Published January 1990
| Version v1
Journal article
Oxidative dehydrogenation of the 2-aminomethylpyridine (EDTA) ruthenium (III) complex
Description
The oxidative dehydrogenation of the 2-aminomethylpyridine (ampy) ligand coordinated to the (EDTA)RU(III) complex was investigated based on cyclic voltammetry, spectoelectrochemistry and stopped-flow kinetic measurements in aqueous solution. The reaction mechanism is consistent with the deprotonation of the ampy ligand (pka =7.48), followed by a reversible one-electron transfer step. The intermediate species generated at this step undergoes a metal-induced electron transfer process, with k=227 s-1, converting into the corresponding 2-iminomethylpyridine complex. (author)
Abstract (Portuguese)
A desidrogenacao oxidativa do ligante 2-aminometilpiridina (ampy) coordenado ao complexo (EDTA)RU(III) foi investigada com base em medidas de voltametria ciclica, espectroeletroquimica e cinetica 'stopped-flow', em solucao aquosa. O mecanismo de reacao e consistente com a desprotonacao do ligante ampy (pka = 7.48), seguida de uma etapa de transferencia monoeletronica reversivel. A especie intermediaria produzida nesta etapa passa por um processo de transferencia eletronica induzida pelo metal, com k = 227 s-1, convertendo-se no complexo correspondente de 2-iminometilpiridina. (autor)Additional details
Publishing Information
- Journal Title
- Journal of the Brazilian Chemical Society
- Journal Volume
- 1
- Journal Issue
- 1
- Series
- J. Braz. Chem. Soc.
- Journal Page Range
- 17-21
- ISSN
- 0103-5053
- CODEN
- JOCSE
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 21078069
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- DEHYDROGENATION; EDTA; METHYLAMINE; PYRIDINES; RUTHENIUM COMPLEXES
- Descriptors DEC
- AMINES; AMINO ACIDS; AZINES; CARBOXYLIC ACIDS; CHELATING AGENTS; CHEMICAL REACTIONS; COMPLEXES; HETEROCYCLIC COMPOUNDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; TRANSITION ELEMENT COMPLEXES