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Cyclic voltammetric behaviour of exceptionally persistent nitrogen-centred free radicals. N-(arylthio)-2,4,6-triphenylanilino radicals

✍ Scribed by Y. Miura; A. Tanaka

Book ID: 103063230
Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 270 KB
Volume: 37
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(92)87127-l

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✦ Synopsis

Thloammyls (RN%') are an interesting family of persistent nitrogen-centred free radlcals[ 1] Quite recently, we reported preparation and lsolatlon of extremely persistent nitrogen-centred free radicals, N-(arylthlo)-2,4,6-trlphenylamhno radicals (1)[2] The radicals are not destroyed by atmosphenc oxygen, even m solution X-ray crystallographic analysis of compound la has shown that it adopts a planar conformation This planar conformation 1s largely different from that of the previously isolated N-[(4-mtrophenyl)thro]-2,4,6-tn-tert-butylamhno radical (2) m which the coplane conststmg of the nitrogen atom and the Cmtrophenylthlyl group makes an angle of 90 7" with the amhno benzene rmg due to the stenc congestion surrounded by the ortho tert-butyl

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