Theoretical study of the interaction d(10)-s(2) between Pt(0) and Tl(I) on the [Pt(PH3)(3)Tl](+) complex

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Theoretical study of the interaction d(10)-s(2) between Pt(0) and Tl(I) on the [Pt(PH3)(3)Tl](+) complex

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Theoretical study of the interaction d(10)-s(2) between Pt(0) and Tl(I) on the [Pt(PH3)(3)Tl](+) complex

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Título: Theoretical study of the interaction d(10)-s(2) between Pt(0) and Tl(I) on the [Pt(PH3)(3)Tl](+) complex
Autor: Mendizábal, Fernando; Zapata Torres, Gerald; Olea Azar, Claudio
Resumen: We studied the attraction between [Pt(PH3)(3)] and Tl(I) in the [Pt(PH3)(3)]-Tl+ complex using ab initio methodology. We found that the changes around the equilibrium distance Pt-Tl and in the interaction energies are sensitive to the electron correlation potential. This effect was evaluated using several levels of theory, including HF, MPn (n = 2-4), CCSD and CCSD(T). The obtained interaction energies differences at the equilibrium distance R-e (Pt-Tl) range from 134 to 205 kJ/mol at the different levels used. At long-distances, the behaviour of the [Pt(PH3)(3)]-Tl+ interaction may be related mainly to charge-induced dipole and dispersion terms, both involving the individual properties of [Pt(PH3)3] and thallium ion. However, the charge-induced dipole term (R -4) is found as the principal contribution in the stability at the long and short distances. The dispersion interaction is smaller, but not negligible near equilibrium distance.
URI: http://www.captura.uchile.cl/handle/2250/2323
Fecha: 2005-09-05
Cita del item: CHEMICAL PHYSICS LETTERS 412 (4-6): 477-481 SEP 5 2005


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