Chemistry Letters

7, 7-Dicyano-8, 8-bis [4-(N, N-dimethylamino) phenyl]-meta-xylylenes: The First Stable Zwitterionic Metaxylylene Derivatives.

T Kawase, T Iwata, M Oda

Index: Kawase, Takeshi; Iwata, Tohru; Oda, Masaji Chemistry Letters, 2003 , vol. 32, # 4 p. 322 - 323

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Abstract

Metaxylylene 1 is potentially regarded as a resonance hybrid between a diradical form A and a zwitterionic form B. Although the diradical A has been received much attention mainly from the viewpoints of high-spin organic compounds,1 few studies on the zwitter ion B have been performed so far.2 Recently we have reported the highly polarized character of 7,7-dicyano-8 ,8-bis(4- dimethylaminophenyl)-p-quinodimethane (2).3 The results sug- gest that ...