4 years ago

Bulky Phenyl Modifications of the Silanide Ligand Si(SiMe3)3 – Synthesis and Reactivity

Bulky Phenyl Modifications of the Silanide Ligand Si(SiMe3)3 – Synthesis and Reactivity
Andreas Schnepf, Claudio Schrenk, Sascha Fietze, Patrick Schmidt
The synthesis and structural characterization of bulkier variations of the very common organometallic compound MSi(SiMe3)3, namely MSi(SiMe3)(SiPh3)2 3 and MSi(SiPh3)3 [M = Li (1), K (5)] are presented, which can be synthesized via a step by step exchange of SiMe3 groups by bulkier SiPh3 groups. This synthetic route is high selective and is performed in good yields via the silanes Si(SiMe3)2(SiPh3)2 (2) and Si(SiMe3)(SiPh3)3 (4). Additionally, the corresponding silanes HSi(SiMe3)(SiPh3)2 (6H) and HSi(SiPh3)3 (7H) are obtained via the reaction of 3 and 5 with aqueous HCl, respectively. Oxidation of 6H with CCl4 gives the chlorsilane Cl-Si(SiMe3)(SiPh3)2 (6Cl). The bulkiest chlorsilane Cl–Si(SiPh3)3 (7) is obtained by the reaction of 5 with ECl2 (E = Sn, Pb).

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/zaac.201700253

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