Ligand effects on the kinetics of the reversible binding of NO to selectedaminocarboxylato complexes of iron(II) in aqueous solution

Citation
T. Schneppensieper et al., Ligand effects on the kinetics of the reversible binding of NO to selectedaminocarboxylato complexes of iron(II) in aqueous solution, EUR J INORG, (9), 2001, pp. 2317-2325
Citations number
29
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
ISSN journal
1434-1948 → ACNP
Issue
9
Year of publication
2001
Pages
2317 - 2325
Database
ISI
SICI code
1434-1948(200109):9<2317:LEOTKO>2.0.ZU;2-T
Abstract
Rate constants for the formation and dissociation of Fe-II(L)NO (L = aminoc arboxylato) have been determined using stopped-flow, temperature jump, flas h photolysis, and pulse radiolysis techniques. For a series of ligands the formation rate constants vary between 1.6 x 10(6) and 2.4 x 10(8) M-1 s(-1) , whereas the dissociation rate constants vary between 0.11 and 3.2 x 10(3) s(-1) at 25 degreesC. These rate constants result in stability constants ( K-NO = k(f)/k(d)) ranging from 5.0 x 10(2) to 1.1 x 10(7) M-1, which are in good agreement with values of K-NO determined by a combined spectrophotome tric and potentiometric technique. The results are discussed with reference to available literature data, and interpreted in terms of a generalized re action mechanism.