Synthesis and Structure of Zwitterionic Silylborates and Silylzincates with Pendant Polydonor Arms

Autor:	Hui Li, Clemens Krempner, Fernando Hung-Low
Rok vydání:	2012
Předmět:	Inorganic Chemistry chemistry Silylation Potassium Yield (chemistry) Organic Chemistry chemistry.chemical_element Organic chemistry Zinc Physical and Theoretical Chemistry Boron Medicinal chemistry
Zdroj:	Organometallics. 31:7117-7124
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om300652n
Popis:	The synthesis and structure of well-defined zinc- and potassium-containing heterobimetallic zwitterions that have pendant polydonor arms is reported. The zwitterionic complexes [Me2ZnSi(SiMe2OCH2CH2OMe)3Li] (Li-2), [Cl2ZnSi(SiMe2OCH2CH2OMe)3K] (K-3), and [I2ZnSi(SiMe2OCH2CH2OMe)3K] (K-4) were prepared from reactions of [Si(SiMe2OCH2CH2OMe)3M] (M = Li, K) (M-1) with ZnCl2, ZnI2, and ZnMe2, respectively. Reaction of K-1 with B(C6F5)3 gave the potassium silyl borate [(C6F5)3BSi(SiMe2OCH2CH2OMe)3K] (K-5) in 90% yield. Treatment of 2 equiv of K-1 with ZnCl2 afforded the nonzwitterionic zinc silanide Zn(Si(SiMe2OCH2CH2OMe)3)2 (6), as a liquid, which upon treatment with 1 equiv of ZnMe2 and 4 equiv of B(C6F5)3 could be converted into the zwitterionic zinc silyl borate [(C6F5)3BSi(SiMe2OCH2CH2OMe)3Zn][MeB(C6F5)3] (7). The structures of the zwitterionic complexes K-4, K-5, and 7 were determined by X-ray crystallography.
Databáze:	OpenAIRE
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