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Abstract The complex Pt(IPr)(SnBut3)(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)(SnBut3)(κ1-C≡CSiMe3)(H)2, 2. Complex 2 isomerizes to form the unique complex Pt(IPr)[η2-E-(SnBut3)(H)C=C(SiMe3)(H)], 3.… Click to show full abstract
Abstract The complex Pt(IPr)(SnBut3)(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)(SnBut3)(κ1-C≡CSiMe3)(H)2, 2. Complex 2 isomerizes to form the unique complex Pt(IPr)[η2-E-(SnBut3)(H)C=C(SiMe3)(H)], 3. This demonstrates that in addition to functioning as a bulky ligand the SnBut3 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-(SnBut3)(H)C=C(SiMe3)(H), 4. Structures of all compounds have been determined by single crystal x-ray diffraction analyses.
Journal Title: Journal of Organometallic Chemistry
Year Published: 2017
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