作者:Lise Baiget、Henri Ranaivonjatovo、Jean Escudié、Gabriela Cretiu Nemes、Ioan Silaghi-Dumitrescu、Luminita Silaghi-Dumitrescu
DOI:10.1016/j.jorganchem.2004.09.022
日期:2005.1
Dechlorofluorination of ArSb(F)-C(Cl) = CR2 (CR2 = fluorenylidene, Ar = 2,4,6-tri-tert-butylphenyl) by tert-butyllithium afforded a 3,4-bis(fluorenylidene)-1,2-distibacyclobutane. The formation of the latter probably involves the transient stibaallene ArSb = C = CR2 followed by a head-to-head dimerization via two Sb = C double bonds. Molecular orbital calculations at the ab initio and DFT levels support the head-to-head dimerization of ArSb = C = CR2 with the formation of a 1,2-distibacyclobutane. (C) 2004 Elsevier B.V. All rights reserved.