Direct detection of radical cations of NADH analogues

Shunichi Fukuzumi, Osamu Inada, Tomoyoshi Suenobu

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


The radical cation of an NADH analogue (BNAH: 1-benzyl-1,4-dihydronicotinamide) has been successfully detected as the transient absorption and ESR spectra in the thermal electron transfer from BNAH to Fe(bpy)33+ (bpy = 2,2′-bipyridine). The ESR spectra of the radical cations of BNAH and the dideuterated compound (BNAH-4,4′-d2) indicate that the observed radical cation is the keto form rather than the enol form in the tautomerization. The deprotonation rate and the kinetic isotope effects of the keto form of BNAH•+ were determined from the kinetic analysis of the electron-transfer reactions.

Original languageEnglish
Pages (from-to)14538-14539
Number of pages2
JournalJournal of the American Chemical Society
Issue number49
StatePublished - 11 Dec 2002


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