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1D NMR Homodecoupled 1 H Spectra with Scalar Coupling Constants from 2D NemoZS ‐DIAG Experiments
Author(s) -
Cotte Axelle,
Jeannerat Damien
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201500831
Subject(s) - coupling constant , spectral line , physics , scalar (mathematics) , nmr spectra database , chemistry , nuclear magnetic resonance , quantum mechanics , mathematics , geometry
A two‐dimensional liquid‐state NMR experiment cleanly separating chemical shifts and scalar couplings information is introduced. This DIAG experiment takes advantage of a drastic reduction of the spectral window in the indirect dimension to be quickly recorded and of a new non‐equidistant modulation of the selective pulse to improve the sensitivity of the broadband homodecoupling Zangger–Sterk sequence element by one order of magnitude. A simple automatic analysis results in 1D spectra displaying singlets and lists of the scalar couplings for first‐order multiplets. This facilitates the analysis of 1D spectra by resolving multiplets based on their differences in chemical shifts and coupling structures.