Synthesis and Properties of Novel Bis(1,3-benzodithiolium)-Type Dications Containing a Biaryl Unit: New Redox Systems Undergoing Reversible Structural Changes by Electron Transfer
In order to develop new redox systems which undergo reversible structural changes by electron transfer, bis(1,3-benzodithiolium)-type dications (5 2+ ) containing a biaryl unit have been synthesized by hydride abstraction of the corresponding bis(1,3-benzodithiol-2-yl)biaryls (8). Reduction of 5 2+ with zinc gave the corresponding intramolecular cyclization products (6), which reverted to 5 2+ by oxidation