All that glitters…︁The gas-phase reactions of the bimetallic cluster ions PtmAun+ (m+n≤4) with dioxygen and methane are investigated. The platinum-rich cluster ions undergo degradation processes and dehydrogenation reactions, which are also known for pure Ptm+ clusters. In contrast, the gold-rich cluster ions are found to be unreactive, similar to the corresponding Aum+ clusters. This distinct trend in reactivity (see graphic) is correlated with the systems' electronic properties changing as a function of cluster composition.
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Koszinowski et al. (2003) studied this question.
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