Kinetics and equilibria of ligand substitution reactions of bromomethyl(aquo)cobaloxime with substituted imidazoles

Authors
Sridhar, V Satyanarayana, S
Citation
V. Sridhar et S. Satyanarayana, Kinetics and equilibria of ligand substitution reactions of bromomethyl(aquo)cobaloxime with substituted imidazoles, I J CHEM A, 40(2), 2001, pp. 165-170
Citations number
18
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
40
Issue
2
Year of publication
2001
Pages
165 - 170
Database
ISI
SICI code
0376-4710(200102)40:2<165:KAEOLS>2.0.ZU;2-F
Abstract
Equilibrium constants and rate of formation and dissociation for the bindin g of L to BrCH2Co(DH)(2)OH2 (where L = imidazole. 1-methylimidazole, 2-meth ylimidazole, 1.2-dimethylimidazole and 2-ethylimidazole) have been determin ed spectrophotometrically. The binding constants and rate of formation incr ease in the order 1-Me IMD > IMD > 2-Me IMD > 1.2-DM IMD > 2-Et IMD. The da ta has been interpreted based on the basicity of the ligand, steric hindran ce and pi back bonding from Co(III)-->L and hard and soft interactions.