Premium
Measurement of long‐range proton—carbon coupling constants in medium‐sized molecules
Author(s) -
Hricovíni Miloš,
Liptaj Tibor
Publication year - 1989
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.1260271108
Subject(s) - chemistry , pulse sequence , proton , range (aeronautics) , molecule , coupling constant , spectral line , coherence (philosophical gambling strategy) , carbon fibers , relaxation (psychology) , pulse (music) , analytical chemistry (journal) , nuclear magnetic resonance , molecular physics , optics , detector , nuclear physics , organic chemistry , physics , quantum mechanics , psychology , social psychology , materials science , composite number , composite material
A modified version of the two‐dimensional semiselective INEPT experiment is presented which allows the determination of long‐range proton‐carbon couplings in medium‐sized molecules. The difference in the T 1 relaxation times is utilized for the reduction of the number of protons from which coherence is transferred. This results in a simplification of the 1D and 2D spectra obtained. The capability of the proposed pulse sequence is demonstrated by the determination of the long‐range couplings in a model molecule.