M. Tian, Jianying Zhang, Haodong Yang
Feb 17, 2020
Citations
0
Influential Citations
12
Citations
Journal
Journal of the American Chemical Society
Abstract
Herein we report the first synthesis of a 1-magnesium-2,3-disilacyclopropene and a related bis(disilenide). Reduction of (boryl)tribromosilane (1, boryl = (HCArN)2B, Ar = 2,6-iPr2C6H3) with magnesium in THF afforded boryl-substituted magnesium complex [(boryl)Si]2Mg(THF)3 (2) in good yield, whereas reduction of (boryl)trichlorosilane (3) with KC8 in THF led to the isolation of bridged alkoxy alkyl bis(disilenide) (THF)K(boryl)Si=Si(boryl)O(CH2)4(boryl)Si=Si(boryl)K(THF) (4) via ring-opening of a THF molecule. X-ray diffraction analy-sis of 2 confirmed the presence of the novel Si2Mg three-membered ring as well as the Si=Si double bond, which existed in a noticeably twisted B-Si-Si-B array. Complex 2 also represents the first reported example of a stable disilyne dianion.