title: Synthesis, characterization, spectroscopic and thermodynamic studies of charge transfer interaction of a new water-soluble cobalt(II) Schiff base complex with imidazole derivatives.
abstract: The water-soluble cobalt(II) tetradentate Schiff base complex [Co(II)L](ClO4)(2), L: (N,N'-bis(5-[(triphenylphosphonium)-methyl]salicylidine)-o-phenylenediamineperchlorate has been synthesized and characterized. This complex forms charge transfer (CT) complexes with imidazole and 1-methylimidazole. The formation constant, molar absorptivity (epsilon'), and thermodynamic parameters for charge transfer complexes formation of cobalt(II) Schiff base complexes with imidazole derivatives were determined by using UV-vis spectrophotometric method in aqueous solutions at constant ionic strength (I=0.2mol dm(-3) KNO3) at pH 6.0 and various temperatures between 292 and 315K.
authors.affiliation: Department of Chemistry, Sharif University of Technology, Azadi Ave., P.O. Box 11155-9616, Tehran, Iran. dboghaei@sharif.edu
authors.forename: Davar M
authors.initials: DM
authors.lastname: Boghaei
authors.forename: Elham
authors.initials: E
authors.lastname: Askarizadeh
authors.forename: Abolfazl
authors.initials: A
authors.lastname: Bezaatpour
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D007093:Imidazoles / Q000138:chemical synthesis / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008024:Ligands; D008745:Methylation; D015394:Molecular Structure; D012545:Schiff Bases / Q000737:chemistry; D012995:Solubility; D013053:Spectrophotometry / Q000379:methods*; D013816:Thermodynamics; D014867:Water / Q000737:chemistry*
chemical_list: D007093:Imidazoles; D007477:Ions; D008024:Ligands; D012545:Schiff Bases; D014867:Water; D003035:Cobalt; C029899:imidazole