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

doi:10.1016/S0009-2614(02)01643-3

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

Yuichi Negishi, Haruno Murayama, Tatsuya Tsukuda

Multidisciplinary chemistry

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Mass spectroscopic analysis revealed that Pd clusters passivated by thiolates and the stoichiometric thiolate complexes, Pd_n=(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 Pd_n(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 Pd_n(SR)_m clusters showing the emergence of non-metallic properties as a result of size reduction.

Original language	English
Pages (from-to)	561-566
Number of pages	6
Journal	Chemical Physics Letters
Volume	366
Issue number	5-6
DOIs	https://doi.org/10.1016/S0009-2614(02)01643-3
Publication status	Published - Dec 20 2002

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/S0009-2614(02)01643-3

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

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.",

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T1 - Formation of Pdn(SR)m clusters (n < 60) in the reactions of PdCl2 and RSH (R = n-C18H37, n-C12H25)

AU - Negishi, Yuichi

AU - Murayama, Haruno

AU - Tsukuda, Tatsuya

PY - 2002/12/20

Y1 - 2002/12/20

N2 - 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.

AB - 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.

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

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