pi-pi and sigma-pi interactions in alpha,omega-dinaphthyl and -dianthryl oligosilanes in solution

Authors
Karatsu, T Shibata, T Nishigaki, A Fukui, K Kitamura, A
Citation
T. Karatsu et al., pi-pi and sigma-pi interactions in alpha,omega-dinaphthyl and -dianthryl oligosilanes in solution, CHEM LETT, (10), 2001, pp. 994-995
Citations number
12
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY LETTERS
ISSN journal
03667022 → ACNP
Issue
10
Year of publication
2001
Pages
994 - 995
Database
ISI
SICI code
0366-7022(20011005):10<994:PASIIA>2.0.ZU;2-2
Abstract
The pi-pi and sigma-pi interactions in alpha,omega -di-1-naphthyl and di-9- anthryl oligosilanes [Np-(SiMe2)(n)-Np (1-4), Ant-(SiMe2)(n)-Ant (5-8), n = 1-4] were investigated in solution. In nonpolar solvents such as cyclohexa ne, a strong excimer fluorescence is observed, which indicates a strong pi- pi interaction. In a polar solvent (CH3CN), a charge-transfer (CT) emission is observed for 3 and 4 due to the sigma-pi interaction.