Atmospheric Implications for Formation of Clusters of Ammonium and 1−10 Water Molecules
Publication Date
2010
Description
A mixed molecular dynamics/quantum mechanics model has been applied to the ammonium/water clustering system. The use of the high level MP2 calculation method and correlated basis sets, such as aug-cc-pVDZ and aug-cc-pVTZ, lends confidence in the accuracy of the extrapolated energies. These calculations provide electronic and free energies for the formation of clusters of ammonium and 1−10 water molecules at two different temperatures. Structures and thermodynamic values are in good agreement with previous experimental and theoretical results. The estimated concentration of these clusters in the troposphere was calculated using atmospheric amounts of ammonium and water. Results show the favorability of forming these clusters and implications for ion-induced nucleation in the atmosphere.
Journal
The Journal of Physical Chemistry
Volume
114
Issue
12
First Page
4266
Last Page
4271
Department
Chemistry
Link to Published Version
Recommended Citation
Morrell, Thomas E. and Shields, George C.. "Atmospheric Implications for Formation of Clusters of Ammonium and 1−10 Water Molecules." The Journal of Physical Chemistry (2010) : 4266-4271.