Formation of Pdn(SR)m clusters (n < 60) in the reactions of PdCl2 and RSH (R = n-C18H37, n-C12H25)

Yuichi Negishi, Haruno Murayama, Tatsuya Tsukuda

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30 Citations (Scopus)

Abstract

Mass spectroscopic analysis revealed that Pd clusters passivated by thiolates and the stoichiometric thiolate complexes, Pdn=(SR)2n (n = 5; 6), are formed in the reactions between palladium chloride and n-alkanethiols (RSH: R = n-C18H37, n-C12H25) in toluene. The Pd clusters thus formed are formulated as Pdn(SR)m with m ∼ 0.6n. The cluster sizes, distributed in the range of 5 ≤ n ≤ 60, are consistent with their core diameters of ∼ 1 nm observed by TEM. A gap of ∼ 2 eV was observed in the optical transition of the Pdn(SR)m clusters showing the emergence of non-metallic properties as a result of size reduction.

Original languageEnglish
Pages (from-to)561-566
Number of pages6
JournalChemical Physics Letters
Volume366
Issue number5-6
DOIs
Publication statusPublished - Dec 20 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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