Electron-Transfer Reactions of Multidentate Ligand Cobalt(III) Complexes. II. The Effect of Nonbridging Ligands
- 1 July 1971
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 44 (7) , 1797-1800
- https://doi.org/10.1246/bcsj.44.1797
Abstract
The specific rates for the Fe2+ reductions of cis-Co(en)2ACl2+ (A=methyl-, ethyl-, propyl-, butyl-, ethanol-, and propanolamine), Co(dien)(en)Cl2+ and Co(tetren)Cl2+ have been determined. The observed rates are relatively insensitive to the cis-ligand of the A. The rate constant for the cis-Co(en)2ACl2+ decreases with an increase in the size of the A ligand. In such cases as that of the aminoalcohol ligand, the rate is greater than that of the corresponding alkylamine ligand complex. The effect of chelation by nonbridging ligands has been discussed by comparing the relative effectiveness for Fe2+ reductions of CoN5Cl2+ (N5=(NH3)5, (en)2NH3, (dien)(en), and tetren) with that for Cr2+ reductions of some Co(III) complexes.Keywords
This publication has 15 references indexed in Scilit:
- Electron-Transfer Reactions of Multidentate Ligand Cobalt(III) Complexes. I. The Reductions of Some Chloro(triethylenetetramine)cobalt(III) Complexes by Iron(II)Bulletin of the Chemical Society of Japan, 1971
- Inner-sphere electron-transfer reactions of cobalt(III). Nonbridging ligand effects, activation energies, and precursor complex formationInorganic Chemistry, 1970
- Electron-transfer reactions of cobalt(III). Relative rate comparisons and free-energy relationsJournal of the American Chemical Society, 1968
- The effect of nonbridging ligands on the rate of electron-transfer reactionsJournal of the American Chemical Society, 1967
- The Effect of Chelation by Nonbridging Ligands on the Rate of Reduction of Cobalt(III) Sulfato and Acetato ComplexesInorganic Chemistry, 1963
- Mechanism of Substitution Reactions in Complex Ions. V. Effect of Chelation on the Rates of Acid Hydrolysis of Some Cobalt(III) Complex IonsThe Journal of Physical Chemistry, 1955
- Spectrophotometric Investigations of Some Complexes of Ruthenium. IV. Ruthenium Reactions with Thiosemicarbazide, 4-Phenylthiosemicarbazide and Diphenylthiocarbazide1Journal of the American Chemical Society, 1952
- On the Tendency of the Metal Ions toward Complex Formation.Chemical Reviews, 1950
- Equilibrium Constants for the Formation of Ammine Complexes with Certain Metallic Ions1Journal of the American Chemical Society, 1945
- The Preparation and Properties of Inorganic Coördination Compounds. I. The Action of Some Organic Amines upon Dichloro-diethylenediamine Cobaltic Chloride1Journal of the American Chemical Society, 1945