Synthesis, spectroscopic and magnetic properties of m-p aniline tetramers

Alternating m-p-N-hexylaniline and aniline tetramers have been synthesized via palladium-catalyzed amination reactions. The tetramers can be oxidized with m-chloroperbenzoic acid or NOBF4 and form radical cations stable in acidic media. The magnetization measurements of oxidized N-hexylaniline or p-aniline tetramers reveal the paramagnetic-type behaviour.