Premium
Economizing spectrometer time and broadband excitation in small‐molecule heteronuclear NMR correlation spectroscopy. Broadband HMBC
Author(s) -
Meissner Axel,
Sørensen Ole Winneche
Publication year - 2000
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 - 10.1002/1097-458x(200011)38:11<981::aid-mrc778>3.0.co;2-l
Subject(s) - heteronuclear molecule , heteronuclear single quantum coherence spectroscopy , chemistry , spectrometer , pulse sequence , broadband , two dimensional nuclear magnetic resonance spectroscopy , excitation , spectroscopy , range (aeronautics) , coupling constant , spectral line , analytical chemistry (journal) , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , optics , physics , stereochemistry , quantum mechanics , materials science , particle physics , astronomy , chromatography , composite material
Two new schemes for heteronuclear broadband NMR long‐range correlation are presented. One scheme employs the conventional low‐pass J filter HMBC pulse sequence and combines spectra recorded with different excitation delays in order to achieve broadband excitation over a range of long‐range coupling constants. The other scheme is an extension that includes a ‘non‐destructive’ low‐pass J filter allowing a one‐bond correlation spectrum to be extracted from the same data set optimized for HMBC. Hence the time to record a separate HSQC spectrum is saved. Copyright © 2000 John Wiley & Sons, Ltd.