Synthesis, characterization and X-ray structures of tetrathiafulvalene-type electron donors bearing one pyridine group

Mono-pyridyl tetrathiafulvalene derivatives have been synthesized by thiolate deprotection-alkylation procedure. Spectroscopic characterization is given as well as their electrochemical properties. Their redox potentials have been studied by cyclic voltametry. As expected, the molecules with m-pyridyl ring are easier to oxidize than molecules with same substituents, bearing p-pyridyl ring. Nine compounds were recrystallized; their structures are presented and discussed. One complex from one molecule of these series was obtained by anodic oxidation method; its synthesis and structure are given.

► Nine tetrathiafulvalene derivatives bearing one pyridine ring are synthesized and characterized.
► The arms are lying on the same side of TTF molecule and the angles with pyridyl are similar.
► An example of copper complex with donor is presented.