Campus Units
Chemistry
Document Type
Article
Publication Version
Published Version
Publication Date
5-23-2012
Journal or Book Title
Journal of the American Chemical Society
Volume
134
Issue
22
First Page
9154
Last Page
9156
DOI
10.1021/ja302226c
Abstract
Salt metathesis reactions of Cp2(NR2)ZrX (X = Cl, I, OTf) and lithium hydrosilazides ultimately afford hydride products Cp2(NR2)ZrH that suggest unusual β-hydrogen elimination processes. A likely intermediate in one of these reactions, Cp2Zr[N(SiHMe2)t-Bu][N(SiHMe2)2], is isolated under controlled synthetic conditions. Addition of alkali metal salts to this zirconium hydrosilazide compound produces the corresponding zirconium hydride. However as conditions are varied, a number of other pathways are also accessible, including C–H/Si–H dehydrocoupling, γ-abstraction of a CH, and β-abstraction of a SiH. Our observations suggest that the conversion of (hydrosilazido)zirconocene to zirconium hydride and silanimine does not follow the classical four-center mechanism for β-elimination.
Copyright Owner
American Chemical Society
Copyright Date
2012
Language
en
File Format
application/pdf
Recommended Citation
Yan, KaKing; Ellern, Arkady; and Sadow, Aaron D., "Nonclassical β-Hydrogen Elimination of Hydrosilazido Zirconium Compounds via Direct Hydrogen Transfer" (2012). Chemistry Publications. 210.
https://lib.dr.iastate.edu/chem_pubs/210
Comments
Reprinted (adapted) with permission from Journal of the American Chemical Society 134 (2012): 9154, doi: 10.1021/ja302226c. Copyright 2012 American Chemical Society.