Synthesis, redox behaviour and X-ray structure of bis-TTF containing a pyridine unit as a potential building block in the construction of conducting magnetic materials

The synthesis of singly and doubly bridged bis-TTF containing a 2,6-bis( methylthio) pyridine group as a linker and potentially usable as a ligand for paramagnetic transition metal complexes is reported. Cyclisation leading to doubly bridged bis-TTF has been achieved without using the high dilution technique generally employed in such cases. The redox behaviour of such precursors has been studied by cyclic voltammetry and square wave techniques. The crystal structure of one of these electron donors has been determined by X-ray diffraction showing a stacking arrangement of the TTF units.