Phosphaquinomethane and phosphathienoquinomethanes, and their anion radicals

Fumiki Murakami, Shigeru Sasaki, Masaaki Yoshifuji

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Phosphaquinomethane and phosphathienoquinomethanes sterically protected by Mes* (Mes* = 2,4,6-tri-tert-butylphenyl) were synthesized by 1,6-dehydration of the corresponding 4-phosphinoaryl carbinols. Structural similarities to the conventional quinoid compounds were revealed by 1H, 13C, and 31P NMR study and further confirmed by X-ray crystallography of the phosphathienoquinomethane. The corresponding anion radicals were generated by reduction with sodium, and considerable delocalization of an unpaired electron was demonstrated by EPR.

Original languageEnglish
Pages (from-to)8926-8927
Number of pages2
JournalJournal of the American Chemical Society
Issue number25
Publication statusPublished - 2005 Jun 29


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