Anion–π and anion–π-radical interactions in bis(triphenylphosphonium)-naphthalene diimide salts

Abstract

We have conducted a systematic study of anion–π and anion–π-radical interactions in bis(triphenylphosphonium)-naphthalene diimide (BTPP-NDI) salts which was made possible with the synthesis of different anionic analogues. DFT calculations and experimental evidence show anion–π and anion–π-radical interactions and that the cationic π-radical can induce magnetic spin polarization of the anion.