Synthesis and Coordination of the Cagelike Siloxane Compounds E
<sub>2</sub>
{(SiMe
<sub>2</sub>
)
<sub>2</sub>
O}
<sub>3</sub>
(E = As, Sb, Bi)
作者:Christian Bimbös、Maximilian Jost、Carsten von Hänisch、Klaus Harms
DOI:10.1002/ejic.201300479
日期:2013.9.3
similar compounds. The small Si–E–Si angles in these compounds are attributable to steric and electronic reasons. Further, the R3M–E[(SiMe2)2O]3E–MR3 (M = Al, E = As, Sb; M = Ga, E = Sb) Lewis acid–base adducts were formed as well as the W(CO)5 adduct of compound 1 and a heteroleptic Na[Al(ORF)4] (RF = C(CF3)3) adduct with 4 to investigate the coordination properties of the cage compounds. The structural
E = P、As、Sb 和 Bi(分别为 1、4、5 和 6)的笼状化合物 [E2(SiMe2)2O}3] 很容易通过 Na3E(对于 E = P、As、Sb、Bi) 或 [Li(dme)EH2](对于 E = P,As;dme = 二甲氧基乙烷)与 1,3-二氯-1,1,3,3-四甲基二硅氧烷。这些化合物被分离出来并通过 X 射线晶体学分析表征。讨论了主要结构参数,如 E-Si 键长和 Si-E-Si 角,并与类似化合物的结构参数进行了比较。这些化合物中小的 Si-E-Si 角归因于空间和电子原因。此外,R3M–E[(SiMe2)2O]3E–MR3 (M = Al, E = As, Sb; M = Ga, E = Sb) 形成路易斯酸碱加合物以及化合物 1 的 W(CO)5 加合物和杂配 Na[Al(ORF)4] (RF = C(CF3)3) 加合物与 4 以研究笼化合物的配位特性。由配位引起的结构变化遵循