Coordination Assembling for Derivatives of Tetrathiafulvalene(TTF)

Derivatives of tetrathiafulvalene (TTF) and dithiolene have been interested for a long time for their unusual electrical, magnetic and optical properties. Recently, a new type of dithiolate ligands, that fused with the structure of TTF, has been received more attention. These eight sulfur containing ligands have an extended conjugating systems and show good properties in donor acceptor behaviors, that imply a good potential applications to material chemistry. Due to the strong coordination of sulfur to metal ions, molecular design or crystal engineering of these sulfur rich ligands is attractive to inorganic chemists. This short review presents an introduction with emphases on recent developments in this area, including: coordination assembly of tetraalkylsulfanyl substituted TTF, [(RS)2TTF(SR)2], based on structures of cuprous halide; molecular design of metal complexes about bisalkylsulfanyl dimercapto substituted TTF and tetra mercapto substituted TTF ([(RS)2TTF(S)2]2- and [(S)2TTF(S)2]4-). The coordination assembly of these compounds showed alterable structures and some of them were found having good physical properties.