ESR and Structure of Cation Radicals of 2,3,6,7-Tetrahydro-1,4,5,8-tetrathiaanthracene and 2,3,6,7-Tetrahydro-1,4,5,8-tetrathiaphenanthrene
The cation radicals of 2,3,6,7-tetrahydro-1,4,5,8-tetrathiaanthracene (HTA) and 2,3,6,7-tetrathia-1,4,5,8-tetrathiaphenanthrene (HTP) have been characterized by ESR spectroscopy. The remarkable alternating linewidth effects were observed in the spectra of HTA+• and HTP+• both in concd H2SO4 and in AlCl3/CH3NO2.