Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Phenyl-cyclohexyl, phenyl-cyclopentyl, phenyl-cyclobutyl, phenyl-l-benzylcyclobutyl, and phenyl-l-benzylcyclopropylcarbone were photochemically generated in a matrix at low temperature and studied by ESR. ... (b) For a review see ,in: GA Olah, PR Scheyer (Eds.), Carbonium ...