Kinetic study and reactivity trends of hydroxide ion attack on some chromen-2-one laser dyes in binary water–methanol and water–acetone mixtures

We have investigated the kinetics of hydroxide ion attack at iron(II) chelates with 5-bromosalicylidene
derivatives of amino acids (alanine, phenylalanine, aspartic acid, histidine, and arginine) in binary aqueous mixed solvents at 298 K. The observed reactivity trends are discussed in connection with the complexes hydrophobicity/hydrophilicity, transfer chemical potentials of hydroxide ion and the complex, and the solvent effects.