
TY  - JOUR
A1  - Fong, CW 
T1  - Torsional angles and substituent effects in phenyl-substituted azoles by carbon-13 N.M.R. chemical shifts
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1980
VL  - 33
IS  - 8
SP  - 1763
EP  - 1770
KW  - 
UR  - https://doi.org/10.1071/CH9801763 
N2  - The torsional angles in 31 N-phenyl-substituted azole derivatives have been estimated by use of the 13C substituent chemical shifts of the meta and para carbon atoms. Steric interaction between the C 5 substituent on the azole rings and the ortho hydrogen atoms of the benzene ring is the major cause of non-planarity in these compounds. The azole rings undergo structural deformation with varying substituents on the azole ring. The inductive effect of a number of azole and azolium rings is discussed. 
ER  -

