Abstract
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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Kubicki, J.D., Apitz, S.E. & Blake, G.A. 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. Phys Chem Minerals 22, 481–488 (1995). https://doi.org/10.1007/BF00209373
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DOI: https://doi.org/10.1007/BF00209373