Kinetics and Mechanism of Reduction of Iron (III) Kojic Acid Complex by Ascorbic Acid

被引：0

作者：

Hussain, Zahid ^{[1
]}

Nisar, Shazia ^{[2
]}

Kazmi, Syed Arif ^{[1
]}

机构：

[1] Univ Karachi, HEJ Res Inst Chem, Int Ctr Chem & Biol Sci, Karachi 75270, Pakistan

[2] Univ Karachi, Dept Chem, Karachi 75270, Pakistan

来源：

JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN | 2013年 / 35卷 / 03期

关键词：

Iron (III) Kojic acid complex; Reduction Kinetics; Mechanism; Ascorbic acid; COORDINATION CHEMISTRY; IRON(III) COMPLEX; METAL IONS; SIDEROPHORES; RELEASE; TRANSPORT; ENTEROBACTIN; ASPERGILLUS; THALASSEMIA; METABOLISM;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Kinetics of reduction of iron (III) kojic acid complex by ascorbic acid has been carried out using photodiode array spectrophotometer over the ranges: 4.0 <= pH <= 5.5 and 5.0 <= T <= 25.0 degrees C at ionic strength 0.2 M under pseudo-first order conditions by stopped-flow technique. Rate of the reaction was found to be pH dependent. The redox reaction followed the saturation kinetics. The rate law is deduced as follows: Rate = k(3)K(eq)[H+][HAsc(-)][Fe(KA)(3)]/[HKA] + K-eq[H+][HAsc(-)] The activation parameters of this reaction were determined. A mechanism consistent with this rate law has been proposed.

引用

页码：769 / 774

页数：6

共 50 条

[31] Kinetics of methylene blue reduction by ascorbic acid
Mowry, S
Ogren, PJ
[J]. JOURNAL OF CHEMICAL EDUCATION, 1999, 76 (07) : 970 - 974
[32] KINETICS OF REDUCTION OF HEXACYANOFERRATE(3) BY ASCORBIC ACID
MEHROTRA, US
AGRAWAL, MC
MUSHRAN, SP
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1969, 73 (06): : 1996 - &
[33] Kinetics and the mechanism of iron(II) reduction of cis-α-halogeno(cetylamine)(triethylenetetramine)cobalt(III) complex ion in aqueous acid medium
Santhakumar, Kannappan
Kumaraguru, Narayanasamy
Arunachalam, Sankarlingam
Arumugham, Mahadevimanglam Narayanasamy
[J]. TRANSITION METAL CHEMISTRY, 2006, 31 (04) : 475 - 481
[34] Kinetics and the Mechanism of Iron(II) Reduction of cis-α-halogeno(cetylamine) (triethylenetetramine)cobalt(III) Complex Ion in Aqueous Acid Medium
Kannappan Santhakumar
Narayanasamy Kumaraguru
Sankarlingam Arunachalam
Mahadevimanglam Narayanasamy Arumugham
[J]. Transition Metal Chemistry, 2006, 31 : 475 - 481
[35] Studies on cobalt(III) metallosurfactants. Kinetics and mechanism of reduction of cobalt(III) by iron(II) in aqueous acid medium
Santhakumar, K
Kumaraguru, N
Arunachalam, S
Arumugham, MN
[J]. TRANSITION METAL CHEMISTRY, 2006, 31 (01) : 62 - 70
[36] Studies on Cobalt(III) Metallosurfactants. Kinetics and Mechanism of Reduction of Cobalt(III) by Iron(II) in Aqueous Acid Medium
K. Santhakumar
N. Kumaraguru
S. Arunachalam
M. N. Arumugham
[J]. Transition Metal Chemistry, 2006, 31 : 62 - 70
[37] KINETIC DETERMINATION OF IRON(III) BASED ON IRON(III)-CATALYZED REDUCTION OF TRIS(OXALATO)COBALTATE(III) BY ASCORBIC-ACID
OHASHI, K
SAGAWA, T
GOTO, E
YAMAMOTO, K
[J]. ANALYTICA CHIMICA ACTA, 1977, 92 (01) : 209 - 211
[38] Electrochemical investigation of iron(III) complexes with some kojic acid derivatives
Kotocova, A
Makanova, J
Sima, J
Veverka, M
[J]. CHEMICAL PAPERS, 1998, 52 (02) : 119 - 122
[39] EFFICIENCY OF THE PHOTOREDUCTION OF IRON(III) COMPLEXES WITH KOJIC ACID-DERIVATIVES
SIMA, J
CHOCHULOVA, B
VEVERKA, M
MAKANOVA, J
HAJSELOVA, M
BRADIAKOVA, A
[J]. POLISH JOURNAL OF CHEMISTRY, 1993, 67 (08) : 1369 - 1374
[40] Photoredox Properties of Kojic Acid and Its Derivatives Complexed to Iron(III)
Sima, J.
Makanova, J.
Veverka, M.
[J]. Monatshefte fuer Chemie, 126 (02):

← 1 2 3 4 5 →