Abstract

Reaction of 2,3ʹ-bipyridine with dibromoalkanes affords both 1ʹ-bromoalkyl-2,3ʹ-bipyridinium bromides and 1ʹ,1‴-(alkanediyl)-bis-2,3ʹ-bipyridinium dibromides. The latter diquaternary salts react with dimethyl sulfate to afford 1ʹ,1‴-(alkanediyl)-bis-(1-methyl-2,3ʹ-bipyridinium) tetraquaternary salts which are reduced to diradical dications at potentials (E0) of about -0.47 V to -0.62 V.

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