Tetrakis(ferrocenylethynyl)ethene: Synthesis, (Spectro)electrochemical and quantum chemical characterisation

Tetrakis(ferrocenylethynyl)ethane (1) has been prepared in four steps from ethynyl ferrocene. Four individual redox processes could be resolved by selection of an appropriate non-coordinating electrolyte. Spectroelectro- and quantum-chemical investigations of the monocation [1]+ suggested charge localisation to single ferrocene moiety occurs on oxidation.252