Pr2C4H4SO14(CH2)4 crystallizes in the monoclinic P2_1/c space group. The structure consists of sixteen 02329_fluka molecules inside a Pr2C4H4SO14 framework. In the Pr2C4H4SO14 framework, there are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(12), one O(2), one O(3), one O(5), one O(9), and two equivalent O(13) atoms. The Pr(1)-O(1) bond length is 2.54 Å. The Pr(1)-O(10) bond length is 2.50 Å. The Pr(1)-O(12) bond length is 2.63 Å. The Pr(1)-O(2) bond length is 2.58 Å. The Pr(1)-O(3) bond length is 2.54 Å. The Pr(1)-O(5) bond length is 2.45 Å. The Pr(1)-O(9) bond length is 2.49 Å. There is one shorter (2.44 Å) and one longer (2.67 Å) Pr(1)-O(13) bond length. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one O(1), one O(14), one O(2), one O(4), one O(6), one O(7), one O(8), and two equivalent O(11) atoms. The Pr(2)-O(1) bond length is 2.62 Å. The Pr(2)-O(14) bond length is 2.53 Å. The Pr(2)-O(2) bond length is 2.50 Å. The Pr(2)-O(4) bond length is 2.54 Å. The Pr(2)-O(6) bond length is 2.58 Å. The Pr(2)-O(7) bond length is 2.48 Å. The Pr(2)-O(8) bond length is 2.45 Å. There is one shorter (2.47 Å) and one longer (2.57 Å) Pr(2)-O(11) bond length. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(4) atom. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(4) bond length is 1.28 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(12) and one O(2) atom. The C(2)-O(12) bond length is 1.27 Å. The C(2)-O(2) bond length is 1.29 Å. In the third C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(14) atom. The C(4)-O(11) bond length is 1.30 Å. The C(4)-O(14) bond length is 1.27 Å. In the fourth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one O(13) and one O(9) atom. The C(6)-O(13) bond length is 1.29 Å. The C(6)-O(9) bond length is 1.27 Å. There are four inequivalent H sites. In the first H site, H(3) is bonded in a distorted single-bond geometry to one O(4) and one O(7) atom. The H(3)-O(4) bond length is 1.64 Å. The H(3)-O(7) bond length is 1.00 Å. In the second H site, H(4) is bonded in a single-bond geometry to one O(7) atom. The H(4)-O(7) bond length is 0.99 Å. In the third H site, H(5) is bonded in a distorted single-bond geometry to one O(10) atom. The H(5)-O(10) bond length is 1.00 Å. In the fourth H site, H(6) is bonded in a single-bond geometry to one O(10) atom. The H(6)-O(10) bond length is 0.99 Å. S(1) is bonded in a tetrahedral geometry to one O(3), one O(5), one O(6), and one O(8) atom. The S(1)-O(3) bond length is 1.50 Å. The S(1)-O(5) bond length is 1.48 Å. The S(1)-O(6) bond length is 1.50 Å. The S(1)-O(8) bond length is 1.48 Å. There are fourteen inequivalent O sites. In the first O site, O(10) is bonded in a water-like geometry to one Pr(1), one H(5), and one H(6) atom. In the second O site, O(11) is bonded in a distorted single-bond geometry to two equivalent Pr(2) and one C(4) atom. In the third O site, O(12) is bonded in a 1-coordinate geometry to one Pr(1) and one C(2) atom. In the fourth O site, O(13) is bonded in a distorted single-bond geometry to two equivalent Pr(1) and one C(6) atom. In the fifth O site, O(14) is bonded in a distorted single-bond geometry to one Pr(2) and one C(4) atom. In the sixth O site, O(1) is bonded in a distorted single-bond geometry to one Pr(1), one Pr(2), and one C(1) atom. In the seventh O site, O(2) is bonded in a distorted single-bond geometry to one Pr(1), one Pr(2), and one C(2) atom. In the eighth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Pr(1) and one S(1) atom. In the ninth O site, O(4) is bonded in a 3-coordinate geometry to one Pr(2), one C(1), and one H(3) atom. In the tenth O site, O(5) is bonded in a bent 150 degrees geometry to one Pr(1) and one S(1) atom. In the eleventh O site, O(6) is bonded in a distorted single-bond geometry to one Pr(2) and one S(1) atom. In the twelfth O site, O(7) is bonded in a water-like geometry to one Pr(2), one H(3), and one H(4) atom. In the thirteenth O site, O(8) is bonded in a bent 150 degrees geometry to one Pr(2) and one S(1) atom. In the fourteenth O site, O(9) is bonded in a distorted water-like geometry to one Pr(1) and one C(6) atom. Linkers: 8 [O]C(=O)CCC([O])=O. Metal clusters: 8 [Pr]. The MOF has largest included sphere 1.61 A, density 2.88 g/cm3, surface area 2137.65 m2/g, accessible volume 0.06 cm3/g