論文

査読有り
2019年6月

Influence of a Co-immobilized Tertiary Amine on the Structure and Reactivity of a Rh Complex: Accelerating Effect on Heterogeneous Hydrosilylation

JOURNAL OF PHYSICAL CHEMISTRY C
  • Maeda, Kyogo
  • ,
  • Uemura, Yohei
  • ,
  • Kim, Minjune
  • ,
  • Nakajima, Kiyotaka
  • ,
  • Tanaka, Shinji
  • ,
  • Chun, Wang-Jae
  • ,
  • Motokura, Ken

123
23
開始ページ
14556
終了ページ
14563
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.jpcc.9b03280
出版者・発行元
AMER CHEMICAL SOC

Co-immobilization of a Rh complex and a tertiary amine on the same silica surface enhances the hydrosilylation reaction of olefins. In our previous study, the silica-supported Rh complex-tertiary amine catalyst (SiO2/Rh-NEt2) showed higher activity than a silica-supported Rh complex (SiO2/Rh) alone. Herein, the influence of the amine on the local structure of the Rh complex was evaluated by DNP-enhanced solid-state N-15 NMR spectroscopy and Rh K-edge XAFS measured at 20 K. The amine distorts the structure of the cyclooctadiene (COD) ligand in the Rh complex immobilized on the silica surface. The reactivity of the COD ligand with hydrosilane was confirmed by the in situ FTIR spectra, and it was found that the presence of an amine facilitates COD dissociation from the Rh center.This phenomenon accelerates the ligand exchange process in Rh-catalyzed hydrosilylation.


リンク情報
DOI
https://doi.org/10.1021/acs.jpcc.9b03280
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000471834000050&DestApp=WOS_CPL
ID情報
  • DOI : 10.1021/acs.jpcc.9b03280
  • ISSN : 1932-7447
  • Web of Science ID : WOS:000471834000050

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