THE SILOLYL ANION C4H4SIH- IS AROMATIC AND THE LITHIUM SILOLIDE C4H4SIHLI EVEN MORE SO

被引：73

作者：

GOLDFUSS, B ^{[1
]}

SCHLEYER, PV ^{[1
]}

机构：

[1] UNIV ERLANGEN NURNBERG, INST ORGAN CHEM, D-91054 ERLANGEN, GERMANY

来源：

ORGANOMETALLICS | 1995年 / 14卷 / 04期

关键词：

D O I：

10.1021/om00004a004

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The eta(5) coordination of Li+ in lithium silolide Li+(CH)(4)SiH- (4), increases the delocalization and aromaticity relative to C4H4SiH- (1a) strongly: 4 exhibits 80% of the stabilization energy of Li+C5H5-, decreased pyramidality of the silicon center, and increased CC bond length equalization. In addition, delta(Si-29) in 4 is shifted downfield, delta(C-13) is shifted upfield, and the diamagnetic susceptibility is exalted (A). Likewise, experimental X-ray data on. {Cp*Ru(H)[eta(5)-Me(4)C(4)SiSi(SiMe(3))(3)]}[BPh(4)] (2) and NMR studies on lithium 1-tertbutyl-2,3,4,5-tetraphenylsilolide (3) suggest delocalized silole rings.

引用

页码：1553 / 1555

页数：3

共 33 条

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