ISSN:
0749-1581
Keywords:
Methylenebispyridinium derivatives
;
1H NMR
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The methylene proton chemical shifts of the system appear to be affected by the synergistic interactions of a combination of various effects. Although it is difficult to single out the origin, transmission and magnitude of these effects, the synergistic interactions pervade the molecule, causing a net displacement of the chemical shifts. The substituent-produced chemical shifts show a clear trend in their dependence on the nature of the substituents and the Hammett parameters. Strong through-conjugation between the aromatic nitrogen and resonance donor substituents in the para-position is observed.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260240902
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