O-66 Optimisation and expansion of application area of N-aryl-3-aminoproppionic acids complexes with copper(II) in chemical analysis [Text] : доклад, тезисы доклада / E. V. Osintseva, N. V. Pechishcheva, L. K. Neudachina, K. Yu. Shunyaev, Yu. G. Yatluk // "The optimization of composition, structure and properties of metals, oxides, composites, nano- and amorphous materials." Fourth Israeli-Russian Bi-National Workshop 2005, Jerusalem-Tel-Aviv, 19-25 June 2005 г. - Jerusalem-Tel-Aviv, 2005. - P207-211 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
L 96 Luminescence properties of some N-aryl-3-aminopropionic acids and their use for determination of copper(II) in drinking and waste water [Text] / N. V. Pechishcheva, E. V. Osintseva, L. K. Neudachina, L. I. Leontev, Yu. G. Yatluk, K. Yu. Shunyaev, A. A. Vshivkov // Doklady Chemistry. - 2006. - Vol. 408, № 1. - P65-69 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
P 93 Protolytic Equilibria of Some N,N-Bis(2-carboxyethyl)aminoazobenzenesulfonic Acids in Aqueous Solution [Electronic resource] / Yu. A. Skorik, L. K. Neudachina, A. V. Osintsev, Yu. G. Yatluk, A. A. Vshivkov, E. V. Osintseva // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2002. - Vol. 38, № 3. - P385-389 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 4-[4-Bis(2-carboxyethyl)aminophenylazo]benzenesulfonic acid and 4-[2-bis(2-carboxyethyl)amino-4,5-dimethylphenylazo]benzenesulfonic acid were synthesized for the first time by azo coupling of diazosulfanilic acid with N,N-bis(2-carboxyethyl)aniline and N,N-bis(2-carboxyethyl)-3,4-xylidine, respectively. The acid ionization constants of the products were determined, their electron absorption spectra were measured, and schemes of acid-base equilibria in aqueous solution were proposed \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2002, 38 (3), 385.pdf |
O-84 Osintseva, E. V. Protolytic properties and complexation with copper(II) ions of some azo derivatives of beta-arylaminopropionic acids [Electronic resource] / E. V. Osintseva, L. K. Neudachina, Yu. G. Yatluk // Russian Journal of Inorganic Chemistry (Zhurnal Neorganicheskoi Khimii). - 2010. - Vol. 55, № 10. - P1644-1650 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 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 (20°C = 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 CuQI= 5.47 ± 0.06 and logK CuQII= 5.72 ± 0.13 (20°C = 0.1 M KCl). ?? \\\\Expert2\\nbo\\Russian Journal of Inorganic Chemistry\\2010, v. 55, N 10, с.1644.pdf |
H 65 High selective spectrophotometric copper determination in undustrial product and in environmental objects using N-aril-3-aminopropionic acids [Text] / E. V. Osintseva, L. K. Neudachina, A. A. Vshivkov, Yu. G. Yatluk // International Congress on Analytical Sciences ICAS - 2006, M., 25-30 June 2006 : book of abstracts . - М., 2006. - Vol. 2. - P510. - Bibliogr. : p. 510 (2 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ |