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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Aminolysis of the Si-Cl bond and ligand exchange reaction between silicon amido derivatives and SiCl_4:synthetic applications and kinetic investigations
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Aminolysis of the Si-Cl bond and ligand exchange reaction between silicon amido derivatives and SiCl_4:synthetic applications and kinetic investigations

机译：硅酰胺衍生物与SiCl_4之间Si-Cl键的氨解和配体交换反应：合成应用及动力学研究

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The aminolysis of the Si-Cl bond in SiCln(NR_2)_(4-n) (n = 1,2,3,4) has been employed for the synthesis of binary amido,chloro-amido or mixed amido derivatives,depending on the nature of the silicon derivative and of the amine.The kinetics of the reaction have been investigated in some representative cases,i.e.SiCl_4 + NH'Pr_2,SiCl(NMe_2)_3 + NH_2'Pr,SiO_2(NEt_2)_2 + NH_2'Pr,showing that the rate law is first-order with respect to the silicon compound and does not depend on the concentration of the amine.Moreover,the activation parameters of the reaction of SiO_2(NEt_2)_2 with NH_2;Pr have been determined.The ligand exchange reaction between SiCl_4 and SiCl,(NR_2)_(4-n) yields a number of chloro-amido derivatives,whose composition is strictly determined by the molar ratio of the reactants.The kinetics of the reaction between SiCL,and SiCl,(NR_2)_(4-n) were investigated for n=3,R=Me,and n=2,R=Et.Moreover in the latter case the equilibrium and activation parameters have been determined.
机译：SiCln（NR_2）_（4-n）（n = 1,2,3,4）中Si-Cl键的氨解反应已用于合成二元酰胺，氯酰胺或混合酰胺衍生物，具体取决于在一些代表性的情况下研究了反应动力学，即SiCl_4 + NH'Pr_2，SiCl（NMe_2）_3 + NH_2'Pr，SiO_2（NEt_2）_2 + NH_2'Pr ，表明速率定律相对于硅化合物是一阶的，并且不依赖于胺的浓度。此外，确定了SiO_2（NEt_2）_2与NH_2; Pr反应的活化参数。 SiCl_4与SiCl之间的配体交换反应（NR_2）_（4-n）产生许多氯代酰胺基衍生物，其组成严格取决于反应物的摩尔比.SiCl和SiCl之间的反应动力学研究了（NR_2）_（4-n）的n = 3，R = Me，n = 2，R = Et。此外，在后一种情况下，确定了平衡和活化参数。

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