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Small Gold(I) and Gold(I)-Silver(I) Clusters by C-Si Auration.

ABSTRACT: Auration of o-trimethylsilyl arylphosphines leads to the formation of gold and gold-silver clusters with ortho-metalated phosphines displaying 3c-2e Au-C-M bonds (M=Au/Ag). Hexagold clusters [Au₆ L₄ ](X)₂ are obtained by reaction of (L-TMS)AuCl with AgX, whereas reaction with AgX and Ag₂ O leads to gold-silver clusters [Au₄ Ag₂ L₄ ](X)₂ . Oxo-trigold(I) species [Au₃ O]⁺ were identified as the intermediates in the formation of the silver-doped clusters. Other [Au₅ ], [Au₄ Ag], and [Au₁₂ Ag₄ ] clusters were also obtained. Clusters containing PAu-Au-AuP structural motif display good catalytic activity in the activation of alkynes under homogeneous conditions.

SUBMITTER: Pei XL

PROVIDER: S-EPMC7317441 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Small Gold(I) and Gold(I)-Silver(I) Clusters by C-Si Auration.

Pei Xiao-Li XL Pereira Ana A Smirnova Ekaterina S ES Echavarren Antonio M AM

Chemistry (Weinheim an der Bergstrasse, Germany) 20200511 32

Auration of o-trimethylsilyl arylphosphines leads to the formation of gold and gold-silver clusters with ortho-metalated phosphines displaying 3c-2e Au-C-M bonds (M=Au/Ag). Hexagold clusters [Au6 L4 ](X)2 are obtained by reaction of (L-TMS)AuCl with AgX, whereas reaction with AgX and Ag2 O leads to gold-silver clusters [Au4 Ag2 L4 ](X)2 . Oxo-trigold(I) species [Au3 O]+ were identified a ...[more]

PMID: 32236985

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