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High resolution 1H NMR spectra of 2,2′-biquinoline

✍ Scribed by J. A. G. Drake; D. W. Jones

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 199 KB
Volume: 18
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270180110

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✦ Synopsis

Abstract

From analysis and refinement by the LAOCOON III program of the 220 MHz ^1^H spectrum of 2,2′‐biquinoline, recorded as a saturated solution in carbon disulphide, most derived chemical shifts and coupling constants are close to corresponding values in quinoline. However, H‐3 is at 1.5 ppm lower field in 2,2′‐biquinoline than in quinoline and the ortho‐coupling ^3^J(34) in the heterocyclic ring is 0.5 Hz larger in 2,2′‐biquinoline than in quinoline; fairly free rotation about the 2,2′ bond is inferred.

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