Reactions of (η5-C5Me4R)(CO)2(MeCN)WMe (R = Me, Et) with HPh2SiC≡CtBu gave the novel alkynyl-bridged W-Si complexes, (η5-C5Me4R)(CO)2W(μ-η1:η2-C≡CtBu)(SiPh2) (R = Me, Et), whose alkynyl ligands bridge the tungsten and silicon atoms in anη1:η2-coordination mode. The structures of these complexes were fully characterized, including X-ray crystallography. Treatment of (η5-C5Me5)(CO)2W(μ-η1:η2-C≡CtBu)(SiPh2) with acetone resulted in acetone insertion into the silicon-alkynyl linkage followed by intramolecular C-H activation of the tBu group to give the chelate-type alkyl-alkene complex,(η5-C5Me5R)(CO)2(η1:η2-CH2CMe2C=CHSiPh2OCMe2).
ASJC Scopus subject areas
- Colloid and Surface Chemistry