Kinetics and mechanisms of complex formation of gallium(III) and indium(III). The reactions with 4-(2-pyridylazo)resorcinol in water and other mixed solvents
Date of Original Version
The reactions of 4-(2-pyridylazo)resorcinol (H2 par) with GaIII and InIII have been studied in water and aqueous mixtures with methanol, acetonitrile, dimethyl sulphoxide, and NN-dimethylformamide at 25.0 °C and / 0.80 mol dm-3 (NaClO4). The equilibrium constant, Kc, for M(Hpar)2+ formation (M = In or Ga) has been evaluated spectrophotometrically and its variation with the medium composition has been discussed with reference to different properties of the solvents. The kinetics of dissociation of M(Hpar)2+ by H+ have been investigated. The derived formation rate constants are discussed with reference to the mechanisms which operate for the different reacting metal species.
Publication Title, e.g., Journal
Journal of the Chemical Society, Dalton Transactions
Mentasti, Edoardo, Claudio Baiocchi, and Louis J. Kirschenbaum. "Kinetics and mechanisms of complex formation of gallium(III) and indium(III). The reactions with 4-(2-pyridylazo)resorcinol in water and other mixed solvents." Journal of the Chemical Society, Dalton Transactions 12 (1985). doi: 10.1039/DT9850002615.