An Investigation of the BSSE Effect on the Evaluation of Ab Initio Interaction Energies for Cisplatin-Water Complexes

نویسندگان

  • Juliana Fedoce Lopes
  • Willian R. Rocha
  • Hélio F. dos Santos
چکیده

No presente artigo o efeito do pseudopotencial de caroço (ECP) para o átomo de platina no erro de sobreposição de base (BSSE) foi avaliado para as energias de interação entre o complexo cisplatina ([Pt(NH 3 ) 2 Cl 2 ]) e água. Oito orientações espaciais distintas para os monômeros cisplatina-água foram consideradas na determinação do BSSE utilizando o procedimento padrão “counterpoise”. O BSSE foi também avaliado ao longo das curvas de energia potencial, as quais são importantes para a determinação dos parâmetros do potencial de Lennard-Jones. Os cálculos foram feitos em diferentes níveis de teoria, incluindo HF, DFT (funcionais: BLYP, B3LYP, BP86, PBE, PW91) e MP2 com conjunto de funções de base do tipo “split-valence” de Pople e “correlated consistent” de Dunning.

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تاریخ انتشار 2010