Physics and Chemistry of Minerals

, Volume 22, Issue 8, pp 481–488 | Cite as

G2 theory calculations on [H3SiO4], [H4]SiO4], [H3AlO4]2−, [H4AlO4] and [H5AlO4]: Basis set and electron correlation effects on molecular structures, atomic charges, infrared spectra, and potential energies

  • J. D. Kubicki
  • S. E. Apitz
  • G. A. Blake


G2 theory calculations were performed on [H3SiO4], H4SiO4, [H3AlO4]2−, [H4AlO4], and [H5AlO4]. Molecular structures, atomic charges, and infrared spectra at the HF/6-31G* and MP2/6-31G* levels are compared. The influence of polarization and diffuse functions on the structure of [H3SiO4] is also examined. Basis set and electron correlation effects on potential energies are assessed by comparing various levels of theory. Proton affinities of these gas-phase molecules and related mineral surface species are predicted based on corrections for cluster-size effects.


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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • J. D. Kubicki
    • 1
  • S. E. Apitz
    • 1
  • G. A. Blake
    • 2
  1. 1.NCCOSC RDT & E Div. 521Remediation Research Laboratory, Chemistry and Biochemistry BranchSan DiegoUSA
  2. 2.Division of Geological and Planetary SciencesCalifornia Institute of Technology170-25 PasadenaUSA

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