Intermediates and catalytic hydrostannylation. Characterization of a rare complex Pt(IPr)[η2-E-(SnBut 3)(H)CC(SiMe3)(H)]

Anjaneyulu Koppaka, Mohan M. Gamage, Burjor Captain

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The complex Pt(IPr)(SnBut 3)(H), 1 [IPr=N-heterocylic carbene ligand N,N'-bis-(2,6-(diisopropyl)phenyl)imidazol-2-ylidene] reacts with trimethylsilylacetylene to yield the C-H activation product Pt(IPr)(SnBut 3)(κ 1-C≡CSiMe3)(H)2, 2. Complex 2 isomerizes to form the unique complex Pt(IPr)[η 2-E-(SnBut 3)(H)C=C(SiMe3)(H)], 3. This demonstrates that in addition to functioning as a bulky ligand the SnBut 3 group can also be actively involved in catalysis. Compound 1 catalyzes the reaction of trimethylsilylacetylene and tri-t-butylstannane at room temperature to afford the selective hydrostannylated product E-(SnBut 3)(H)C=C(SiMe3)(H), 4. Structures of all compounds have been determined by single crystal x-ray diffraction analyses.

Original languageEnglish (US)
JournalJournal of Organometallic Chemistry
DOIs
StateAccepted/In press - Jan 16 2017

Keywords

  • Bulky ligands
  • Hydrostannylation
  • N heterocyclic carbene, tin, unsaturation, platinum

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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