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Issue 84, 2015
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1,2-Halosilane vs. 1,2-alkylborane elimination from (boryl)(silyl) complexes of iron: switching between borylenes and silylenes just by changing the alkyl group

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Abstract

Reaction of different combinations of aryl(dihalo)boranes and trialkylsilyl iron metallates, a route previously used to prepare a terminal iron arylborylene complex, is found to lead to three distinct new reaction outcomes, including unselective decomposition, an inert iron(II) (boryl)(silyl) complex, and a dinuclear bis(μ-silylene) complex. The latter result is to our knowledge the first example of a 1,2-alkylborane elimination, in contrast to the facile and ubiquitous 1,1-alkylborane elimination observed from (alkyl)(boryl) transition metal complexes, and is also a novel route to bridging silylene complexes.

Graphical abstract: 1,2-Halosilane vs. 1,2-alkylborane elimination from (boryl)(silyl) complexes of iron: switching between borylenes and silylenes just by changing the alkyl group

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Article information


Submitted
31 Jul 2015
Accepted
28 Aug 2015
First published
08 Sep 2015

Chem. Commun., 2015,51, 15465-15468
Article type
Communication

1,2-Halosilane vs. 1,2-alkylborane elimination from (boryl)(silyl) complexes of iron: switching between borylenes and silylenes just by changing the alkyl group

H. Braunschweig, R. D. Dewhurst, K. Radacki, B. Wennemann and Q. Ye, Chem. Commun., 2015, 51, 15465
DOI: 10.1039/C5CC06425B

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