کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1327539 | 977486 | 2006 | 5 صفحه PDF | دانلود رایگان |
The reactions of N-heterocyclic carbenes and imidazolium salts towards an anionic gallium(I) heterocycle, [:Ga{[N(Ar)C(H)]2}]−, Ar=C6H3Pr2i-2,6, have been studied. No reactions with N-heterocyclic carbenes were observed, though the reaction of the gallium heterocycle with the imidazolium salt, [HC{N(Mes)C(H)}2]Cl, IMesHCl, Mes = C6H2Me3-2,4,6, led to oxidative insertion of the Ga(I) centre into the imidazolium C–H bond and formation of the gallium hydride complex, [HGa{[N(Ar)C(H)]2}(IMes)]. When this reaction was carried out in the presence of traces of water, partial hydrolysis of [HGa{[N(Ar)C(H)]2}(IMes)] resulted in the formation of the hydroxy-bridged, anionic gallium hydride complex, [{HGa[N(Ar)C(H)]2}2OH][(IMes)2H]. Both compounds have been spectroscopically and structurally characterised.
The reaction of an anionic gallium(I) heterocycle, [:Ga{[N(Ar)C(H)]2}]−, Ar=C6H3Pr2i-2,6, with an imidazolium salt, [HC{N(Mes)C(H)}2]Cl, IMesHCl, Mes = C6H2Me3-2,4,6, leads to oxidative insertion of the gallium(I) centre into the imidazolium C–H bond and the formation of an N-heterocyclic carbene coordinated gallium hydride complex.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 691, Issue 13, 15 June 2006, Pages 3060–3064