Old and new experiments for obtaining quaternary-carbon-only NMR spectra

Furrer, Julien (2020). Old and new experiments for obtaining quaternary-carbon-only NMR spectra. Applied spectroscopy reviews, 56(2), pp. 128-142. Taylor & Francis 10.1080/05704928.2020.1756838

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In this review, several Nuclear Magnetic Resonance (NMR) pulse sequences aimed at obtaining quaternary-carbon-only (Cq only) 13C spectra were evaluated both theoretically and experimentally. A new experiment, the Improved Quaternary Carbon Detection (iQCD) that improves the performances of the state-of-the-art Subsequent Editing using a Multiple Quantum Trap-90 (SEMUT-90) pulse sequence is also proposed and described. Compared to the latter, the iQCD sequence permits using shorter tip angles for the first carbon pulse to allow for a faster repetition rate and better sensitivity. With concentrated sample and by taking advantage of the high sensitivity of cryogenically cooled probeheads, artifacts-free quaternary-carbon-only spectra can be obtained with very few scans. These attributes make the iQCD NMR experiment attractive for 13C analysis of mixtures of medium-sized molecules and quaternary carbon-rich synthetic products.

Item Type:

Journal Article (Review Article)

Division/Institute:

08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Furrer, Julien

Subjects:

500 Science > 540 Chemistry

ISSN:

0570-4928

Publisher:

Taylor & Francis

Language:

English

Submitter:

Julien Henri Lucien Furrer

Date Deposited:

17 Jul 2020 15:40

Last Modified:

01 May 2021 02:30

Publisher DOI:

10.1080/05704928.2020.1756838

BORIS DOI:

10.7892/boris.145251

URI:

https://boris.unibe.ch/id/eprint/145251

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