ISSN:
1572-901X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary In acid perchlorate media, the title complex undergoes intramolecular redox decomposition generating ultimately Ag+ ion and oxidation products of the ligand. The reaction follows a simple first-order process, and the observed pseudo-first-order rate constant is given by kobs=k0+kKa/[H+] where Ka is the deprotonation constant of the parent complex; pKa is approximately 5.9 at 30°. The values of 105 k0(s−1) and 107 kKa (Ms−1) at 30°, I=1.0 M, are 9.3±0.1 and 11.8±1.3; corresponding ΔH≠ (kJ/mol), ΔS≠ (JK−1 M−1) values are 105±0.5, 23±1 and 79±8,-96±5, respectively. The results are compared with those for similar reaction of (ethylenebisbiguanide)silver(III) and effect of change in ligand structure on kinetic behaviours of these complexes is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01129752
