TlC5H3O3(CH)2 is Indium-derived structured and crystallizes in the orthorhombic Pbca space group. The structure is zero-dimensional and consists of sixteen 02329_fluka molecules and eight TlC5H3O3 clusters. In each TlC5H3O3 cluster, Tl(1) is bonded in a distorted single-bond geometry to one O(1) atom. The Tl(1)-O(1) bond length is 2.71 Å. There are five inequivalent C sites. In the first C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(2) atom. The C(3)-C(2) bond length is 1.41 Å. The C(3)-H(2) bond length is 1.09 Å. In the second C site, C(7) is bonded in a distorted single-bond geometry to one C(2) and one H(5) atom. The C(7)-C(2) bond length is 1.41 Å. The C(7)-H(5) bond length is 1.09 Å. In the third C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.29 Å. In the fourth C site, C(5) is bonded in a distorted single-bond geometry to one O(3) atom. The C(5)-O(3) bond length is 1.35 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(7) atom. There are three inequivalent H sites. In the first H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the second H site, H(1) is bonded in a linear geometry to one O(2) and one O(3) atom. The H(1)-O(2) bond length is 1.53 Å. The H(1)-O(3) bond length is 1.04 Å. In the third H site, H(2) is bonded in a single-bond geometry to one C(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Tl(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one C(1) and one H(1) atom. In the third O site, O(3) is bonded in a water-like geometry to one C(5) and one H(1) atom. Linkers: 8 [O]C(=O)c1ccc(O)cc1. Metal clusters: 4 [OH].[OH].[O][C]=O.[O][C]=O.[Tl].[Tl]. RCSR code: sql. The MOF has largest included sphere 1.82 A, density 3.20 g/cm3, surface area 2172.94 m2/g, accessible volume 0.05 cm3/g