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- 作者：Hiroyuki Sakaba ; Mako Yoshida ; Chizuko Kabuto ; and Kuninobu Kabuto
- 刊名：Journal of the American Chemical Society
- 出版年：2005
- 出版时间：May 25, 2005
- 年：2005
- 卷：127
- 期：20
- 页码：7276 - 7277
- 全文大小：83K
- 年卷期：v.127,no.20(May 25, 2005)
- ISSN：1520-5126
文摘
Reactions of (
5-C5Me4R)(CO)2(MeCN)WMe (R = Me, Et) with HPh2SiC
CtBu gave the novel alkynyl-bridged W-Si complexes, (5-C5Me4R)(CO)2W(
-1:2-CCtBu)(SiPh2) (R = Me, Et), whose alkynyl ligands bridge the tungsten and silicon atoms in an 1:2-coordination mode. The structures of these complexes were fully characterized, including X-ray crystallography. Treatment of (5-C5Me5)(CO)2W(-1:2-CCtBu)(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, (5-C5Me5)(CO)2W(1:2-CH2CMe2C=CHSiPh2O CMe2).
5-C5Me4R)(CO)2(MeCN)WMe (R = Me, Et) with HPh2SiCCtBu gave the novel alkynyl-bridged W-Si complexes, (5-C5Me4R)(CO)2W(-1:2-CCtBu)(SiPh2) (R = Me, Et), whose alkynyl ligands bridge the tungsten and silicon atoms in an 1:2-coordination mode. The structures of these complexes were fully characterized, including X-ray crystallography. Treatment of (5-C5Me5)(CO)2W(-1:2-CCtBu)(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, 5-C5Me5)(CO)2W(1:2-CH2CMe2