Comparison of  1 H– 19 F two‐dimensional NMR scalar coupling correlation pulse sequences | Zendy

Marchione Alexander A. | Zendy; Dooley Rebecca J. | Zendy; Conklin Breanna | Zendy

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Comparison of 1 H– 19 F two‐dimensional NMR scalar coupling correlation pulse sequences

Author(s) -

Marchione Alexander A.,

Dooley Rebecca J.,

Conklin Breanna

Publication year - 2014

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.4052

Subject(s) - chemistry , pulse sequence , heteronuclear single quantum coherence spectroscopy , scalar (mathematics) , two dimensional nuclear magnetic resonance spectroscopy , coupling (piping) , analytical chemistry (journal) , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , stereochemistry , physics , chromatography , mechanical engineering , geometry , mathematics , engineering

The effectiveness of hetero‐COSY, HETCOR, HMQC, and HSQC two‐dimensional NMR pulse sequences for detection of 19 F– 1 H correlations by scalar coupling was evaluated on monofluorinated and polyfluorinated test compounds. All four of these sequences were effective in observing 1 H– 19 F correlations, using either 19 F or 1 H as the observe nucleus. All four sequences were amenable, to some degree, to adjustment to observe larger or smaller couplings preferentially. A 1/2J echo filter was effectively applied to remove artifacts from 2 J FF strong coupling. The HETCOR experiments afforded the best overall combination of sensitivity, resolution and selectivity for J HF . Copyright © 2014 John Wiley & Sons, Ltd.

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