Synthesis and properties of 4′,5′-bis(methylthio)-4,5-bis(2-pyridylethynyl)tetrathiafulvalene and its copper complexes

Synthesis of redox-active bis-pyridine ligand, 4′,5′-bis(methylthio)-4,5-bis(2-pyridylethynyl)tetrathiafulvalene (1) has been carried out in moderate yield starting from the corresponding diiodide. Bis(pyridylethynyl)–TTF 1 forms 1:1 complexes with Cu(I) and Cu(II) salts. Occurrence of the charge transfer from the TTF moiety to the copper atom was found to depend on the environment of copper atom.

Figure optionsDownload as PowerPoint slide