Twisted intramolecular charge transfer in a carbazole-based chromophore: the stable [(4-N-carbazolyl)-2,3,5,6-tetrachlorophenyl]bis(2,3,5,6-tetrachlorophenyl)methyl radical

A stable radical adduct 1 with carbazole as an electron-donor and polychlorotriphenylmethyl radical as an electron-acceptor shows interesting properties.