Solvent Effects on the Solvatochromism of Ferrocyphen Complex and on the Kinetics of Aquation of Tris Ferrozine iron (II) Complex

2098's picture
Nasser M. Abu-Ghalwa
Preferential solvation of bis-1,10-phenanthroline -bis- cyanoiron (II) was investigated in aqueous acetone, 2- methoxyethanol, dimethylformamide dimethylsulphoxide, isopropyl alcohol, 1.4 dioxane, and acetonitrile binary mixtures. The thermodynamic model of Frankel was used to treat preferential solvation in the binary aqueous organic mixtures and reveals that preferential solvation by the organic solvent occurs. The kinetics for the aquation of tris (ferrozine) iron (II) was studied under the various aqueous organic (ethanol, methanol, DMF, DMSO, isopropyl alcohol, and acetonitrile) mixtures.

 The order with respect to the complex is found to be unity and with respect to the acid is zero order. Also a direct proportionality was found between rate of aquation and acceptance number.