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Multiple receiver experiments for NMR spectroscopy of organosilicon compounds

✍ Scribed by Ēriks Kupče; Bernd Wrackmeyer

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
133 KB
Volume
24
Category
Article
ISSN
0268-2605

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✦ Synopsis

Abstract

A new pulse sequence, 2D INEPT‐PANACEA, that allows parallel acquisition of 2D ^29^Si^29^Si INADEQUATE and 2D ^29^Si^1^H HMBC spectra and also provides the 1D ^29^Si NMR spectrum has been designed for use with organosilicon compounds and tested using a mixture of OH‐terminated polydimethylsiloxanes. The spectra provide ^29^SiO^29^Si connectivities and multiple bond ^29^Si^1^H correlation spectra in a single measurement that can be recorded in as little time as 8 min. In addition, the 1D ^29^Si NMR spectrum provides accurate measurement of ^29^Si chemical shifts with a signal‐to‐noise ratio allowing for determination of ^29^Si^13^C spin–spin coupling constants, and also serves as a frequency lock. The latter feature allows for recording of NMR spectra of neat liquid samples or of samples without a deuterated solvent. The second example of using multiple receivers involves PANSY‐COSY and PANSY‐TOCSY experiments, using silatrane glycol as a test sample. Copyright © 2010 John Wiley & Sons, Ltd.

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