1,6-Bis(ferrocenyl)-1,3,5-hexatriyne: Novel Preparation and Structural Study

1,6-Bis(ferrocenyl)-1,3,5-hexatriyne (Fc(C⋮C)3Fc)
was prepared from the reaction between 3-(dibromomethylidene)-1,5-bis(ferrocenyl)penta-1,4-diyne and BuLi via an
alkynyl migration in a vinylidene carbenoid mechanism. Both
the title compound and its precusors were thoroughly characterized, and the electronic couplings between two ferrocenyl units
were assessed with voltammetric techniques.