Document Detail


Activation of Si-Si and Si-H bonds at Pt: a catalytic hydrogenolysis of silicon-silicon bonds.
MedLine Citation:
PMID:  23340919     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The activation of Ph(2)HSiSiHPh(2) and Me(3)SiSiMe(3) at [Pt(PEt(3))(3)] () yielded the products of oxidative addition. The formation of [Pt(SiHPh(2))(2)(PEt(3))(2)] () as a mixture of the cis and trans isomers appears to proceed quantitatively, whereas a conversion to give cis-[Pt(SiMe(3))(2)(PEt(3))(2)] () was not complete. Treatment of with one equivalent of H(2)SiPh(2) led to cis-and trans-[Pt(H)(SiHPh(2))(PEt(3))(2)] (, ) together with the dinuclear complex [(Et(3)P)(2)(H)Pt(μ-SiPh(2))(μ-η(2)-HSiPh(2))Pt(PEt(3))] (). In contrast, HSiMe(3) reacts with [Pt(PEt(3))(3)] to yield cis-[Pt(H)(SiMe(3))(PEt(3))(2)] () exclusively. Catalytic reactions of dihydrogen with the disilanes Ph(2)HSiSiHPh(2) or Me(3)SiSiMe(3) in the presence of catalytic amounts of [Pt(PEt(3))(3)] () led to the products of hydrogenolysis, H(2)SiPh(2) and HSiMe(3). The conversion of Me(3)SiSiMe(3) is much slower and needs higher temperature to proceed.
Authors:
Jan Voigt; Maren A Chilleck; Thomas Braun
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-23
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9234     ISO Abbreviation:  Dalton Trans     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Chemistry, Humboldt-Universitat Berlin, Brook-Taylor-Str. 2, Berlin, Germany. thomas.braun@cms.hu-berlin.de.
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