Synthesis and study of platinum silylene complexes of the type (R3P)2Pt=SiMes2 (Mes=2,4,6-trimethylphenyl)

被引：32
|
作者：
Feldman, JD [1 ]
Mitchell, GP [1 ]
Nolte, JO [1 ]
Tilley, TD [1 ]
机构：
[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
来源：
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE | 2003年 / 81卷 / 11期
关键词：
silylene; EXSY; platinum; hydride;
D O I：
10.1139/V03-018
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The synthesis and characterization of neutral platinum silylene complexes (R3P)(2)Pt=SiMes(2) (R = i-Pr (1) or cyclohexyl (2), Mes = 2,4,6-trimethylphenyl) is reported. The dimesitylsilylene ligand in 2 is displaced by a number of ligands including phosphines, alkenes, alkynes, and O-2. Complex 2 reacts with ROH substrates (R = H, Me, Et) to give (Cy3P)(2)Pt and Mes(2)Si(OR)(H) and with H-2 to give trans-(Cy3P)(2)Pt(H)SiHMes(2) (3). Reaction of H(2)SiMes(2) with (Cy3P)(2)Pt gave cis-(Cy3P)(2)Pt(H)SiHMes(2) (4). EXSY NMR experiments of 4 reveal that exchange of silicon and platinum hydrides occurs via reductive elimination - oxidative addition and not via a silylene intermediate.
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收藏
页码：1127 / 1136
页数：10
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