Chemistry of Pyrrole in Room-Temperature Chloroaluminate Melts.

摘要

The chemistry of pyrrole in room-temperature molten salts composed of mixtures of AlCl3 with 1-methyl-3-ethylimidazolium chloride has been studied by 1H- and 13C-NMR spectroscopy. The spectra indicate that an adduct is formed between pyrrole and AlCl3 in melts containing an excess of A1C13; no adduct formation occurs in melts containing excess organic chloride. The structure of the adduct is deduced and used to explain the previously observed inability to polymerize pyrrole electrochemically in acidic melts. Keywords: Polypyrrole; Chloroaluminates; NMR spectroscopy; Adduct formation, Reprints. (JES)