The radical cation of bicyclo[2.2.2]octa-2,5,7-triene (barrelene). An e.s.r. and ENDOR study
Abstract
The radical cation of bicyclo[2.2.2]octa-2,5,7-triene (barrelene) in a non-degenerate A′2 ground-state has been characterized by its hyperfine data with the use of e.s.r. and ENDOR spectroscopy (coupling constants: 0.603 mT for the six alkenic and 0.115 mT for the two bridgehead protons).