Acid-Base and Complex-Forming Properties of 2-Dialkylaminomethylphenols with respect to Copper(II) in a Tetrachloromethane-Water Two-Phase System |
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Authors: | Sal'nikov Yu I Boos G A Ryzhkina I S Yusupova G R |
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Institution: | (1) Kazan State University, Kazan, Tatarstan, Russia;(2) Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center, Russian Academy of Sciences, Kazan, Tatarstan, Russia |
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Abstract: | The protolytic properties of 2-dialkylaminomethylphenols were characterized by effective partition constants in the tetrachloromethane-water medium at 298 K by means of two-phase potentiometric titration. A correlation was found between the effective partition constant including the dissociation constant of the protonated form of 2-dialkylaminomethylphenol and the constants of the substituents. The partition constants of the compounds were calculated. The formation of 1:1 charged copper(II) complexes in aqueous solution and of 2:1 neutral complexes in the organic phase was revealed. The stability constants of the complexes in aqueous solution and the partition constants of the 2:1 complexes were estimated. |
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