title: Preparation, properties, and reduction of heteroaromatic quinoids with 1,4-diazacyclopentadien-2-ylidene terminals.
abstract: New n-type heteroaromatic quinoids with 1,4-diazacyclopentadien-2-ylidene terminals were prepared. These quinoids possess strong electron-accepting properties, comparable to dicyanomethylene analogues. Both the radical anions and dianions were generated by metal reduction using 3% Na-Hg in THF and were spectroscopically characterized.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Kozaki
authors.forename: Asuka
authors.initials: A
authors.lastname: Isoyama
authors.forename: Kogen
authors.initials: K
authors.lastname: Akita
authors.forename: Keiji
authors.initials: K
authors.lastname: Okada