Pentacoordinate Silicon Compounds with SiO5 Skeletons Containing SiOH or SiOSi Groups: Derivatives of the Pentahydroxosilicate(1-) Anion [Si(OH)5]- and Its Anhy
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- 作者：Reinhold Tacke ; Christian Burschka ; Ingo Richter ; Brigitte Wagner ; and Reiner Willeke
- 刊名：Journal of the American Chemical Society
- 出版年：2000
- 出版时间：September 6, 2000
- 年：2000
- 卷：122
- 期：35
- 页码：8480 - 8485
- 全文大小：130K
- 年卷期：v.122,no.35(September 6, 2000)
- ISSN：1520-5126
文摘
Three novel pentacoordinate silicon compounds with SiO5 skeletons containing SiOH or SiOSi groupswere synthesized: triethylammonium bis[benzilato(2-)-O1,O2]hydroxosilicate (1; isolated as rac-1), aniliniumbis[benzilato(2-)-O1,O2]hydroxosilicate [2; isolated as a conglomerate consisting of (
)-2·THF and (
)-2·THF], and anilinium tetrakis[benzilato(2-)-O1,O2]-
-oxo-disilicate (3; isolated as rac-3·2CH3CN). The 
5Si-hydroxosilicate and 5Si,5Si'--oxo-disilicate anions of these salts formally derive from the pentahydroxosilicate(1-) anion [Si(OH)5]- and its anhydride [(HO)4Si-O-Si(OH)4]2-, respectively. All compounds werecharacterized in solution (1H, 13C, and 29Si NMR) and in the solid state (29Si VACP/MAS NMR, crystal structureanalyses).
)-2·THF and ()-2·THF], and anilinium tetrakis[benzilato(2-)-O1,O2]--oxo-disilicate (3; isolated as rac-3·2CH3CN). The 5Si-hydroxosilicate and 5Si,5Si'--oxo-disilicate anions of these salts formally derive from the pentahydroxosilicate(1-) anion [Si(OH)5]- and its anhydride [(HO)4Si-O-Si(OH)4]2-, respectively. All compounds werecharacterized in solution (1H, 13C, and 29Si NMR) and in the solid state (29Si VACP/MAS NMR, crystal structureanalyses).