Kinetic, mechanistic and spectral investigations of ruthenium(III)-catalysed oxidation of 4-hydroxycoumarin by alkaline diperiodatonickelate(IV) (stopped flow technique)

The title reaction was studied using spectrophotometer connected to a rapid kinetic accessory. A mechanism involving the formation of complex between 4-hydroxycoumarin and hydroxylated species of ruthenium(III) has been proposed. The product was characterized by IR, NMR, and spot tests.