A specific change of the electronic and 1C NMR spectra and redox potentials in 1, n-dithia[ n]ferrocenophanes. A novel interaction between the sulphur atom and the ferrocene nucleus

Abstract

Of the 1, n-dithia[ n]ferrocenophanes prepared from disodium 1,1′-ferrocenedithiolate and polymethylene dibromides, the ferrocenophane with n = 7 showed the largest shift in the electronic and 13C NMR spectra and the largest decrease of the redox potential. This can be interpreted by a new type of stereoelectronic interaction between the sulfur atom and the ferrocene nucleus.