The
performance of non-empirically tuned long-range corrected hybrid
functionals for the prediction of vertical ionization potentials (IPs)
and electron affinities (EAs) is assessed for a set of 24 organic
acceptor molecules. Basis set-extrapolated coupled cluster singles,
doubles, and perturbative triples [CCSD(T)] calculations serve as
a reference for this study. Compared to standard exchange-correlation
functionals, tuned long-range corrected hybrid functionals produce
highly reliable results for vertical IPs and EAs, yielding mean absolute
errors on par with computationally more demanding <i>GW</i> calculations. In particular, it is demonstrated that long-range
corrected hybrid functionals serve as ideal starting points for non-self-consistent <i>GW</i> calculations
