Skip to main content
eScholarship
Open Access Publications from the University of California

The hydration structure of dissolved carbon dioxide from X-ray absorption spectroscopy

  • Author(s): Lam, RK
  • England, AH
  • Smith, JW
  • Rizzuto, AM
  • Shih, O
  • Prendergast, D
  • Saykally, RJ
  • et al.
Abstract

Abstract The dissolution of carbon dioxide in water and its subsequent hydrolysis reactions comprise one of the most central processes in all of science, yet it remains incompletely understood despite enormous effort. We report the detailed characterization of dissolved CO2 gas through the combination of X-ray spectroscopy and first principles theory. The molecule acts as a hydrophobe in water with an average hydrogen bond number of 0.56. The carbon atom interacts weakly with a single water at a distance of >2.67 Å and the carbonyl oxygens serve as weak hydrogen bond acceptors, thus locally enhancing the tetrahedral water hydrogen bonding structure.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View