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
ABDELKHALEK, AA
ABDELHADY, AEDM
ELSHAHAT, MF
[J]. 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
ABDELKHALEK, AA
KHALIL, MM
KHALED, ESH
[J]. 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

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