Protolytic properties and complexation with copper(II) ions of some azo derivatives of beta-arylaminopropionic acids / Osintseva E. V.,Neudachina L. K.,Yatluk Yu. G. // RUSSIAN JOURNAL OF INORGANIC CHEMISTRY. - 2010. - V. 55, l. 10. - P. 1644-1650.

ISSN/EISSN:

0036-0236 / нет данных

Type:

Article

Abstract:

The azo coupling reaction of N-(2-carboxyethyl)anthranilic acid and N,N,N',N'-tetrabis(2-carboxyethyl)-1,3-phenylenediamine with diazosulfanilic acid yielded the complexones sodium 4-N-(2-carboxyethyl)amino-5-carboxyazobenzene-4'-sulfonate (I) and 2,4-N,N,N',N'-tetrabis(2-carboxyethyl)diaminoazobenzene-4'-sulfonic acid (II), respectively. The acidity constants of I and II (20A degrees C, mu = 0.1M KCl) were determined to be as follows: for I, pK (00) = 1.29 +/- 0.13, pK (0) = 2.92 +/- 0.07, pK (1) = 3.92 +/- 0.05, pK (2) = 5.16 +/- 0.03; for II, pK (00) = 2.35 +/- 0.06, pK (0) = 2.81 +/- 0.09, pK (1) = 3.21 +/- 0.11, pK (2) = 3.81 +/- 0.09, pK (3) = 4.34 +/- 0.04, pK (4) = 5.03 +/- 0.06, pK (5) = 6.67 +/- 0.07. The electronic absorption spectra of I and II were measured, and acid-base equilibrium scheme for I and II in aqueous solutions were suggested. The complexation constants of I and II with copper(II) ions were determined to be logK (CuQ) (I) = 5.47 +/- 0.06 and logK (CuQ) (II) = 5.72 +/- 0.13 (20A degrees C, mu = 0.1 M KCl).

Author keywords:

SPECTROPHOTOMETRIC DETERMINATION; N-ARYL-3-AMINOPROPIONIC ACIDS; LUMINESCENCE

DOI:

10.1134/S0036023610100256

Web of Science ID:

ISI:000283091000025

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	OCT
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	SPECTROPHOTOMETRIC DETERMINATION; N-ARYL-3-AMINOPROPIONIC ACIDS; LUMINESCENCE
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear
ORCID-Numbers	Osintseva, Elena/0000-0002-0229-6517
Funding-Acknowledgement	Federal Target Program ``Research and Pedagogical Human Resources for Innovative Russia{''} {[}P278]
Funding-Text	This work was supported by the Federal Target Program ``Research and Pedagogical Human Resources for Innovative Russia{''} (State contract no. P278).
Number-of-Cited-References	29
Usage-Count-Since-2013	2
Journal-ISO	Russ. J. Inorg. Chem.
Doc-Delivery-Number	666DE