Synthese und Kristallstrukturen von Cyclosilazanen mit ungewo¨hnlichen Konformationen
作者:Hans-Jo¨rg Rakebrandt、Uwe Klingebiel、Mathias Noltemeyer、Udo Wenzel、Dietrich Mootz
DOI:10.1016/s0022-328x(96)06393-0
日期:1996.11
The 1,3-disilazanes, (Me3C)2SiNH2NHSiFR2,R = Me (1), CHMe2 (2) and the 1,3,5-trisilazane, (Me3C)2Si(NHSiFMe2)2 (3), are formed in the reaction of lithiated diamino-di-tert-butylsilane with F2SiMe2 and F2Si(CHMe2)2.1 and2 react with BuLi to give the cyclodisilazanes4 and5, (Me3C)2Si(NH)2SiR2,R = Me (4), CHMe2 (5), and the cyclotetrasilazane6, [(Me3C)2SiNHSiMe2NH]2. In the reaction of fluorosilanes with
1,3-二硅氮烷(Me 3 C)2 SiNH 2 NHSiFR 2,R = Me(1),CHMe 2(2)和1,3,5-三硅氮烷(Me 3 C)2 Si(NHSiFMe 2)2(3)在锂化的二氨基二叔丁基硅烷与F 2 SiMe 2和F 2 Si(CHMe 2)2的反应中形成。1和2与BuLi反应生成环二硅氮烷如图4和5所示,(Me 3 C)2 Si(NH)2 SiR 2,R = Me(4),CHMe 2(5),和环四硅氮烷6,[(Me 3 C)2 SiNHSiMe 2 NH] 2。在氟硅烷与所述的锂衍生物反应4个5的silylsubstituted cyclodisilazanes 7,8,10和11,得到:7,(ME 3 C)2的sinh(NSiFMe 2)SiMe 2 ; 8,(Me 3 C)2 Si(NSiFMe 2)SiMe 2;10,(Me 3 C)2 SiNH(NSiF 2 CMe