PrSiH16(C7O2)4 is Protactinium structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four PrSiH16(C7O2)4 clusters. Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(8), and two equivalent O(6) atoms. The Pr(1)-O(1) bond length is 2.53 Å. The Pr(1)-O(2) bond length is 2.50 Å. The Pr(1)-O(3) bond length is 2.58 Å. The Pr(1)-O(4) bond length is 2.53 Å. The Pr(1)-O(5) bond length is 2.51 Å. The Pr(1)-O(8) bond length is 2.33 Å. There is one shorter (2.50 Å) and one longer (2.72 Å) Pr(1)-O(6) bond length. Si(1) is bonded in a tetrahedral geometry to one C(1), one C(15), one C(22), and one C(8) atom. The Si(1)-C(1) bond length is 1.86 Å. The Si(1)-C(15) bond length is 1.86 Å. The Si(1)-C(22) bond length is 1.86 Å. The Si(1)-C(8) bond length is 1.87 Å. There are twenty-eight inequivalent C sites. In the first C site, C(10) is bonded in a distorted single-bond geometry to one C(8) and one H(6) atom. The C(10)-C(8) bond length is 1.38 Å. The C(10)-H(6) bond length is 0.93 Å. In the second C site, C(1) is bonded in a trigonal planar geometry to one Si(1), one C(2), and one C(3) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(3) bond length is 1.39 Å. In the third C site, C(4) is bonded in a distorted single-bond geometry to one C(6) and one H(3) atom. The C(4)-C(6) bond length is 1.35 Å. The C(4)-H(3) bond length is 0.93 Å. In the fourth C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(4) atom. The C(5)-C(6) bond length is 1.37 Å. The C(5)-H(4) bond length is 0.93 Å. In the fifth C site, C(11) is bonded in a distorted single-bond geometry to one C(13) and one H(7) atom. The C(11)-C(13) bond length is 1.38 Å. The C(11)-H(7) bond length is 0.93 Å. In the sixth C site, C(12) is bonded in a distorted single-bond geometry to one C(13) and one H(8) atom. The C(12)-C(13) bond length is 1.37 Å. The C(12)-H(8) bond length is 0.93 Å. In the seventh C site, C(13) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(14) atom. The C(13)-C(14) bond length is 1.50 Å. In the eighth C site, C(14) is bonded in a bent 120 degrees geometry to one C(13), one O(3), and one O(4) atom. The C(14)-O(3) bond length is 1.28 Å. The C(14)-O(4) bond length is 1.25 Å. In the ninth C site, C(15) is bonded in a trigonal planar geometry to one Si(1), one C(16), and one C(17) atom. The C(15)-C(16) bond length is 1.42 Å. The C(15)-C(17) bond length is 1.36 Å. In the tenth C site, C(16) is bonded in a distorted single-bond geometry to one C(15) and one H(9) atom. The C(16)-H(9) bond length is 0.93 Å. In the eleventh C site, C(17) is bonded in a distorted single-bond geometry to one C(15), one C(18), and one H(10) atom. The C(17)-C(18) bond length is 1.43 Å. The C(17)-H(10) bond length is 0.93 Å. In the twelfth C site, C(18) is bonded in a distorted trigonal planar geometry to one C(17), one C(20), and one H(11) atom. The C(18)-C(20) bond length is 1.37 Å. The C(18)-H(11) bond length is 0.93 Å. In the thirteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(20) and one H(12) atom. The C(19)-C(20) bond length is 1.36 Å. The C(19)-H(12) bond length is 0.93 Å. In the fourteenth C site, C(20) is bonded in a trigonal planar geometry to one C(18), one C(19), and one C(21) atom. The C(20)-C(21) bond length is 1.48 Å. In the fifteenth C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(20), one O(5), and one O(6) atom. The C(21)-O(5) bond length is 1.26 Å. The C(21)-O(6) bond length is 1.29 Å. In the sixteenth C site, C(22) is bonded in a trigonal planar geometry to one Si(1), one C(23), and one C(24) atom. The C(22)-C(23) bond length is 1.37 Å. The C(22)-C(24) bond length is 1.37 Å. In the seventeenth C site, C(23) is bonded in a distorted single-bond geometry to one C(22) and one H(13) atom. The C(23)-H(13) bond length is 0.93 Å. In the eighteenth C site, C(24) is bonded in a distorted single-bond geometry to one C(22) and one H(14) atom. The C(24)-H(14) bond length is 0.93 Å. In the nineteenth C site, C(25) is bonded in a distorted single-bond geometry to one C(27) and one H(15) atom. The C(25)-C(27) bond length is 1.40 Å. The C(25)-H(15) bond length is 0.93 Å. In the twentieth C site, C(26) is bonded in a distorted single-bond geometry to one C(27) and one H(16) atom. The C(26)-C(27) bond length is 1.34 Å. The C(26)-H(16) bond length is 0.93 Å. In the twenty-first C site, C(27) is bonded in a trigonal planar geometry to one C(25), one C(26), and one C(28) atom. The C(27)-C(28) bond length is 1.51 Å. In the twenty-second C site, C(28) is bonded in a distorted bent 120 degrees geometry to one C(27), one O(7), and one O(8) atom. The C(28)-O(7) bond length is 1.29 Å. The C(28)-O(8) bond length is 1.21 Å. In the twenty-third C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1,2) atom. The C(2)-H(1,2) bond length is 0.93 Å. In the twenty-fourth C site, C(3) is bonded in a distorted single-bond geometry to one C(1) and one H(1,2) atom. The C(3)-H(1,2) bond length is 0.93 Å. In the twenty-fifth C site, C(6) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(7) atom. The C(6)-C(7) bond length is 1.52 Å. In the twenty-sixth C site, C(7) is bonded in a bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.26 Å. The C(7)-O(2) bond length is 1.25 Å. In the twenty-seventh C site, C(8) is bonded in a trigonal planar geometry to one Si(1), one C(10), and one C(9) atom. The C(8)-C(9) bond length is 1.36 Å. In the twenty-eighth C site, C(9) is bonded in a distorted single-bond geometry to one C(8) and one H(5) atom. The C(9)-H(5) bond length is 0.93 Å. There are fifteen inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(10) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(12) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(16) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(17) atom. In the tenth H site, H(11) is bonded in a single-bond geometry to one C(18) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(19) atom. In the twelfth H site, H(13) is bonded in a single-bond geometry to one C(23) atom. In the thirteenth H site, H(14) is bonded in a single-bond geometry to one C(24) atom. In the fourteenth H site, H(15) is bonded in a single-bond geometry to one C(25) atom. In the fifteenth H site, H(16) is bonded in a single-bond geometry to one C(26) atom. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a bent 150 degrees geometry to one Pr(1) and one C(28) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Pr(1) and one C(7) atom. In the third O site, O(2) is bonded in a distorted L-shaped geometry to one Pr(1) and one C(7) atom. In the fourth O site, O(3) is bonded in a distorted L-shaped geometry to one Pr(1) and one C(14) atom. In the fifth O site, O(4) is bonded in a distorted L-shaped geometry to one Pr(1) and one C(14) atom. In the sixth O site, O(5) is bonded in a water-like geometry to one Pr(1) and one C(21) atom. In the seventh O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Pr(1) and one C(21) atom. In the eighth O site, O(7) is bonded in a single-bond geometry to one C(28) atom. Linkers: 8 [O]C(=O)c1ccc([Si](c2ccc(C([O])=O)cc2)(c2ccc(C([O])=O)cc2)c2ccc(C([O])=O)cc2)cc1. Metal clusters: 4 [O][C]O[Pr]12(O[C]=O)(O[C]O1)O[C]O[Pr]1(O[C][O])(O[C]=O)(O[C]O1)O[C]O2. RCSR code: flu. The MOF has largest included sphere 7.22 A, density 1.02 g/cm3, surface area 4097.25 m2/g, accessible volume 0.57 cm3/g