Premium
HCSE method for detection of small carbon–carbon couplings and their signs, comparison with SLAP pulse sequence
Author(s) -
Blechta Vratislav,
Schraml Jan
Publication year - 2013
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.4011
Subject(s) - homonuclear molecule , chemistry , carbon fibers , pulse sequence , proton , coupling (piping) , spectral line , sign (mathematics) , analytical chemistry (journal) , nuclear magnetic resonance , molecule , organic chemistry , nuclear physics , physics , algorithm , mechanical engineering , mathematical analysis , mathematics , astronomy , composite number , computer science , engineering
Performance of homonuclear coupling sign edited (HCSE) experiment applied to detection of signed carbon–carbon couplings is discussed using a set of already measured samples of nine monosubstituted benzenes. It is shown that coupling sign detection is insensitive to the settings of carbon–carbon polarization transfer delays. The HCSE spectra of ten from the total of 43 measured carbon–carbon couplings were considerably influenced by relaxations and proton–proton strong couplings. These effects are quantitatively discussed. The results of HCSE and SLAP experiments are compared. It is shown that the two methods may complement each other in detection of signed carbon–carbon couplings. Copyright © 2013 John Wiley & Sons, Ltd.