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Synthesis and spectral characterization of diorganodiaminosilanes [(ArNH)(2)SiPhMe] (Ar=2,6-(Pr2C6H3)-Pr-i; 2,4,6-Me3C6H2) and lithium silylamide [(2,6-Et2C6H3NLi)(2,6-Et2C6H3NH)SiPh2]

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Title Synthesis and spectral characterization of diorganodiaminosilanes [(ArNH)(2)SiPhMe] (Ar=2,6-(Pr2C6H3)-Pr-i; 2,4,6-Me3C6H2) and lithium silylamide [(2,6-Et2C6H3NLi)(2,6-Et2C6H3NH)SiPh2]
 
Creator PALANISAMI, N
MURUGAVEL, R
 
Subject precursors
bulky
aminosilanes
half-sandwich lithium
nmr spectroscopy
x-ray diffraction
 
Description Aminosilanes bearing bulky substituents on nitrogen centers, [(ArNH)(2)SiPhMe] (Ar = 2,6-(Pr2C6H3)-Pr-i (1), 2,4,6-Me3C6H2 (2)) and half-sandwich lithium silylamide [(2,6-Et2C6H3NLi)(2,6-Et2C6H3NH)SiPh2] (3) have been prepared and characterized by elemental analysis, IR, EI mass and NMR (H-1 and Si-29) spectroscopic studies. The solid state structures of 2 and 3 have been determined by single crystal X-ray diffraction studies. The molecule 2 has a C-1 symmetry due to the steric crowding, and the two N-H protons are approximately trans to each other. The amido nitrogen atoms in 2 show significant deviation from trigonal-planar geometry, and as a result, the observed Si-N bonds are marginally longer than those observed in aminosilanes with planar nitrogen atoms. The molecule 3 exists as discrete dimer with an inversion center. The Li ion in 3 forms intramolecular pi-complex with the neighboring aryl (2,6-Et2C6H3) group, to form a half-sandwich lithium silylamide. (c) 2006
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-28T22:48:47Z
2011-12-26T12:47:40Z
2011-12-27T05:38:09Z
2011-07-28T22:48:47Z
2011-12-26T12:47:40Z
2011-12-27T05:38:09Z
2006
 
Type Article
 
Identifier JOURNAL OF ORGANOMETALLIC CHEMISTRY, 691(15), 3260-3266
0022-328X
http://dx.doi.org/10.1016/j.jorganchem.2006.03.039
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7517
http://hdl.handle.net/10054/7517
 
Language en