NDLI: Extraction of copper(II) carboxylates with chloroform under substoichiometric conditions

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Russian Journal of General Chemistry : Volume 82, Issue 1, January 2012

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Extraction of copper(II) carboxylates with chloroform under substoichiometric conditions

Content Provider	Springer Nature Link
Author	Zseltvay, I. I. Zseltvay, O. I. Antovich, V. P.
Copyright Year	2012
Abstract	The features are considered of binding carboxylic acids (HR) as dimeric solvated copper(II) complexes at the copper(II) extraction with chloroform under substoichiometric conditions, with excess of the metal ion in the aqueous phase. The fundamental difference in the optimization of the quantitative extraction of copper(II) in the form of any carboxylate with a maximum ratio of Cu:R and the total binding with carboxylic acids to form the copper complex of the minimum stoichiometry was noted. It was found that quantitative binding of HR occurred at the extraction of mixed-ligand acetate-carboxylate copper(II) complexes without control over the aqueous phase acidity when acetic acid medium or copper(II) acetate was used, but not copper chloride, nitrate, perchlorate, or sulfate. The possibility of determination by extraction-photometric method by the color of the Cu(II) complex was shown that was suitable only to those carboxylic acids, whose logarithm of the partition coefficient in the water-chloroform mixture was higher than three.
Starting Page	180
Ending Page	189
Page Count	10
File Format	PDF
ISSN	10703632
Journal	Russian Journal of General Chemistry
Volume Number	82
Issue Number	2
e-ISSN	16083350
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2012-03-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Chemistry

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