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1 Polish Journal of Chemistry

1 2008

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Uptake of Molecular Oxygen by Co(II) Chelates with Peptides in Aqueous Solution. Part XII. Non-covalent Interactions in the Cobalt(II) - Diastereoisomeric Phenylalanyl Dipeptide Systems. Effect on Kinetics of Oxygenation

Kufelnicki A., Świątek A.

Polish Journal of Chemistry

2008

Vol. 82, nr 5

981-991

The interactions of Co(II) with a group of diastereoisomeric dipeptides containing a side chain with the aromatic phenyl ring have been studied in aqueous solution, both under inert atmosphere and in the presence of dioxygen. An effect of stereoselectivity has been observed in the metal promoted deprotonations, examined by glass electrode potentiometry and correlated with the results of UV/Vis spectroscopy. The kinetics of oxygenation were studied by the stopped flow method and related to the potentiometric results.