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 salts 6a-b, and merocarbocyanines salts, namely alkylidenthiazolidenium sulfonate salt 5c, and alkylidenthiazolidenium chloride salt 6c. These salts are transformed by dimerization in situ in a voltammetric cell into tetrathiatetraazafulvalenes (TTTAFs) 7a-b, 7'a-b, 8c, and 8'c supposed to be pi-electron donor molecules due to the existing conjugation in their structure. The structure of all new chemically synthesized molecules was confirmed by IR,H-1-NMR, C-13-NMR, and MS. The transformation of salts into TTTAF was confirmed by a reversible voltammogram curve and the variation of observed potentials.

Automated summary

An electrochemical study was conducted on merocyanines salts, which were transformed into TTTAF molecules, identified as pi-electron donor molecules. The structure of the newly synthesized molecules was confirmed using various analytical techniques.