Journal of the American Chemical Society

The conformation of biphenyls in nematic liquid crystalline solution. The relationship between the torsional angles and the size of the halogens in 2, 6-dihalogenated …

LD Field, S Sternhell

Index: Field, Leslie D.; Sternhell, Sever Journal of the American Chemical Society, 1981 , vol. 103, # 4 p. 738 - 741

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Citation Number: 30

Abstract

Abstract: Analysis of the NMR spectrum of 4'-bromo-4-chloro-2, 6-difluorobiphenyl in a nematic liquid crystalline solvent, together with the previously reported'work of Field, Sternhell, and Tracey shows that the ground-state torsional angles in this series are a smooth monotonic function of the size of the halogens at C-2 and (2-6. There are indications that through-conjugation plays a very minor role in determining the torsional angles and ...