Here we report properties of thiophene-rich, acetylide-type mono-, di- and tri-nuclear ruthenium molecularwires 1–4, which are prepared by rationally designed coupling of vinylidene intermediates. Electrochemical analysis of 1–3 reveals fully reversible redox waves, the numbers of which are equal to those of the ruthenium fragments. Spectroelectrochemical analysis of 2 and 3 reveals the clear step-by-step