PbCPO3C5H4SO3 is Indium-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four C5H4SO3 clusters and two PbCPO3 clusters. In each C5H4SO3 cluster, there are five inequivalent C sites. In the first C site, C(2) is bonded in a single-bond geometry to one C(3) and one H(1) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-H(1) bond length is 0.93 Å. In the second C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one S(1) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-S(1) bond length is 1.77 Å. In the third C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(2) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(2) bond length is 0.93 Å. In the fourth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one H(3) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(3) bond length is 0.93 Å. In the fifth C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one H(4) atom. The C(6)-H(4) bond length is 0.93 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) 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(6) atom. S(1) is bonded in a distorted trigonal non-coplanar geometry to one C(3), one O(4), one O(5), and one O(6) atom. The S(1)-O(4) bond length is 1.43 Å. The S(1)-O(5) bond length is 1.46 Å. The S(1)-O(6) bond length is 1.44 Å. There are three inequivalent O sites. In the first O site, O(4) is bonded in a single-bond geometry to one S(1) atom. In the second O site, O(5) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(6) is bonded in a single-bond geometry to one S(1) atom. In each PbCPO3 cluster, Pb(1) is bonded in a distorted L-shaped geometry to one O(2) and one O(3) atom. The Pb(1)-O(2) bond length is 2.33 Å. The Pb(1)-O(3) bond length is 2.27 Å. C(1) is bonded in a distorted single-bond geometry to one P(1) atom. The C(1)-P(1) bond length is 1.81 Å. P(1) is bonded in a tetrahedral geometry to one C(1), one O(1), one O(2), and one O(3) atom. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(2) bond length is 1.51 Å. The P(1)-O(3) bond length is 1.54 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1) and one P(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Pb(1) and one P(1) atom. Linkers: 3 [O]P([O])(=O)c1cccc(S([O])([O])[O])c1 ,1 [O]P([O])(=O)c1cccc([S]=O)c1. Metal clusters: 2 O=S(=O)=O.O=S(=O)=O.[O]P1O[Pb]OP([O])O[Pb]O1. RCSR code: sql. The MOF has largest included sphere 6.85 A, density 1.08 g/cm3, surface area 2931.23 m2/g, accessible volume 0.62 cm3/g