Bulletin of the Chemical Society of Japan · 1989 · 28 citations · 0 references
Natural SciencesChemistryMaterials ScienceChemical KineticsInorganic ChemistryPhysical ChemistryColor ChemistryCoordination ChemistryMetal-ligand BondingTransition Metal ChemistryTransition Metal ComplexesChelate Complexation ReactionsColor Of Coordination CompoundsComplex Formation StudiesComplexation ChemistryKinetics Of Coordination CompoundsMetal Complexes For ImagingNatural DyesSpectral Characteristics
Abstract Complexing processes occurring between reactive matrices obtained from Fe(III), Co(III), Ni(II), Cu(II) hexacyanoferrates(II), and alkaline solutions of various nitrogen-sulfur-containing chelating ligands in thin gelatin layers have been studied. With Fe(III) and Cu(II) hexacyanoferrates, complexing process is found out to proceed according to SN1 mechanism, while in Co(III) and Ni(II) hexacyanoferrates matrices, SN2 mechanism is realized. The schemes of the processes proceeding in each of the above matrices are given. The examples of the kinetic curves for particular systems “hexacyanoferrate(II)-ligand” as well as spectral characteristics of thin gelatin layers containing chelate complexes formed as a result of the chelating process are presented. The possibility of practical utilization of complexing processes studied for obtaining non-silver photographic images from light-resistant metallorganic dyes is reported.