Slater-Transform-Preuss basis sets for He to Ne and energies for H2, LiH and HF

Slater-Transform-Preuss (STP) functions have been fitted to double-zeta 1s orbitals for elements 2 through 10. For 2s and 2p orbitals it is shown that setting (N-1)/α to a single-zeta value and the use of N=25 to 100, usually 50, results in minimal basis STP energies below fully optimized (Ransil) exponential type calculated values. Six nuclear-centered gaussians were used to expand each STP function to obtain the two-electron integrals giving at least four significant figure accuracy. Calculated energies were - 1.12828 au for H2, 7.97458 au for LiH and - 99.61672 au for HF. (Auth.)