𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis and multinuclear magnetic resonance investigation of some 1,3-selenazole and 1,3-selenazoline derivatives

✍ Scribed by Helmut Duddeck; Ralf Bradenahl; Lech Stefaniak; Jaroslaw Jazwinski; Bohdan Kamienski


Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
117 KB
Volume
39
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The ^1^H, ^13^C, ^15^N and ^77^Se NMR data of various annelated 1,3‐selenazoles and ‐1,3‐selenazolines are discussed in terms of tautomerism, configurational and conformational preference as well as HOMO–LUMO transition energies. The interpretations are corroborated by semi‐empirical calculations. Divergencies in solution‐ and solid‐state ^77^Se NMR data are discussed. Copyright © 2001 John Wiley & Sons, Ltd.


📜 SIMILAR VOLUMES


Multinuclear magnetic resonance study of
✍ Wojciech Bocian; Jaroslaw Jaźwiński; Lech Stefaniak; Graham A. Webb 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 293 KB

## Abstract ^1^H, ^13^C, ^14^N and ^15^N NMR data are reported for a series of mesoinoic 1,3,4‐triazoles and some of their salts. The results obtained show that the molecules studied exist in the cyclic mesoionic form with delocalization of the positive charge over the ring atoms. The corresponding

Multinuclear magnetic resonance study of
✍ Wojciech Bocian; Jaroslaw Jaźwiński; Wiktor Koźmiński; Lech Stefaniak; Graham A. 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 294 KB

## Abstract ^1^H, ^13^C, ^14^N and ^15^N NMR methods were applied to the study of some Type A mesoionic 1,3‐diphenyltetrazoles with various exocyclic groups. The ring structures of these tetrazoles are confirmed by the nitrogen NMR data. The shielding of N‐4 increases consecutively by amounts of __