6533b82cfe1ef96bd128fe02

RESEARCH PRODUCT

17O NMR study of chlorinated anisoles

E. KolehmainenE. KolehmainenJuha Knuutinen

subject

ChemistryChemical shiftSubstituentEtherGeneral ChemistryNuclear magnetic resonance spectroscopyPhotochemistryAnisolechemistry.chemical_compoundComputational chemistrypolycyclic compoundsChemical solutionGeneral Materials ScienceMolecular orbitalDispersion (chemistry)

description

The 17O NMR chemical shifts of anisole and all 19 chlorinated anisoles measured in CDCI3 at ambient temperature show a dispersion of approximately 40 ppm. The substituent chemical shifts (SCS) of di- or more highly chlorinated compounds cannot be reproduced by addition of single substituent effects. Theoretical calculations of the 17O NMR chemical shifts have been attempted by molecular mechanical and semi-empirical molecular orbital methods at the INDO level, but the results are not satisfactory.

https://doi.org/10.1002/mrc.1260261215