Article
Correlated Proton Transfer Potentials. (HO-H-OH)- and (H2O-H-OH2)+
Journal of Molecular Structure: THEOCHEM
(1991)
Abstract
Potentials are computed for the transfer of a proton between two hydroxide anions in (HO-H-OH)− and between two neutral water molecules in (H2O-H-OH2)+ using polarized basis sets of various sizes. SCF transfer barriers are lowered in both complexes by electron correlation. As progressively higher orders of Moller-Plesset perturbation theory are applied, the correction reverses sign and diminishes in magnitude. As a consequence, MP2 results nearly coincide with full fourth-order data. The highest level calculations indicate the transfer barrier of (HO-H-OH)− exceeds that of (H2O-H-OH2)+ by 20–30%. The MP4 calculations agree well with coupled cluster CCD + ST results which include single, double, and triple substitutions to high order.
Keywords
- proton,
- transfer,
- potentials,
- HO,
- H,
- OH,
- H2O,
- OH2
Disciplines
Publication Date
January 1, 1991
Citation Information
Correlated Proton Transfer Potentials. (HO-H-OH)- and (H2O-H-OH2)+
Z. Latajka, S. Scheiner
J. Mol. Struct., Theochem 1991 234, 373-385.