HgC5H2SO2CH3 is Indium-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four 02329_fluka molecules and two HgC5H2SO2 clusters. In each HgC5H2SO2 cluster, Hg(1) is bonded in a linear geometry to one C(1) and one O(1) atom. The Hg(1)-C(1) bond length is 2.05 Å. The Hg(1)-O(1) bond length is 2.13 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), one C(4), and one H(2) atom. The C(3)-C(2) bond length is 1.42 Å. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(2) bond length is 1.09 Å. In the second C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(4), and one S(1) atom. The C(4)-C(4) bond length is 1.44 Å. The C(4)-S(1) bond length is 1.74 Å. In the third C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(5)-O(1) bond length is 1.31 Å. The C(5)-O(2) bond length is 1.25 Å. In the fourth C site, C(1) is bonded in a trigonal planar geometry to one Hg(1), one C(2), and one S(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-S(1) bond length is 1.72 Å. In the fifth C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one C(3), and one H(1) atom. The C(2)-H(1) bond length is 1.09 Å. There are two 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(3) atom. S(1) is bonded in an L-shaped geometry to one C(1) and one C(4) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Hg(1) and one C(5) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(5) atom. Linkers: 2 [c]1ccc(-c2cc[c]s2)s1 ,4 CC([O])=O. Metal clusters: 4 [Hg]. The MOF has largest included sphere 1.84 A, density 3.10 g/cm3, surface area 2583.75 m2/g, accessible volume 0.08 cm3/g