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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >The variable reaction behaviour of base-free tris(trimethylsilyl)methyl lithium with trihalogenides of earth-metals and iron [German]
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The variable reaction behaviour of base-free tris(trimethylsilyl)methyl lithium with trihalogenides of earth-metals and iron [German]

机译:无碱三(三甲基甲硅烷基)甲基锂与稀土金属和铁的三卤化物的可变反应行为[德国]

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摘要

Base-free tris(trimethylsilyl)methyl Lithium, Tsi-Li, reacts with the earth-metal trihalogenides (MHal(3) with M = Al, Ga, In and Hal = Cl, Br, I) primarily to give the metallates [Tsi-MHal(3)]Li. Simultaneous to this simple metathesis a methylation also takes place, mainly with heavier halogenides of Ga and In with excess Tsi-Li, forming the mono and dimethyl compounds Tsi-M(Me)Hal (M = Ga, In; Hal = I), Tsi-MMe2 (M=Ga), and the bis(trisyl) derivative (Tsi)(2)InMe, respectively and the main by-product 1,3-disilacyclobutane. Representatives of each type of compound have been isolated by fractionating crystallizations or sublimations and characterized by spectroscopic methods (H-1, C-13, Si-29 NMR, IR, Raman) and X-ray elucidations. Reduction takes place, when FeCl3 reacts with Tsi-Li (1:3 ratio) in toluene at 55-60 degreesC, yielding red-violet Fe(Tsi)(2), 1,1,1-tris(trimethylsilyl)-2-phenyl ethane and low amounts of Tsi-Cl. Fe(Tsi)(2) is monomeric, crystallizes in the monoclinic space group C2/c and consists of a linear C-Fe-C skeleton with d(Fe-C) of 204,5(4) pm. [References: 39]
机译:无碱的三(三甲基甲硅烷基)甲基锂Tsi-Li与土金属三卤化物(MHal(3)反应,M = Al,Ga,In和Hal = Cl,Br,I)主要生成金属化物[Tsi -MHal(3)]李。与这个简单的复分解同时发生,主要是Ga和In的卤化物和过量的Tsi-Li发生甲基化,形成单和二甲基化合物Tsi-M(Me)Hal(M = Ga,In; Hal = I), Tsi-MMe2(M = Ga)和双(三甲苯基)衍生物(Tsi)(2)InMe和主要副产物1,3-二硅环丁烷。通过分级结晶或升华分离了每种化合物的代表,并通过分光光度法(H-1,C-13,Si-29 NMR,IR,拉曼)和X射线阐明了特征。当FeCl3与Tsi-Li(1:3比例)在甲苯中于55-60℃反应时发生还原,生成红紫色Fe(Tsi)(2),1,1,1-三(三甲基甲硅烷基)-2-苯乙烷和少量的Tsi-Cl。 Fe(Tsi)(2)是单体,在单斜空间群C2 / c中结晶,由线性C-Fe-C骨架组成,d(Fe-C)为204,5(4)pm。 [参考:39]

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