Methods are presented for calculating the molecular integral of the title over the Cartesian Gaussians. They compute four-center field or four-center overlap integrals analytically and then perform the numerical integrations. They are faster and more accurate than the Monte Carlo integration method. The contributions of the title for H2, CH4, NH3, H2O, HF, and CO are also evaluated.
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Matsuoka et al. (1980) studied this question.
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