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A Three-Dimensional DOSY–HMQC Experiment for the High-Resolution Analysis of Complex Mixtures

✍ Scribed by Hervé Barjat; Gareth A. Morris; Alistair G. Swanson

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
124 KB
Volume
131
Category
Article
ISSN
1090-7807

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✦ Synopsis

A three-dimensional experiment is described in which NMR diffusion coefficient is constructed from the NMR and diffusignals are separated according to their proton chemical shift, 13 C sion data, it shows relatively poor resolution in both dochemical shift, and diffusion coefficient. The sequence is built up mains. In this regime, therefore, DOSY is most suitable for from a stimulated echo sequence with bipolar field gradient pulses the low-resolution analysis of mixtures containing species and a conventional decoupled HMQC sequence. Results are preof very different sizes (4).

sented for a model mixture of quinine, camphene, and geraniol in

In the second regime, by contrast, the ability to obtain deuteriomethanol.

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