The preparation, structure, and reactivity of benzo-annelated cyclic polysulfides, which principally contain five- and seven-membered rings, are described together with the chemistry of their related compounds. The stereochemistry of benzopentathiepins and the electrochemistry of benzotrithioles are also discussed.
Keywords: Benzo-annelated cyclic polysulfides, chalcogen atom, phthalocyanine, stereochemistry, electrochemistry, unstable intermediate