Several excited states and thermochemical properties of PHn (n=1–3) – a high level ab initio study Original Research Article

Comparative ab initio calculations at QCISD(T), CCSD(T) and MRCISD levels of theory with four large basis sets were performed on neutrals and some cations of the PHn (n=1–3) species. Some of dissociation and ionization reactions and excited states related to these species were discussed and the results were compared with those of experiments and the earlier theoretical calculations.