✦ LIBER ✦

1H NMR spectra of a series of disperse azo dyes

✍ Scribed by L. A. Fedorov; P. Savarino; V. I. Dostovalova; G. Viscardi; R. Carpignano; E. Barni

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 134 KB
Volume: 29
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260290721

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The ^1^H NMR spectra of a series of disperse monoazo dyes in solution are reported and analysed in terms of electronic effects of the substituents, rotational isomerism and hydrogen bonding.

📜 SIMILAR VOLUMES

Synthesis of some novel bis(hetaryl)azo

Synthesis of some novel bis(hetaryl)azo disperse dyes and investigation of their absorption spectra

✍ Zeynel Seferoǧlu; Nermin Ertan 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 388 KB

## Abstract 3‐Amino‐2‐cyano‐4,6‐disubstituted‐thieno{2,3‐b}pyridines and 3‐aminopyridine were diazotized and coupled with 2‐phenylindole, 2‐methylindole, and 1‐methyl‐2‐phenylindole, respectively. These dyes were characterized by UV‐Visible, FT‐IR, ^1^H NMR, and mass spectroscopic techniques. Solve

15N, 13C and 1H NMR spectra of the 2:1 c

15N, 13C and 1H NMR spectra of the 2:1 cobalt(III) complexes of some azo dyes

✍ Antonín Lyčka; Josef Jirman; Aleš Cee 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 459 KB

## Abstract The ^15^N, ^13^C and ^1^H NMR spectra of 2:1 cobalt(III) complexes of azo dyes and their ^15^N isotopomers, derived from substituted 2‐hydroxyaniline azo coupling products with acetoacetanilide, were measured. It was found that, in contrast to precursors existing fully in their hydrazon

13C NMR spectra of non-labelled and 15N-

13C NMR spectra of non-labelled and 15N-mono-labelled azo dyes

✍ Antonín Lyčka; Dobroslav Šnobl; Vladimír Macháček; Miroslav Večeřa 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 408 KB

## Abstract ^13^C NMR spectra of four types of azo coupling products from benzenediazonium chloride have been measured and interpreted, viz. hydrazo compounds with an intramolecular hydrogen bond (3‐methyl‐1‐phenylpyrazole‐4,5‐dione 4‐phenylhydrazone), azo compounds without an intramolecular hydrog

27Al, 15N, 13C and 1H NMR spectra of the

27Al, 15N, 13C and 1H NMR spectra of the 2:1 aluminium(III) complexes of some azo dyes

✍ Antonín Lyčka; Paul Rys; Peter Skrabal 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 235 KB 👁 1 views

The 27Al, 15N, 13C and 1H NMR spectra in DMSO and 27Al and 15N magic angle spinning NMR spectra of 2 : 1 aluminium(III) complexes derived from 5-chloro-2-hydroxyaniline azo coupling products with acetoacetanilide, 3-methyl-1-phenylpyrazol-5-one and 2-naphthol were measured and analysed. It was found

1H NMR spectra of pyranocoumarins

✍ Paolo Manzini; Paolo Rodighiero; Giovanni Pastorini; Adriano Guiotto 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 164 KB

The 'H NMR spectra of variously annulated pyranocoumarins are reported. The complete assignment of chemical shifts was achieved by using coupling constants and the shift effects induced by the introduction of methyl groups at various positions on the pyranocoumarin nucleus, and by comparison with th

1H NMR spectra of nitrated aminopyridine

1H NMR spectra of nitrated aminopyridines

✍ Helmut Ritter; M. Kaiser 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 205 KB

## Abstract The ^1^H NMR spectra of 26 nitrated aminopyridines were measured and interpreted. Chemical shift assignments were based on existing chemical shift rules for substituted pyridines and spectral comparison with compounds of similar structure. Some __o__‐aminonitropyridines were found to gi