Study of the Electrochemical Behavior of Merocyanine and Merocarbocyanine Salts and Their Transformation into Π-Electron Donor Molecules, Namely Tetrathiatetraazafulvalenes

An electrochemical study using the cyclic voltammetry method was carried out on some previously prepared merocyanines salts, namely thiazolideniumsulfonate salts 5a-b, and thiazolidenium chloride 6a-b, merocarbocyanines alkylidenthiazolidenium sulfonate salt 5c, 6c. These are transformed by dimerization in situ a voltammetric cell into tetrathiatetraazafulvalenes (TTTAFs) 7a-b, 7’a-b, 8c, 8'c supposed to be π-electron donor molecules due existing conjugation their structure. The structure of all new chemically synthesized confirmed IR, 1H-NMR, 13C-NMR, MS. transformation TTTAF reversible voltammogram curve variation observed potentials.