Proton mobility in water clusters

• Proton mobility in water occurs quickly according to the so-called Grotthuss mechanism. This process and its elementary reaction steps can be studied in great detail by applying suitable mass spectrometric methods to ionic water clusters. Careful choice of suitable core ions in combination with analysis of cluster size trends in hydrogen/deuterium isotope exchange rates allows for detailed insights into fascinating dynamic systems. Analysis of the experiments has been promoted by extensive and systematic quantum chemical model calculations. Detailed low-energy mechanistic pathways for efficient water rearrangement and proton transfer steps, in particular cases along short preformed "wires" of hydrogen bonds, have been identified in consistency with experimental findings.

Ämnesord

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Nyckelord

mass spectrometry

atmospheric chemistry

heavy water

proton transfer

ion conductivity

pyridine

tropospheric ions

mass-spectrometry

continental air

exchange

pyridine

identification

chemistry

d2o

dissociation

solvation

nner dj

1991

journal of geophysical research-atmospheres

v96

p1023

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)