Statistics – Applications
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mss..confemh14m&link_type=abstract
"International Symposium On Molecular Spectroscopy, 65th Meeting, Held 21-25 June, 2010 at Ohio State University. http://molspec
Statistics
Applications
Mini-Symposium: Metal Containing Molecules
Scientific paper
In a recent mass spectrometry/photoelectron spectroscopy study on the reactions between W_2O_y^- (y = 2--6) and water, Jarrold and coworkers (J. Chem. Phys., 130, 12431 2009) observed interesting differences in the reactivity of the different cluster ions. Particularly noteworthy is the observation that the only product with the incorporation of hydrogens is a single peak corresponding to W_2O_6H_2^-. As reactions between metal oxide clusters and small molecules such as water have high potential for catalytic applications, we aim to obtain a mechanistic understanding of this observed reactivity. Using electronic structure calculations, we have identified and characterized multiple modes of reactivity between unsaturated tungsten oxide clusters (W_2O_y^- (y = 4--6)) and water. By calculating the free energy corrected reaction profiles, our results provide an explanation for the formation of W_2O_6H_2^-. We propose a mechanism in which water reacts with a metal oxide cluster and eliminates H_2. The results from our calculations show that this is nearly a barrierless process for all sub-oxide clusters with the exception of W_2O_5^-.
Hossain Ekram
Jarrold Caroline Chick
Mayhall Nicholas J.
Raghavachari Krishnan
Rothgeb David W.
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