dot
Detailansicht
Katalogkarte GBA
Katalogkarte ISBD
Suche präzisieren
Drucken
Download RIS
Hier klicken, um den Treffer aus der Auswahl zu entfernen
Titel Ab initio studies of O2−(H2O)n and O3−(H2O)n anionic molecular clusters, n≤12
VerfasserIn N. Bork, T. Kurtén, M. B. Enghoff, J. O. P. Pedersen, K. V. Mikkelsen, H. Svensmark
Medientyp Artikel
Sprache Englisch
ISSN 1680-7316
Digitales Dokument URL
Erschienen In: Atmospheric Chemistry and Physics ; 11, no. 14 ; Nr. 11, no. 14 (2011-07-21), S.7133-7142
Datensatznummer 250009936
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/acp-11-7133-2011.pdf
 
Zusammenfassung
An ab initio study of gaseous clusters of O2 and O3 with water is presented. Based on thorough scans of configurational space, we determine the thermodynamics of cluster growth. The results are in good agreement with benchmark computational methods and existing experimental data. We find that anionic O2(H2O)n and O3(H2O)n clusters are thermally stabilized at typical atmospheric conditions for at least n = 5. The first 4 water molecules are strongly bound to the anion due to delocalization of the excess charge while stabilization of more than 4 H2O is due to normal hydrogen bonding. Although clustering up to 12 H2O, we find that the O2 and O3 anions retain at least ca. 80 % of the charge and are located at the surface of the cluster. The O2 and O3 speicies are thus accessible for further reactions. We consider the distributions of cluster sizes as function of altitude before finally, the thermodynamics of a few relevant cluster reactions are considered.
 
Teil von