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• W1991332913 abstract "Abstract The complex formation between a new synthesized Schiff base and the cations Ni 2+ , Co 2+ , Cu 2+ , Zn 2+ in dichloromethane (DCM) and chloroform solutions was investigated spectrophotometrically using rank annihilation factor analysis (RAFA). The results of mole ratio plots and continuous variation data show the stoichiometry of complexation were found to be 1:1, and 2:1 metal ion to ligand. The stoichiometry was obtained as 1:1 metal ion to ligand ratio for Co 2+ , Ni 2+ and Zn 2+ in chloroform and 2:1 for Cu 2+ . In DCM the stoichiometry was obtained as 1:1 for Co 2+ and 2:1 for Ni 2+ and Zn 2+ and a consecutive 2:1 metal ion to ligand ratio was obtained for Cu 2+ . Formation constants of these complexes were estimated by application of RAFA on spectrophotometric data. In this process the contribution of ligand was removed from the absorbance data matrix when the complex stability constant acts as an optimizing object and simply combined with the pure spectrum of the ligand, the rank of the original data matrix can be reduced by one by annihilating the information of the ligand from the original data matrix." @default.
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• W1991332913 date "2011-01-01" @default.
• W1991332913 modified "2023-09-27" @default.
• W1991332913 title "Spectrophotometric determination of the formation constants of some transition metal cations with a new synthetic Schiff base in dichloromethane and chloroform using rank annihilation factor analysis" @default.
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• W1991332913 doi "https://doi.org/10.1016/j.molstruc.2010.10.025" @default.
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