Adapted Gaussian basis sets for ions with N≤54

Abstract Adapted Gaussian basis sets are reported for the cations He + –Xe + and anions H − –I − using the generator coordinate Hartree–Fock method of selecting orbital exponents. For all ions studied, our wavefunctions are an improvement over those of da Silva and Trsic using a universal Gaussian basis set. Beside this, our ground state total energy values do not differ from the corresponding numerical Hartree–Fock values by more than 4.562 mhartree for the cations and anions.