Abstract
The problem of calculating diatomic alkaline metal (homo- and heteronuclear) molecules KM (M=Li, Na, K, Rb, Cs) is treated in terms of a pseudopotential approach in the framework of a formally exact model perturbation theory of Rayleigh-Schrödinger type with a test zero-order potential. A Gell-Mann type local model potential is used as a zero-order potential. The results of calculations of energy parameters, in particular, dissociation energies, are given; some of them were obtained for the first time. The calculation demonstrated that two major effects of second-order perturbation theory: polarizing interaction of valence particles across the core and mutual screening of particles must be taken into account to achieve an acceptable accuracy of calculations.
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Hydrometeorological Institute, Odessa. Translated fromZhurnal Strukturnoi Khimii, Vol. 39, No. 2, pp. 222–230, March–April, 1998.
This work was supported by ISSEP grant No. SPU 071013-1997 (A.V.G.).
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Glushkov, A.V., Malinovskii, A.V., Efimov, V.A. et al. Calculation of alkaline metal dimers in terms of model perturbation theory. J Struct Chem 39, 179–185 (1998). https://doi.org/10.1007/BF02873615
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DOI: https://doi.org/10.1007/BF02873615