Non-Born-Oppenheimer molecular structure and one-particle densities for H2D+

Mauricio Cafiero, Ludwik Adamowicz

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


We show that the nonadiabatic (non-Born-Oppenheimer) ground state of a three-nuclei system can be effectively calculated with the use of an explicitly correlated Gaussian basis set with floating centers. Sample calculations performed for the H2D+ system with various basis set sizes show good convergence with respect to both the total energy and the expectation values of the internuclear distances (molecular geometry), the distances between the nuclei and the electrons, and between the electrons. We also provide a derivation of the formulas for one-particle density calculations and some density plots showing the spatial distribution of the H2D+ nuclear and electronic densities.

Original languageEnglish (US)
Article number184305
JournalJournal of Chemical Physics
Issue number18
StatePublished - May 8 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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