Hydrogen-substituted osmium silylene complexes: Effect of charge localization on catalytic hydrosilation

被引:118
作者
Hayes, PG
Beddie, C
Hall, MB [1 ]
Waterman, R
Tilley, TD
机构
[1] Texas A&M Univ, College Stn, TX 77843 USA
[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
关键词
D O I
10.1021/ja057494q
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Addition of bulky primary silanes to the osmium benzyl compound, Cp*(iPr3P)OsCH2Ph, afforded two neutral hydrogen-substituted silylene complexes via activation of two Si-H bonds. These species have been structurally characterized, and their reactivity has been examined experimentally and computationally. Comparison of these neutral silylene complexes with their cationic analogue highlights the dramatic influence of charge distribution on the reaction chemistry of metal silylene complexes. Copyright © 2006 American Chemical Society.
引用
收藏
页码:428 / 429
页数:2
相关论文
共 21 条
[1]   A theoretical investigation of ruthenium-catalyzed alkene hydrosilation: Evidence to support an exciting new mechanistic proposal [J].
Beddie, C ;
Hall, MB .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (42) :13564-13565
[2]   Homogeneous catalyst systems with organosilicon components for olefin metathesis [J].
Bespalova, NB ;
Bovina, MA ;
Popov, AV ;
Mol, JC .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 160 (01) :157-164
[3]  
Brown H.C., 1972, BORANES ORGANIC CHEM
[4]   Reduction of Imines by hydroxycyclopentadienyl ruthenium hydride: Intramolecular trapping evidence for hydride and proton transfer outside the coordination sphere of the metal [J].
Casey, CP ;
Bikzhanova, GA ;
Cui, Q ;
Guzei, IA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (40) :14062-14071
[5]  
FRISCH MJ, 2004, GAUSSIAN 03 REV B 04
[6]   Catalytic hydrosilylation of alkenes by a ruthenium silylene complex. Evidence for new hydrosilylation mechanism [J].
Glaser, PB ;
Tilley, TD .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (45) :13640-13641
[7]  
GRUBINE SK, 1998, ORGANOMETALLICS, V17, P5607
[8]  
Lewis K.M., 1993, Catalyzed Direct Reactions of Silicon
[9]  
Mitchell GP, 1998, ANGEW CHEM INT EDIT, V37, P2524, DOI 10.1002/(SICI)1521-3773(19981002)37:18<2524::AID-ANIE2524>3.0.CO
[10]  
2-H