Issue 11, 2004

Reactions of platinum clusters 195Ptn±, n = 1–24, with N2O studied with isotopically enriched platinum

Abstract

Cationic and anionic clusters 195Ptn±, 1 ≤ n ≤ 24, were generated by laser vaporization using an isotopically enriched platinum sample. The oxidation of the clusters by nitrous oxide under binary collision conditions was investigated as a function of charge and size in a Fourier transform ion cyclotron resonance mass spectrometer. The only reaction observed is sequential addition of an oxygen atom, with the loss of molecular N2. The reaction rates as well as the number of reaction steps exhibit a strong and irregular dependence upon the number of atoms in the cluster and its charge. These results show that isotopically enriched samples allow for the investigation of large cluster sizes together with an unambiguous assignment of reaction products and quantitative determination of rate constants.

Graphical abstract: Reactions of platinum clusters 195Ptn±, n = 1–24, with N2O studied with isotopically enriched platinum

Article information

Article type
Communication
Submitted
07 Apr 2004
Accepted
26 Apr 2004
First published
04 May 2004

Phys. Chem. Chem. Phys., 2004,6, 2910-2913

Reactions of platinum clusters 195Ptn±, n = 1–24, with N2O studied with isotopically enriched platinum

I. Balteanu, O. Petru Balaj, M. K. Beyer and V. E. Bondybey, Phys. Chem. Chem. Phys., 2004, 6, 2910 DOI: 10.1039/B405211K

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