Hg2C6H2SO4(CH3)2 is Indium-derived structured and crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of four 02329_fluka molecules and two Hg2C6H2SO4 clusters. In each Hg2C6H2SO4 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 three inequivalent C sites. In the first 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 1.38 Å. The C(1)-S(1) bond length is 1.72 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(3)-O(1) bond length is 1.31 Å. The C(3)-O(2) bond length is 1.25 Å. H(1) is bonded in a single-bond geometry to one C(2) atom. S(1) is bonded in an L-shaped geometry to two equivalent C(1) atoms. 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(3) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(3) atom. Linkers: 2 [c]1cc[c]s1 ,4 CC([O])=O. Metal clusters: 4 [Hg]. The MOF has largest included sphere 1.71 A, density 3.58 g/cm3, surface area 2422.70 m2/g, accessible volume 0.06 cm3/g