Accurate universal basis set for H through Xe for Hartree–Fock calculations

Universal basis sets for low-lying excited states of some positive and negative ions

The generator coordinate Hartree-Fock method is used to generate universal basis sets (UBSs) of Gaussian- and Slater-type functions for low-lying excited states of some mono-positive and -negative ions. From our basis sets the total energies are calculated and compared with the corresponding results obtained with other UBSs and with fully-optimized basis sets of STFs.

Adapted Gaussian basis sets for atoms from Li through Xe generated with the generator coordinate Hartree-Fock method

The generator coordinate Hartree-Fock method is used to generate adapted Gaussian basis sets for the atoms from Li (Z=3) through Xe (Z=54). In this method the Griffin-Hill-Wheeler-Hartree-Fock equations are integrated through the integral discretization technique. The wave functions generated in this work are compared with the widely used Roothaan-Hartree-Fock wave functions of Clementi and Roetti (1974), and with other basis sets reported in the literature. For all atoms studied, the errors in our total energy values relatively to the numerical Hartree-Fock limits are always less than 7.426 mhartree.