3,3,3′,3′-Tetramethyl-1,1′-spirobi[3H-2,1-benzoxaphosph(v)ole]-1-yl radical: evidence of a correlation between pseudorotation and stereoisomerisation

Abstract

It is shown that the factors which determine the E.s.R. studies on phenylphosphoranyl-radicals show that stereoisomerisation of phenylphosphoranyl-radicals are the electronic nature of the other ligands prescribes the similar to those determining the pseudorotation of P V valence state of phosphorus in these radicals.1-3 If one of phosphoranes.these ligands is highly electron-withdrawing (CF,CH,O, C1,