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. Issue 84 (8th September 2015)

• Record Type: Journal Article
• Authors: Braunschweig, Holger; Dewhurst, Rian D.; Radacki, Krzysztof; Wennemann, Benedikt; Ye, Qing
• Is Part Of: Chemical communications. Volume 51:Issue 84(2015)
• Page Start: 15465
• Page End: 15468
• Publication Date: 2015-09-08
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c5cc06425b
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The results present a new elimination reaction, the 1, 2-alkylborane elimination, as a new route to silylene complexes. 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.