Assessing the Performance of CASPT2 and DFT Methods for the Description of Long, Multicenter Bonding in Dimers between Radical Ions.The performance of a wide variety of density functionals for the description of long, multicenter bonding in dimers between radical ions has been addressed in this work. 
CASPT2
Assessing the Performance of CASPT2 and DFT Methods for the Description of Long, Multicenter Bonding in Dimers between Radical Ions.The performance of a wide variety of density functionals for the description of long, multicenter bonding in dimers between radical ions has been addressed in this work.  The DFT results are benchmarked against RASPT2 calculations based on large active spaces. 
DFT