1. Cation and anion radicals of unsaturated compounds whose molecules contain two phosphorus atoms have been generated electrochemically and their properties studied by ESR methods. 2. These ion radicals are π-electron ...

1. Calculations of the magnetic shielding constants of the protons in the O=PMe3 and S=PMe3 molecules have been carried out. 2. The decisive contribution to the shielding of a proton is made by the C-H bond itself, and it ...