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Mono- And hexa-palladium doped silver nanoclusters stabilized by dithiolates

Abstract : The synthesis via a co-reduction method of the first Pd-containing silver-rich 21-metal-atom nanocluster passivated by dithiolates, [PdAg20{S2P(O n Pr)2}12] (1), is reported. 1 is an 8 electron superatom isoelectronic to [Ag21{S2P(O i Pr)2}12] +. Doping of Pd in 1 leads to its high stability against degradation in solution and shows a red emission in MeTHF at 77 K. In addition, we report a multi palladium doped silver nanocluster, [Pd6Ag14(S){S2P(O n Pr)2}12] (2) for the first time. Its X-ray structure exhibits a sulfide-centered Pd6Ag2 rhombohedron surrounded by tweleve additional silver atoms with S6 symmetry. XPS study and DFT calculations indicate that 2 contains Pd(0) and Ag(I) metals. A significant decrease in the electrochemical gap was observed in the SWVs of 2.
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Submitted on : Monday, December 2, 2019 - 2:53:54 PM
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Subrat Barik, Tzu-Hao Chiu, Yu-Chiao Liu, Ming-Hsi Chiang, Franck Gam, et al.. Mono- And hexa-palladium doped silver nanoclusters stabilized by dithiolates. Nanoscale, Royal Society of Chemistry, 2019, 11 (31), pp.14581-14586. ⟨10.1039/c9nr05068j⟩. ⟨hal-02281736⟩



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