Journal
JOURNAL OF CHEMICAL RESEARCH-S
Volume -, Issue 4, Pages 226-228Publisher
SCIENCE REVIEWS LTD
DOI: 10.3184/030823407X209660
Keywords
coumarins; thiocoumarins; dithiocoumarins; EPR spectroscopy; spin densities
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The radical anions of 4-methyl-l-thiocoumarins and 4-methyl-l-thio-2-thionocoumarins are generated by internal electroreduction and studied by EPR spectrosopy. The spin density distribution is evaluated from the proton hfs coupling constants and by MO calculations. The radical anions of the corresponding cournarins and 2-thionocournarins are not persistent enough for EPR spectroscopic measurements.
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