𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chiral recognition of Schiff bases by 15N NMR spectroscopy in the presence of a dirhodium complex. Deuterium isotope effect on 15N chemical shift of the optically active Schiff bases and their dirhodium tetracarboxylate adducts

✍ Scribed by Z. Rozwadowski; B. Nowak-Wydra

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
146 KB
Volume
46
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Optically active Schiff bases, derivatives of ortho‐hydroxyaldehydes and their adducts with dirhodium tetracarboxylate complexes have been studied by ^15^N NMR spectroscopy. The position of the equilibrium of Schiff bases, as well as their adducts, has been established on the basis of measurements of deuterium isotope effects on ^15^N chemical shifts. At the equilibrium state, the formation of the adducts with dirhodium complexes shifted the proton‐transfer equilibrium towards the NH‐form. Copyright © 2008 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Chiral recognition of the Schiff bases b
Chiral recognition of the Schiff bases by NMR spectroscopy in the presence of a chiral dirhodium complex. Deuterium isotope effect on 13C chemical shift of the optically active Schiff bases and their dirhodium adducts
✍ Z. Rozwadowski 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 148 KB

## Abstract The dirhodium method has been successfully applied in chiral recognition of the optically active Schiff bases, derivatives of __ortho__‐hydroxyaldehydes existing in the NH‐form. or at tautomeric equilibrium. The position of the equilibrium of Schiff bases as well as their adducts has be

Deuterium isotope effects on 15N chemica
Deuterium isotope effects on 15N chemical shifts of double Schiff bases in the solid state and solution
✍ T. Dziembowska; K. Ambroziak; Z. Rozwadowski; W. Schilf; B. Kamieński 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 95 KB

## Abstract The proton transfer equilibrium in a series of double Schiff base derivatives of __trans__‐1,2‐diaminocyclohexane in solution and the solid state was studied by means of ^15^N NMR spectroscopy and analysis of the deuterium isotope effect on the chemical shifts Δ^15^N(D). The presence of

Solid-state NMR study of Schiff base der
Solid-state NMR study of Schiff base derivatives of 2-hydroxynaphthaldehyde. Deuterium isotope effects on 15N chemical shifts in the solid state
✍ Z. Rozwadowski; W. Schilf; B. Kamieński 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 111 KB

## Abstract Schiff base derivatives of 2‐hydroxynaphthylaldehyde were studied by means of ^13^C and ^15^N cross‐polarization magic angle spinning NMR spectroscopy and deuterium isotope effects on ^15^N chemical shifts, ΔN(D), in the solid state. ΔN(D) in the solid state provided evidenced for the p