KINETICS AND MECHANISM OF OXIDATION OF TRIS(ETHYLENEDIAMINE)-CHROMIUM(III) BY N-BROMOSUCCINIMIDE

被引：9

作者：

ABDELKHALEK, A

ABDELHADY, AEDM

ELSHAHAT, MF

机构：

[1] CAIRO UNIV,FAC SCI,DEPT CHEM,BENI SUEF BRANCH,BANI SUWAYF,EGYPT

[2] AIN SHAMS UNIV,FAC SCI,DEPT CHEM,CAIRO,EGYPT

来源：

TRANSITION METAL CHEMISTRY | 1995年 / 20卷 / 05期

关键词：

D O I：

10.1007/BF00141511

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In aqueous solutions, [Cr(en)(3)](3+) aquates to [Cr(en)(2)(H2O)(2)](3+). A kinetic study of the oxidation of [Cr(en)(3)](3+) by N-bromosuccinimide (NBS) in aqueous solutions and water-alcohol solvent mixtures was performed. The reaction is first order with respect to both total [Cr-III] and [NBS]. The rate is inversely dependent upon [H+] in the 7.0-7.9 pH range, and varies with the co-solvent according to the order: MeOH > EtOH > PrOH. An appropriate mechanism, in which the deprotonated [Cr(en)(2)(OH)(H2O)](2+) is the reactive species, is suggested. Thermodynamic activation parameters have been calculated.

引用

页码：430 / 434

页数：5

共 13 条

[1] KINETIC-STUDIES OF THE OXIDATION OF CHROMIUM(III) BY N-BROMO-SUCCINIMIDE [J].

ABDELKHALEK, AA ;

ABDELHADY, AEDM ;

ELSHAHAT, MF .

TRANSITION METAL CHEMISTRY, 1994, 19 (02) :169-172

[2]

ABDELKHALEK AA, 1993, TRANSIT METAL CHEM, V18, P555

[3] KINETICS OF THE OXIDATION OF [N-(2-HYDROXYETHYL)-ETHYLENE-DIAMINE-N,N',N'-TRIACETATO]COBALT(II) BY N-BROMOSUCCINIMIDE [J].

ABDELKHALEK, AA ;

KHALIL, MM ;

KHALED, ESH .

TRANSITION METAL CHEMISTRY, 1993, 18 (02) :153-157

[4]

ABDELKHALEK AA, 1993, TRANSIT METAL CHEM, V18, P283

[5]

BANTHIA AK, 1977, J INDIAN CHEM SOC, V54, P513

[6]

DAY MC, 1969, THEORETICAL INORGANI, P4300

[7]

OHATA M, 1964, B CHEM SOC JPN, V37, P692

[8]

OTSU T, 1969, J MACROMOL SCI CHEM, V3, P117

[9]

OTSU T, 1967, J POLYM SCI POL LETT, V5, P853

[10]

PASS G, 1974, PRACTICAL CHEM, P96

← 1 2 →