Nematic-phase nuclear magnetic resonance investigation of rotational isomerism. Part 7. An investigation into the structure of 2,2′-bipyridyl using the proton and deuterium spectra of liquid crystalline solutions
- 1 January 1979
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 6,p. 853-856
- https://doi.org/10.1039/p29790000853
Abstract
A 220 MHz proton n.m.r. spectrum of 2,2′-bipyridyl in a nematic phase solution has been analysed to yield a set of dipolar coupling constants, Dij. The couplings Dij are not in complete agreement with a description of the molecule as a single conformation. The trans-form alone occurs in solid, 2,2′-bipyridyl, but although this is probably the predominant form in the liquid state, there does appear to be a difference between the molecular structure in the two phases.Keywords
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