ISSN:
0749-1581
Keywords:
15N,1H spin coupling
;
15N chemical shifts
;
Lone-pair effects
;
Hydrogen bonding
;
Solvent effects
;
Pyridines
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The two-bond 15N,H coupling constant in 3,5-dimethylpyridine was determined in 30 solvents and shown to vary between -11 and -3 Hz. An increasing ability of the solvent to form hydrogen bonds causes a steady decrease in ∣ 2J(15N,H)∣, which is also observed with some selected pyridine derivatives with intramolecular hydrogen bonds. A linear correlation is found between the positive lone-pair effect on ∣2J(15N,H)∣ and the decrease in nitrogen shielding.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260270602
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