Some aspects of the correlation problem using FSGO orbitals

This paper analyzes the use of electric-field-variant (EFV) atomic orbitals in calculations of molecular polarizabilities using the finite field approximation. It is shown that, in the absence of an external electric field, the optimal positions of the orbital centers which minimize the total energy are already shifted with respect to the atomic sites and that these optimal positions constitute a better starting point to compute molecular polarizabilities by the finite field method. The technique is applied to the hydrogen molecule and to the alkane series C, Hz,+z, n = 1 , 2 , 3 , 4 , 5 , 6 in the framework of a floating spherical gaussian orbital-EFv basis.

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Calculations of molecular polarizabilities from electric-field-variant atomic orbitals: An analysis of the problem and its application to the hydrogen molecule and to the alkane series

André

Delhalle

Fripiat

et al. 1988

Int. J. Quantum Chem.

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Some aspects of the correlation problem using FSGO orbitals

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Calculations of molecular polarizabilities from electric-field-variant atomic orbitals: An analysis of the problem and its application to the hydrogen molecule and to the alkane series

Calculations of molecular polarizabilities from electric-field-variant atomic orbitals: An analysis of the problem and its application to the hydrogen molecule and to the alkane series

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