) is bonded in an L-shaped geometry to one U(1) and one C(16) atom. In the fourth O site, O(6) is bonded in a distorted single-bond geometry to one U(1) and one C(21) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one C(16) atom. In the sixth O site, O(3) is bonded in a single-bond geometry to one P(1) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one C(21) atom. Linkers: 8 [O]C(=O)c1ccc(P(=O)(c2ccc(C([O])=O)cc2)c2ccc(C([O])=O)cc2)cc1. Metal clusters: 8 [C]1O[U]23(O1)(O[C]O2)O[C]O3. RCSR code: srs. The MOF has largest included sphere 10.30 A, density 0.79 g/cm3, surface area 3394.40 m2/g, accessible volume 0.83 cm3/g