AROMATICITY IN SILOLE DIANIONS - STRUCTURAL, ENERGETIC, AND MAGNETIC ASPECTS

Authors
GOLDFUSS B SCHLEYER PV HAMPEL F
Citation
B. Goldfuss et al., AROMATICITY IN SILOLE DIANIONS - STRUCTURAL, ENERGETIC, AND MAGNETIC ASPECTS, Organometallics, 15(7), 1996, pp. 1755-1757
Citations number
33
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
15
Issue
7
Year of publication
1996
Pages
1755 - 1757
Database
ISI
SICI code
0276-7333(1996)15:7<1755:AISD-S>2.0.ZU;2-D
Abstract
Structural, energetic, and magnetic criteria confirm that the silole d ianion (CHSi2- (7) and its alkali-metal ion pairs, e.g. (CH)(4)SiLi- ( 7a), (CH)(4)SiLi2 (7b), (CH)(4)SiNa2 (13), and (CH)(4)SiK2 (14), are h ighly aromatic. Inverse sandwich structures and strongly delocalized s ilole rings are prefered by 7b, 13, and 14. The degree of aromaticity in. [eta(5)-(CH)(4)Si]Li- (7a) exceeds that of the isoelectronic third -period heterocycles (CH)(4)-PLi (5a) and (CH)(4)SLi+ (6a) and even ap proaches that of (CH)(5)Li (3a).