CeC28H12(SO6)2 crystallizes in the trigonal R-3 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to three equivalent O(2), three equivalent O(3), and three equivalent O(4) atoms. All Ce(1)-O(2) bond lengths are 2.47 Å. All Ce(1)-O(3) bond lengths are 2.53 Å. All Ce(1)-O(4) bond lengths are 2.56 Å. In the second Ce site, Ce(2) is bonded in a cuboctahedral geometry to six equivalent O(1) and six equivalent O(2) atoms. All Ce(2)-O(1) bond lengths are 2.63 Å. All Ce(2)-O(2) bond lengths are 2.70 Å. There are fourteen inequivalent C sites. In the first C site, C(12) is bonded in a distorted single-bond geometry to one C(10), one C(13), and one H(6) atom. The C(12)-C(10) bond length is 1.36 Å. The C(12)-C(13) bond length is 1.40 Å. The C(12)-H(6) bond length is 0.93 Å. In the second 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(11) bond length is 1.37 Å. The C(13)-C(14) bond length is 1.50 Å. In the third 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 1.26 Å. The C(14)-O(4) bond length is 1.25 Å. In the fourth C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.48 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(2) bond length is 1.30 Å. In the fifth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(5) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-C(5) bond length is 1.41 Å. In the sixth C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 0.93 Å. In the seventh C site, C(4) is bonded in a distorted single-bond geometry to one C(7) and one H(2) atom. The C(4)-C(7) bond length is 1.40 Å. The C(4)-H(2) bond length is 0.93 Å. In the eighth C site, C(5) is bonded in a distorted single-bond geometry to one C(2), one C(6), and one H(3) atom. The C(5)-C(6) bond length is 1.38 Å. The C(5)-H(3) bond length is 0.93 Å. In the ninth C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one S(1) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-S(1) bond length is 1.76 Å. In the tenth C site, C(7) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(8) atom. The C(7)-C(8) bond length is 1.49 Å. In the eleventh C site, C(8) is bonded in a trigonal planar geometry to one C(10), one C(7), and one C(9) atom. The C(8)-C(10) bond length is 1.43 Å. The C(8)-C(9) bond length is 1.38 Å. In the twelfth C site, C(9) is bonded in a trigonal planar geometry to one C(11), one C(8), and one S(1) atom. The C(9)-C(11) bond length is 1.40 Å. The C(9)-S(1) bond length is 1.76 Å. In the thirteenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(12), one C(8), and one H(4) atom. The C(10)-H(4) bond length is 0.93 Å. In the fourteenth C site, C(11) is bonded in a distorted single-bond geometry to one C(13), one C(9), and one H(5) atom. The C(11)-H(5) bond length is 0.93 Å. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. S(1) is bonded in a distorted bent 120 degrees geometry to one C(6), one C(9), one O(5), and one O(6) atom. The S(1)-O(5) bond length is 1.46 Å. The S(1)-O(6) bond length is 1.45 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ce(2) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Ce(1), one Ce(2), and one C(1) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one Ce(1) and one C(14) atom. In the fourth O site, O(4) is bonded in a distorted L-shaped geometry to one Ce(1) and one C(14) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one S(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one S(1) atom. Linkers: 6 [O]C(=O)c1ccc2c(c1)S(=O)(=O)c1cc(C([O])=O)ccc1-2. Metal clusters: 1 O=[C]O[Ce]12(O[C]=O)(O[C]=O)O[C]O[Ce]34(O[C]O1)(O[C]O2)O[C]O[Ce](O[C]=O)(O[C]=O)(O[C]=O)(O[C]O3)O[C]O4. RCSR code: pcu. The MOF has largest included sphere 13.69 A, density 0.68 g/cm3, surface area 3730.40 m2/g, accessible volume 1.04 cm3/g