LaC6H5S2O9 crystallizes in the triclinic P-1 space group. La(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. The La(1)-O(1) bond length is 2.30 Å. The La(1)-O(2) bond length is 2.73 Å. The La(1)-O(3) bond length is 2.61 Å. The La(1)-O(4) bond length is 2.52 Å. The La(1)-O(6) bond length is 2.49 Å. The La(1)-O(7) bond length is 2.49 Å. The La(1)-O(8) bond length is 2.49 Å. The La(1)-O(9) bond length is 2.61 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one O(1) atom. The C(1)-O(1) bond length is 1.32 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(3) and one O(2) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-O(2) bond length is 1.37 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one S(1) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-S(1) bond length is 1.77 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one C(5), and one H(4) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(4) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one S(2) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-S(2) bond length is 1.76 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one H(5) atom. The C(6)-H(5) bond length is 1.09 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) atom. The H(1)-O(2) bond length is 1.00 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(9) atom. The H(2)-O(9) bond length is 0.98 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(9) atom. The H(3)-O(9) bond length is 0.99 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted trigonal non-coplanar geometry to one C(3), one O(3), one O(4), and one O(5) atom. The S(1)-O(3) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.49 Å. The S(1)-O(5) bond length is 1.45 Å. In the second S site, S(2) is bonded in a distorted trigonal non-coplanar geometry to one C(5), one O(6), one O(7), and one O(8) atom. The S(2)-O(6) bond length is 1.48 Å. The S(2)-O(7) bond length is 1.47 Å. The S(2)-O(8) bond length is 1.48 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one La(1), one C(2), and one H(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one La(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one La(1) and one S(1) 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 distorted bent 120 degrees geometry to one La(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one La(1) and one S(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one La(1) and one S(2) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one La(1), one H(2), and one H(3) atom. Linkers: 2 [O]c1cc(S([O])([O])[O])cc(S([O])([O])[O])c1O. Metal clusters: 2 [La]. The MOF has largest included sphere 3.16 A, density 2.60 g/cm3, surface area 2361.92 m2/g, accessible volume 0.07 cm3/g