SYNTHESIS AND CHARACTERIZATION OF 2 AROMATIC SILICON-CONTAINING DIANIONS - THE 2,3,4,5-TETRAPHENYLSILOLE DIANION AND THE ,1'-DISILA-2,2',3,3',4,4',5,5'-OCTAPHENYLFULVALENE DIANION

Citation
Jh. Hong et al., SYNTHESIS AND CHARACTERIZATION OF 2 AROMATIC SILICON-CONTAINING DIANIONS - THE 2,3,4,5-TETRAPHENYLSILOLE DIANION AND THE ,1'-DISILA-2,2',3,3',4,4',5,5'-OCTAPHENYLFULVALENE DIANION, Organometallics, 13(9), 1994, pp. 3387-3389
Citations number
27
Language
INGLESE
art.tipo
Note
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
ISSN journal
0276-7333
Volume
13
Issue
9
Year of publication
1994
Pages
3387 - 3389
Database
ISI
SICI code
0276-7333(1994)13:9<3387:SACO2A>2.0.ZU;2-5
Abstract
Sonication of 1,1-dichloro-TPSCp (TPSCp = 2,3,4,5-tetraphenyl-1-silacy clopentadiene) with lithium in a 1:3 ratio in THF gives the ,1'-disila -2,2',3,3',4,4',5,5'-octaphenylfulvalene dianion {[TPSCp(-)](2).2[Li+] } as the major product. Further sonication of [TPSCp(-)](2).2[Li+] in the presence of lithium gives the 2,3,4,5-tetraphenylsilole dianion {[ TPSCp(2-)].2[Li+]} exclusively. NMR studies (H-1, C-13, Si-29) of thes e anions show significant delocalization of the negative charges to th e silole rings.