𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Influence of lone-pair electrons on the sign of 2J(13C-15N). Signs of the 13C-15N coupling constants in 15N-pyridine and its derivatives

✍ Scribed by T. Bundgaard; H.J. Jakobsen

Publisher
Elsevier Science
Year
1976
Tongue
French
Weight
267 KB
Volume
17
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Selective population transfer in 15N and
Selective population transfer in 15N and 13C NMR: Signs of 15NH and 15N13C coupling constants in secondary amide and iminium salts
✍ H. Martineau; M. Trierweiler; M. L. Martin 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 389 KB

## Abstract The selective population transfer method has been applied to the study of a secondary amide and of the corresponding iminium salt. Important signal‐to‐noise enhancements were accessible in both fully coupled and proton decoupled ^15^N and ^13^C spectra. Moreover, the resolving power of

13C NMR: The stereochemical dependence o
13C NMR: The stereochemical dependence of 15N13C coupling constants in pyrazoles
✍ T. Axenrod; P. Mangiaracina; C. M. Watnick; M. J. Wieder; S. Bulusu 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 227 KB

## Abstract Geminal ^15^N^13^C coupling constants have been measured in a series of ^15^N‐enriched 1‒phenyl‒3,5‒dialkyl‐substituted pyrazoles. The importance of the orientation of the nitrogen lone‐pair in determining the magnitude of ^2^__J__(^15^N^13^C) values is reflected in the enhanced coupli

Influence of the Z/E configuration on th
Influence of the Z/E configuration on the 13C15N coupling conditions 1J(13C15N) in aromatic azo and diazo compounds
✍ S. Simova; E. Fanghänel; R. Radeglia 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 English ⚖ 417 KB

## Abstract The ^13^C NMR spectra of singly ^15^N‐labelled __Z__/__E__ isomers of azo and diazo compounds were recorded. The ^1^__J__(^13^C^15^N) coupling constants are strongly dependent on the geometrical configuration of the azo group, the relative position of the lone pair of electrons at the n

15N NMR spectroscopy 28—solvent effects
15N NMR spectroscopy 28—solvent effects on the 15N13C coupling constants of amides, imides, ureas and polypeptides
✍ Hans R. Kricheldorf 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 671 KB

## Abstract The ^15^N^13^C coupling constants of ^15^N‐enriched acetamide, __N__‐acetylglycine anilide, phthalimide, α,α′‐bisphthalimido‐__p__‐xylene, __N__‐methyl‐__N__′‐phenylurea, poly‐L‐alanine and poly‐L‐valine were measured in various solvents. It was found that the ^15^N^13^C coupling cons