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Towards perfect NMR: Spin‐echo versus perfect‐echo building blocks
Author(s) -
Parella Teodor
Publication year - 2019
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.4776
Subject(s) - homonuclear molecule , heteronuclear molecule , chemistry , spin echo , echo (communications protocol) , nuclear magnetic resonance , phase (matter) , spin (aerodynamics) , nmr spectra database , pulse sequence , nuclear magnetic resonance spectroscopy , spectral line , molecule , physics , magnetic resonance imaging , computer science , stereochemistry , quantum mechanics , medicine , computer network , organic chemistry , radiology , thermodynamics
The development of new tools to improve the quality of nuclear magnetic resonance (NMR) spectra is a challenging task. The concept of “perfect NMR” includes the design of robust pulse sequences that allow an investigator to obtain undistorted pure in‐phase signals, with pure absorption lineshapes that are free of phase anomalies derived from undesired J modulations. Here, alternative NMR building blocks to the spin‐echo that are based on a general double SE module, known as a perfect‐echo, are reviewed. Several implementations to minimize/remove unwanted dispersive contributions in homonuclear and heteronuclear NMR experiments are described and illustrated with some examples of broad interest for small molecules.