Blue transient complex formation in the electron–transfer reaction between iron(III) and a reduced nicotinamide–adenine dinucleotide analogue without an amide group

Abstract

A blue transient complex with a stoicheiometry [Fe(C₁₃H₁₀NMe)]³⁺ is formed very rapidly in the electron transfer from 9,10-dihydro-10-methylacridine (C₁₃H₁₀NMe) to Fe³⁺ in acetonitrile at 298 K. The disappearance of the absorption band (λ_max. 640 nm) due to [Fe(C₁₃H₁₀NMe)]³⁺ obeys pseudo-first-order kinetics, and is accompanied by the appearance of an absorption band (λ_max. 358 nm) due to the oxidized product, 10-methylacridinium ion (C₁₃H₉NMe⁺).