𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A study of 15N-15N and 15N-13C spin couplings in some 15N labeled mesoionic 1-oxa and 1-thia-2,3,4-triazoles

✍ Scribed by J. Jaźwiński; O. Staszewska; L. Stefaniak; G.A. Webb


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
264 KB
Volume
377
Category
Article
ISSN
0022-2860

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Spin–spin couplings in doubly 15N labell
✍ P. Stilbs; S. Forsén 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 209 KB

## Abstract The ^1^H n.m.r. spectra of doubly ^15^N labelled urea and 1,3‐dimethylurea have been analysed with the aid of computer simulation. ^1^H^1^H, ^1^H^15^N, ^15^N^15^N and ^13^C^15^N (from ^13^C Ft spectra) couplings are reported.

1H, 13C and 15N NMR study of N1-alkyl-N2
✍ Iwona Wawer; Vera Koleva 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 407 KB

## Abstract ^13^C and ^15^N NMR chemical shifts were measured for __N__^1^‐alkyl‐__N__^2^‐arylthioureas. The absence of decoalescence of the __N__^1^‐alkyl group carbon signals down to 190 K, the europium‐induced chemical shifts and the molecular mechanics calculations indicate that the preferred c

NMR studies in the heterocyclic series X
✍ Alain Fruchier; Valdo Pellegrin; Rémy Schimpf; José Elguero 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 352 KB

## Abstract The ^15^N chemical shifts and ^1^H^15^N and ^13^C^15^N coupling constants of nine monolabelled indazoles were measured and assigned. The experimental values are discussed in terms of the indazolic and iso‐indazolic structures, and compared with literature data for other related hetero

Synthesis of tetrazole-13C and 1,2,4-tri
✍ Roger S. Rowlett; Thomas Klysa; William W. Shiraki 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 French ⚖ 141 KB

## Abstract We report here the syntheses of tetrazole‐^13^C and 1,2,4‐triazole‐1,2‐^15^N~2~ by simple, one‐step procedures using common, commercially available, isotopically‐labeled starting materials. tetrazole‐ ^13^C is conveniently prepared from K^13^CN and NaN~3~ in 70% yield, almost twice the

13C and 15N NMR study of substituted 1,2
✍ Erkki Kolehmainen; David Šaman; Alois Pískala; Milena Masojídková 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 315 KB

## Abstract ^13^C and ^15^N NMR spectra of eight substituted 1,2,4‐triazines were measured and assigned. The assignments of the ^13^C NMR spectra were based on the substituent chemical shifts and ^__n__^__J__(C,H) coupling constants. ^15^N NMR chemical shifts generally showing well separated ranges

1H, 13C, and 15N NMR analysis of Tröger'
✍ Francisca Salort; Carmen Pardo; José Elguero 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 103 KB

## Abstract One‐ and two‐dimensional NMR spectra of Tröger's base, (±)‐2,8‐dimethyl‐6__H__,12__H__‐5,11‐methanodibenzo[__b,f__][1,5]diazocine labelled on one of the nitrogen atoms, have been used to determine the chemical shifts, coupling constants, and Δ^13^C(^15^N) isotope shifts. Copyright © 200