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Study of 13 C– 19 F and 1 H– 19 F couplings in some fluorinated aromatic compounds using two‐dimensional 13 C– 1 H chemical shift correlation spectroscopy with proton homonuclear decoupling
Author(s) -
Guo Wei,
Wong Tuck C.
Publication year - 1986
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.1260240115
Subject(s) - chemistry , coupling constant , homonuclear molecule , naphthalene , proton , analytical chemistry (journal) , biphenyl , carbon 13 , crystallography , stereochemistry , physics , molecule , nuclear physics , organic chemistry , particle physics , chromatography
The magnitudes and relative signs of 13 C– 19 F and 1 H– 19 F coupling constants in 6‐F‐indole, 5‐ and 6‐F‐tryptamine, 5‐F‐indole‐3‐carboxaldehyde, 2‐ and 4‐F‐biphenyl, droperidol, flusperilene, 1‐F‐naphthalene and 3‐F‐fluroanthene (F = fluoro) have been determined using two‐dimensional 13 C– 1 H chemical shift correlation spectroscopy with proton homonuclear decoupling. Except for one long‐range 1 H– 19 F coupling constant, all the other observed 1 H– 19 F couplings in these compounds were found to be of the same sign as the corresponding 13 C– 19 F coupling constants. The variation of the magnitude of tlfe coupling constants due to substitution is relatively insignificant.