Thermodynamic characteristic of complex formation of some metals with 3-(4-chlorophenylazo)pentane-2,4-dione in aqueous ethanol

被引：6
作者：
Aliyeva, R. A. [1 ]
Pashaev, F. G. [1 ]
Gasanov, A. G. [1 ]
Mahmudov, K. T. [1 ]
机构：
[1] Baku State Univ, Dept Chem, Baku 1148, AZ, Azerbaijan
来源：
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2009年 / 54卷 / 09期
关键词：
DISSOCIATION-CONSTANTS; STABILITY-CONSTANTS;
D O I：
10.1134/S0036023609090113
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Effective charges of atoms in tautomeric forms (enol-azo, keto-azo, hydrazo) of 3-(4-chlorophenylazo) pentane-2,4-dione (L) have been determined by MO LCAO in the Huckel approximation. The complex formation of a series of metals with L in aqueous ethanol has been investigated by potentiometric and conductometric titration. Based on the results of potentiometric titration, the standard thermodynamic functions of complex formation have been established. They vary in the following order: |Delta G(0)|:Fe > Cu > Co > Ni > UO2 > Cd > Zn > Mn > Mg > Ca, |Delta H-0|: Fe > Cu > UO2 > Ni > Co > Zn > Cd > Mn > Mg > Ca, Delta S-0: Ca > Mg > Mn > Cd > Co > Zn > Ni > Cu > Fe > UO2. The complex of copper(II) with L has been identified by X-ray diffraction, and its thermal properties have been studied.
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页码：1407 / 1411
页数：5
相关论文
共 26 条
  • [1] Albert A., 1962, Ionization Constants of Acids and Bases
  • [2] ALIEVA RA, 2004, ZAVODSK LAB, V70, P22
  • [3] Aliyeva RA, 2004, RUSS J INORG CHEM+, V49, P1111
  • [4] Aliyeva RA, 2005, J ANAL CHEM+, V60, P137
  • [5] Aliyeva RA, 2004, RUSS J INORG CHEM+, V49, P1458
  • [6] Aliyeva RA, 2004, RUSS J INORG CHEM+, V49, P1461
  • [7] Aliyeva RA, 2005, RUSS J INORG CHEM+, V50, P131
  • [8] Bates R.G., 1964, DETERMINATION PH THE
  • [9] STABILITY OF METAL CHELATES .1. IMINODIACETIC AND IMINODIPROPIONIC ACIDS
    CHABEREK, S
    MARTELL, AE
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1952, 74 (20) : 5052 - 5056
  • [10] CHRISTENSEN JJ, 1968, PHYS METHODS ADV INO
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