title: Bis[4-(trimethylammonio)phenyl] disulfide diiodide acetone solvate.
abstract: The title compound, C(18)H(26)N(2)S(2)(2+).2I(-).2C(3)H(6)O, is an intermediate in the design of the zwitterionic thiolate 4-(trimethylammonio)benzenethiolate (Tab), in which a pair of aryl-substituted S atoms are linked by a covalent bond. The central S-S bond length is 2.020 (3) A and the C(ar)-S-S-C(ar) torsion angle is -84.1 (2) degrees . The crystal structure is stabilized by nonclassical hydrogen bonds which occur as intramolecular C-H...I interactions and intermolecular C-H...S and C-H...O contacts. In the crystal structure, both the dication and the two symmetrically independent iodide counter-anions are located on twofold crystallographic axes, whereas the acetone solvent molecule occupies a general position.
authors.affiliation: School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, Guangdong, People's Republic of China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zhang
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Tang
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Lang
authors.forename: Jin-Xiang
authors.initials: JX
authors.lastname: Chen
mesh_terms: D018360:Crystallography, X-Ray; D004220:Disulfides / Q000737:chemistry*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*
chemical_list: D004220:Disulfides; D000644:Quaternary Ammonium Compounds; C542177:bis(4-(trimethylammonio)phenyl) disulfide diiodide acetone