Aromaticity in Silole Dianions: Structural, Energetic, and Magnetic Aspects
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- 作者：Bernd Goldfuss ; Paul von Ragué ; Schleyer ; and Frank Hampel
- 刊名：Organometallics
- 出版年：1996
- 出版时间：April 2, 1996
- 年：1996
- 卷：15
- 期：7
- 页码：1755 - 1757
- 全文大小：249K
- 年卷期：v.15,no.7(April 2, 1996)
- ISSN：1520-6041
文摘
Structural, energetic, and magnetic criteriaconfirm that the silole dianion (CH)4Si2-(7) and itsalkali-metal ion pairs, e.g. (CH)4SiLi-(7a), (CH)4SiLi2(7b), (CH)4SiNa2(13), and (CH)4SiK2(14), are highlyaromatic. Inverse sandwich structures and stronglydelocalized silole rings are prefered by 7b, 13,and 14.The degree of aromaticity in[
5-(CH)4Si]Li-(7a) exceedsthat of the isoelectronic third-period heterocycles(CH)4PLi (5a) and (CH)4SLi+(6a) and even approaches thatof (CH)5Li (3a).
5-(CH)4Si]Li-(7a) exceedsthat of the isoelectronic third-period heterocycles(CH)4PLi (5a) and (CH)4SLi+(6a) and even approaches thatof (CH)5Li (3a).