STATIC RESPONSE PROPERTIES OF 2ND-PERIOD ATOMS - COUPLED-CLUSTER CALCULATIONS

Accurate static dipole polarizabilities and hyperpolarizabilities are calculated for the ground states of the boron, carbon, nitrogen, oxyge n and fluorine atoms. Anisotropies are reported for the P-state atoms. The computations are based on a finite-field procedure using energies computed with [10s7p7d6f] basis sets of contracted Gaussian-type func tions and the CCSD(T) method, that is the coupled cluster method in th e space of single and double substitutions Corrected non-iteratively f or the effects of triple substitutions. These are the first electron-c orrelated hyperpolarizabilities reported to date for all but one of th ese atoms.