- A general route to five-coordinate hydridosilicates
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Five-coordinate potassium hydridosilicates, - K+ (R=Et, i-Pr, Ph), have been obtained in good yield from the reaction of a trialkoxy- or triaryloxy-silane with the corresponding potassium alkoxide or aryloxide, and characterized spectroscopically.Reaction of the hydrosilicates with an excess of Grignard reagent gives the corresponding triorganosilanes.
- Becker, B.,Corriu, R.,Guerin, C.,Henner, B.,Wang, Q.
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- Five-coordinate potassium dihydridosilicates: synthesis and some aspects of their reactivity
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Five-coordinate potassium dihydridosilicates, K+- (R = Et, i-Pr) have been obtained by reaction of a trialkoxysilane with potassium hydride.Reaction of the dihydridosilicate with an excess of a Grignard reagent gives the corresponding diorganosilane.The ease of reduction of carbonyl compounds by the dihydridosilicate in the absence of a catalyst is indicative of the high reactivity of the Si-H bond in such species.
- Becker, B.,Corriu, R. J. P.,Guerin, C.,Henner, B.,Wang, Q.
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p. C25 - C28
(2007/10/02)
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- New hexacoordinate silicon complexes, the process for their preparation and their application
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The present invention relates to new hexacoordinate silicon complexes, the process for their preparation and their application. These new complexes correspond to the general formula I: STR1 in which: A represents an alkali metal or alkaline earth metal except for magnesium, and n=0 or 1.
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- Hypervalent silicon hydrides: evidence for their intermediacy in the exchange reactions of di- and tri-hydrogenosilanes catalysed by hydrides (NaH, KH and LiAlH4)
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Di and tri-hydrogenosilanes, RR'SiH2 and RSiH3 (R=aryl, allyl or benzyl; R'=aryl or alkyl), readily undergo exchange reactions, involving silicon-carbon bonds and silicon-hydrogen bonds, in the presence of hydrides (LiAlH4, KH and NaH) as catalysts.These results are discussed in terms of five-coordinate silicon hydrides as intermediates in the reaction.
- Becker, B.,Corriu, R. J. P.,Guerin, C.,Henner, B. J. L.
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p. 147 - 154
(2007/10/02)
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