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Substituent effects on 13 C 13 C coupling constants and chemical shifts in 13 C labelled polycyclic aromatic hydroxy compounds
Author(s) -
Hansen P. E.,
Poulsen O. K.,
Berg A.
Publication year - 1975
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270071004
Subject(s) - substituent , chemical shift , coupling constant , chemistry , carbon 13 , computational chemistry , coupling (piping) , carbon fibers , medicinal chemistry , stereochemistry , materials science , physics , particle physics , quantum mechanics , composite number , metallurgy , composite material
The effects of an hydroxy substituent on 13 C 13 C coupling constants and 13 C chemical shifts have been measured in 1‐hydroxynaphthalene‐2‐ 13 C and 1‐hydroxypyrene‐1‐ 13 C. The changes observed in the 13 C 13 C couplings show the effect of a substituent attached directly to the labelled carbon or to a carbon ortho to this. In both situations the effect is a decrease in the numerical magnitude of most of the long range 13 C 13 C coupling constants.