Journal of Chemical Physics, Vol.103, No.1, 309-320, 1995
The Performance of the Explicitly Correlated Coupled-Cluster Method .1. The 4-Electron Systems Be, Li-, and Lih
Keywords:GAUSSIAN-TYPE GEMINALS;MOLECULAR CORRELATION ENERGIES;PLESSET MP2-R12 CALCULATIONS;NONADIABATIC WAVE-FUNCTION;GROUND-STATE;CORRELATION CUSP;BERYLLIUM ATOM;PERTURBATION CALCULATION;HYDROGEN MOLECULE;QUANTUM-CHEMISTRY