Preparation and X-ray crystal structure of µ-iodo-bis(4-iodo-cyclo-hepta-sulphur) tris(hexafluoroantimonate)–bis(arsenic trifluoride), [(S7I)2I]3+[SbF6]–3·2AsF3
Abstract
The reaction of S8, I2, and SbF5 in the appropriate ratios in AsF3 gave essentially quantitative yields of S14I3(SbF6)3·2AsF3, shown by X-ray crystallography to contain the novel cation [(S7I)2I]3+, consisting of two [S7I]+ fragments bridged by a linear S–I–S bond.