Electrochemical Reduction of Phosphaallenes: Electron Spin Resonance and Theoretical Studies

Abstract

In order to check to what extent allenic systems containing one or two phosphorus atoms are likely to accept an electron, solutions of ArP˭C˭Cφ₂ (Ar Phenyltributyl; φ benzene) and ArP˭C˭PAr have been electrochemically and chemically reduced. Cyclic voltammetry shows that ArP˭C˭Cφ₂ undergoes irreversible reduction at -2266mV in THF while an irreversible reduction takes place at - 1900 mV (THF) for ArP˭C˭PAr.