K. Orrell, V. Šik
Sep 16, 1975
Citations
0
Influential Citations
4
Citations
Journal
Journal of the Chemical Society, Faraday Transactions
Abstract
The n.m.r. spectra of 2,6-difluoropyridine, 2,6-dichloropyridine and 3,5-dichloropyridine oriented in a nematic phase have been analysed and the average orientations of these molecules discussed and compared with other pyridines. The geometry of 2,6-difluoropyridine has been derived and indicates ring distortion in the vicinity of the fluorine substituents. Absolute signs of the major indirect coupling constants have been deduced.