Analysis of gas phase proton transfer using density functional theory. The H2O · · · HX (X = F, Cl and OH) system

Patricia Pérez, Renato Contreras

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The gas phase proton transfer for the system H2O · · · HX (X = F, Cl and OH) is analyzed in detail using density functional theory. The process is decomposed into H-bonding, ion pairing and dissociation contributions by means of a thermodynamic cycle that uses a water molecule as a proton relay agent. For each step, the energy variations are partitioned into its electrostatic and non-electrostatic contributions. The analysis shows that the principle of maximum hardness is fulfilled for all three processes considered in the proton transfer reaction. The present approach surprisingly yields accurate values for the proton affinity of the F-, Cl- and OH- ions.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalChemical Physics Letters
Volume256
Issue number1-2
DOIs
Publication statusPublished - Jun 1996

ASJC Scopus subject areas

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

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