A series of five diruthenium diethynyl complexes based on α,β-fused oligothienoacenes in the core of the bridging ligands [{Ru(dppe)Cp∗}2(μ-C=C-L-C=C)] [dppe = 1,2-bis(diphenylphosphino)ethane, Cp∗ = η5-C5Me5; L = thieno[3,2-b]thiophene (4), thieno[2,3-b]thiophene (5), 3,4-dimethylthieno[2,3-b]thiophene (6), dithieno[3,2-b:2′,3′-d]thiophene (7), and thieno[3,2-b]thieno[2′,3′:4,5]thieno[2,3-d]thiophene (8)] have been synthesized and fully characterized electrochemically and spectroscopically. Elongation of the redox noninnocent oligoth...
