CONFORMATIONAL-ANALYSIS OF 3,3'-DIMETHOXY-2,2'-BITHIOPHENE, 3,4'-DIMETHOXY-2,2'-BITHIOPHENE AND 4,4'-DIMETHOXY-2,2'-BITHIOPHENE AS MODELS FOR RELATED POLYMERS

Authors
BONGINI A BRIONI F PANUNZIO M
Citation
A. Bongini et al., CONFORMATIONAL-ANALYSIS OF 3,3'-DIMETHOXY-2,2'-BITHIOPHENE, 3,4'-DIMETHOXY-2,2'-BITHIOPHENE AND 4,4'-DIMETHOXY-2,2'-BITHIOPHENE AS MODELS FOR RELATED POLYMERS, Perkin transactions. 2, (5), 1997, pp. 927-929
Citations number
35
Categorie Soggetti
Chemistry Physical","Chemistry Inorganic & Nuclear
Journal title
Perkin transactions. 2 → ACNP
ISSN journal
03009580
Issue
5
Year of publication
1997
Pages
927 - 929
Database
ISI
SICI code
0300-9580(1997):5<927:CO33>2.0.ZU;2-4
Abstract
An analysis of C-13 chemical shifts of quaternary carbons of 3,3'- 3,4 '- and 4,4'-dimethoxy-2,2'-bithiophenes indicates they can be a useful tool for the identification of the inter-ring junction type, UV spect ra and theoretical calculations are used to perform a conformational a nalysis of the compounds, The results show that the compounds prefer a non-planar conformation in non-condensated phases. The reasons for th is non-planarity of the dimers and the effect on related polymers are discussed.