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N-Amino derivatives (as picrates) of 1-dimethylamino-8-methylaminonaphthalene 5 and 5-dimethylamino-6-methylaminoacenaphthene 6 have been prepared by the electrophilic amination of 5 and 6 with O-picrylhydroxylamine.
By careful selection of 'angular' substituents it is possible to induce sizeable deformations of benzene ring structures, which correspond to bond length alternation. Ab initio calculations are used to explore the range of this effect in 1,3,5-trisubstituted benzenes with 14 different substituents (-CH 2 NH 2 , -OCH 3 , -CH 2 CH 3 , -SCH3, -NHNH 2 ,...
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