Synthesis of a stable radical anion via the one electron reduction of a 1,1-bis-phosphinosulfide alkene derivative

摘要

A new type of stable radical ligand featuring a 1,1-bis-phosphinosulfide alkene backbone has been prepared and characterized on the basis of X-ray diffraction, EPR and DFT studies. Organic π-conjugated oligomers or polymers have been extensively studied over the last 30 years, and some of these species show semi-conducting properties or even possess metallic behavior upon doping.1 The introduction of some het-ero-elements such as N or S in these materials, either as end groups or part of the repeating monomeric unit, (such as in poly(thiophene), poly(aniline) or poly(pyrrole)) has proven highly beneficial.