Kinetics and mechanism of substitution of bis(tptz)iron(II) by 2,2′-bipyridine and 1,10-phenanthroline

被引：0

作者：

Rao, GV ^{[1
]}

Sridhar, Y ^{[1
]}

Hela, PG ^{[1
]}

Padhi, T ^{[1
]}

Anipindi, NR ^{[1
]}

机构：

[1] Andhra Univ, Sch Chem, Visakhapatnam 530003, Andhra Pradesh, India

来源：

TRANSITION METAL CHEMISTRY | 1999年 / 24卷 / 05期

关键词：

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The kinetics of substitution of Fe(tptz)(2)(2+) by 2,2'-bipyridine and 1,10-phenanthroline have been investigated in acetate buffers in the 3.6-5.6 pH range employing stopped-flow spectrophotometry. These reactions are very fast and complete within 5 s. The rate of substitution is linearly dependent on [phen] and [bpy](2), and increases with the increase in pH. Suitable mechanisms have been proposed involving the unprotonated form of the entering ligand, viz. bipyridine/phenanthroline as the reactive species. The pK(a) values of bipyridine and phenanthroline, determined from the kinetic data, are in agreement with the literature values. It is concluded that the substitutions of iron(II)-diimine complexes also occur by an associative mechanism.

引用

页码：566 / 570

页数：5

共 50 条

[1] Kinetics and mechanism of substitution of bis(tptz)iron(II) by 2,2′-bipyridine and 1,10-phenanthroline
Garimella Visweswara Rao
Yeleswarapu Sridhar
Pamidipati Gayatri Hela
Trilochan Padhi
Nageswara Rao Anipindi
[J]. Transition Metal Chemistry, 1999, 24 (5) : 566 - 570
[2] KINETICS AND MECHANISM OF 1,10-PHENANTHROLINE AND 2,2′-BIPYRIDINE-CATALYSED OXIDATION OF TRIS(1,10-PHENANTHROLINE)-IRON(II) AND TRIS(2,2′-BIPYRIDINE)IRON(II) BY CHROMIUM(VI) IN SULPHURIC ACID MEDIUM
Reddy, T. S.
Satyanarayana, T.
Anipindi, N. R.
Reddy, R. N.
[J]. OXIDATION COMMUNICATIONS, 2011, 34 (02): : 292 - 297
[3] Adducts of bis(acetylacetonato)zinc(II) with 1,10-phenanthroline and 2,2′-bipyridine
Brahma, Sanjaya
Sachin, H. P.
Shivashankar, S. A.
Narasimhamurthy, T.
Rathore, R. S.
[J]. ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 2008, 64 : M140 - M143
[4] The kinetics of substitution reaction of oxydiacetate and thiodiacetate copper(II) complexes with 1,10-phenanthroline and 2,2′-bipyridine
Pranczk, Joanna
Jacewicz, Dagmara
Wyrzykowski, Dariusz
Tesmar, Aleksandra
Chmurzynski, Lech
[J]. JOURNAL OF CHEMICAL SCIENCES, 2015, 127 (10) : 1845 - 1852
[5] The kinetics of substitution reaction of oxydiacetate and thiodiacetate copper(II) complexes with 1,10-phenanthroline and 2,2’-bipyridine
JOANNA PRANCZK
DAGMARA JACEWICZ
DARIUSZ WYRZYKOWSKI
ALEKSANDRA TESMAR
LECH CHMURZYŃSKI
[J]. Journal of Chemical Sciences, 2015, 127 : 1845 - 1852
[6] PREPARATION OF BIS(2,2'-BIPYRIDINE)-CARBONATORUTHENIUM(II) AND BIS(1,10-PHENANTHROLINE)-CARBONATORUTHENIUM(II) COMPLEXES
TANAKA, M
NAGAI, T
MIKI, E
MIZUMACHI, K
ISHIMORI, T
[J]. NIPPON KAGAKU KAISHI, 1979, (08) : 1112 - 1114
[7] Kinetics and mechanism of 2,2′-bipyridine and 1,10-phenanthroline catalysed oxidation of bis(2,2′,6′,2"-terpyridine)iron(II) by chromium(VI) in sulphuric acid medium
Reddy, K. P. P. R. Mohan
Satyanarayana, T.
Anipindi, N. R.
Reddy, R. N.
[J]. OXIDATION COMMUNICATIONS, 2008, 31 (02): : 373 - 379
[8] KINETICS OF ACID HYDROLYSIS OF DICYANOBIS(2,2]-BIPYRIDINE)IRON)2) + DICYANOBIS)1,10-PHENANTHROLINE) IRON)2)
BALZANI, V
MOGGI, L
CARASSITI, V
[J]. INORGANIC CHEMISTRY, 1964, 3 (09) : 1252 - &
[9] Kinetics and mechanism of substitution of iron(II)-triazine complexes by 1,10-phenanthroline
Bellam, Rajesh
Anipindi, Nageswara Rao
[J]. TRANSITION METAL CHEMISTRY, 2012, 37 (05) : 489 - 495
[10] Kinetics and mechanism of substitution of iron(II)–triazine complexes by 1,10-phenanthroline
Rajesh Bellam
Nageswara Rao Anipindi
[J]. Transition Metal Chemistry, 2012, 37 : 489 - 495

← 1 2 3 4 5 →