Stereoselectivity in the reaction of spinach plastocyanin with optically-active reducing agents

Détails

ID Serval
serval:BIB_AA478B994591
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Stereoselectivity in the reaction of spinach plastocyanin with optically-active reducing agents
Périodique
Journal of the Chemical Society, Chemical Communications
Auteur⸱e⸱s
Bernauer K., Sauvain Jean-Jacques
ISSN
0022-4936
Statut éditorial
Publié
Date de publication
1988
Peer-reviewed
Oui
Numéro
5
Pages
353-354
Langue
anglais
Résumé
The kinetics of the reduction of spinach plastocyanin by optically active iron(II) complexes of 2,6-bis[3-(S)- or 3-(R)-carboxy-2-azabutyl]pyridine [(S,S)- or (R,R)-ALAMP] have been studied and the complex with (R,R)-ALAMP (Δ-configuration) reacts 1.6 to 2.0 times faster at different values of pH and temperature than the (S,S)-enantiomer; the activation parameters show that this observed stereoselectivity is a consequence of the differences in the activation entropies (ΔΔS?(Δ-Λ)=+15 J mol-1 K-1), which over-compensates the effect of the activation enthalpy, the latter being in favour of the complex with the Δ-configuration (ΔΔH?(Δ-Λ)=+ 3.0 kJ mol-1).
Web of science
Création de la notice
17/08/2011 12:25
Dernière modification de la notice
20/08/2019 15:14
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