Syntheses and Structures of Platinum Siloxides Bridged by a Sulfur or Selenium Atom and a Unique 1,3-Aryl Migration from Silicon to Platinum through the Si−O−Pt Linkages
Platinum siloxides bridged by a sulfur or selenium atom, [Tbt(Mes)Si(μ-O)(μ-E)Pt(PPh3)2] (1a: E = S, 1b: E = Se), were synthesized by utilizing hydroxysilanechalcogenols, Tbt(Mes)Si(OH)(EH) (2a: E = S, 2b: E = Se), which were kinetically stabilized by an effective combination of steric protection groups, 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl (Tbt) and mesityl (Mes), as key building blocks. Platinum
First Structural Characterization of Silanedithiol and Its Application toward the Synthesis of Silanedithiolato Complexes
作者:Taro Tanabe、Nobuhiro Takeda、Norihiro Tokitoh
DOI:10.1002/ejic.200601226
日期:2007.3
In this paper, we report the synthesis and the structuralcharacterization of stable examples of silanedithiol [Tbt(Mes)Si(SH)2 (1)], hydroxysilanethiol [Tbt(Mes)Si(OH)(SH) (3)], and hydroxysilaneselenol [Tbt(Mes)Si(OH)(SeH) (7)], which are kinetically stabilized by an effective combination of steric protection groups, Tbt (2,4,6-tris[bis(trimethylsilyl)methyl]phenyl) and Mes (2,4,6-trimethylphenyl)
在本文中,我们报告了硅烷二硫醇 [Tbt(Mes)Si(SH)2 (1)]、羟基硅烷硫醇 [Tbt(Mes)Si(OH)(SH) (3)] 的稳定实例的合成和结构表征,和羟基硅烷硒醇 [Tbt(Mes)Si(OH)(SeH) (7)],它们通过空间保护基团 Tbt(2,4,6-三[双(三甲基甲硅烷基)甲基]苯基)的有效组合在动力学上稳定和 Mes (2,4,6-三甲基苯基)。根据 X 射线结构分析和红外光谱判断,硅烷二硫属素醇 1、3 和 7 作为单体存在,没有任何分子间接触,如固态和溶液中的氢键。用2当量治疗1。丁基锂导致定量形成相应的硅烷二硫醇二锂,Tbt(Mes)Si(SLi)2 (8),其生成通过使用 MeI 的捕获实验得到证实。此外,将顺式-[MCl2(PPh3)2] (M = Pd, Pt) 添加到 8 的 THF 溶液中得到相应的硅烷二硫醇络合物,[Tbt(Mes)Si(μ-S)2M(PPh3)2]
Syntheses and structures of overcrowded silanedichalcogenols and their applications to the syntheses of silanedichalcogenolato complexes
state and in solution. Novel four-membered-ring compounds, such as Tbt(Mes)Si(μ-S)2PnBbt and [Tbt(Mes)Si(μ-E)(μ-E′)MLn] [E, E′ = O, S, Se; Pn = Sb, Bi; Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl; MLn = Pd(PPh3)2, Pt(PPh3)2, Ru(η6-benzene)] were synthesized by utilizing the silanedichalcogenols as key building blocks. The molecular structures of these newly isolated