Spectrophotometric study of complexation of benzoyl acetone with [60]- and [70]fullerenes and some other electron acceptors

Abstract

To improve the understanding of the formation of electron donor–acceptor complexes of [60]- and [70]fullerenes, EDA interaction of [60]- and [70]fullerenes and some other electron acceptors with benzoyl acetone were studied in CHCl 3 medium using absorption spectrophotometry. An absorption band due to charge transfer (CT) transition is observed in the visible region. The vertical ionization potential ( I B v ) of the benzoyl acetone was determined from the CT transition energy. Oscillator and transition dipole strengths have also been calculated. Trends in the formation constant for the complexes [60]- and [70]fullerenes with benzoyl acetone were discussed in terms of enthalpies and entropies of formation.