High resolution NMR spectroscopy of heteroaromatic cations. I.  13 C 1 H coupling constants in the pyridinium cation | Zendy

Sándor P. | Zendy; Radics L. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

High resolution NMR spectroscopy of heteroaromatic cations. I. 13 C 1 H coupling constants in the pyridinium cation

Author(s) -

Sándor P.,

Radics L.

Publication year - 1980

Publication title -

organic magnetic resonance

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0030-4921

DOI - 10.1002/mrc.1270140205

Subject(s) - pyridinium , chemistry , pyridine , electronegativity , coupling constant , spectral line , proton , substituent , chemical shift , nmr spectra database , spectroscopy , resonance (particle physics) , tetrafluoroborate , analytical chemistry (journal) , stereochemistry , medicinal chemistry , ionic liquid , atomic physics , organic chemistry , physics , particle physics , quantum mechanics , astronomy , catalysis

High‐resolution 1 H{ 14 N} and proton‐coupled natural‐abundance 13 C{ 14 N} double resonance spectra have been recorded for pyridinium tetrafluoroborate dissolved in CD 3 CN. Iterative analysis of these spectra has provided the accurate values and relative signs of all possible long‐range 13 C— 1 H coupling constants. These are compared with the respective values in pyridine and pyridine‐ N ‐oxide and discussed in terms of the relationship with the electronegativity of the N ‐substituent. Experimental conditions allowing the observation of well‐resolved proton‐coupled 13 C NMR spectra of charged heteroaromatics are also presented.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research