Issue 5, 1988
From the journal:

Journal of the Chemical Society, Chemical Communications

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

Klaus Bernauer  and  Jean-Jacques Sauvain  

Abstract

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).

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Article information

DOI
https://doi.org/10.1039/C39880000353
Article type
Paper

J. Chem. Soc., Chem. Commun., 1988, 353-354

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

K. Bernauer and J. Sauvain, J. Chem. Soc., Chem. Commun., 1988, 353 DOI: 10.1039/C39880000353

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