Thermodynamic and spectroscopic studies of Cu(II) and Ni(II) complexes with a new proline–threonine dipeptide ligand - Archive ouverte HAL Access content directly
Journal Articles Journal of Inorganic Biochemistry Year : 2008

Thermodynamic and spectroscopic studies of Cu(II) and Ni(II) complexes with a new proline–threonine dipeptide ligand

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Abstract

The interactions between a new proline–threonine dipeptide ligand with two metallic cations were investigated in aqueous solution. The metallic cations studied were the copper(II) and the nickel(II), which are involved in many biological processes. The combination of potentiometry, UV–visible spectrophotometry, EPR, and mass spectrometry was used to determine the formation constants of the complexes and their structure in solution. The complexation sites were identified using electronic absorption and EPR spectroscopies. Copper complexes were obtained as square planar or square pyramidal mononuclear species, whereas nickel complexes were obtained as dinuclear species with an octahedral geometry.

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hal-02545919 , version 1 (17-04-2020)

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Stéphanie Boudesocque, Ziad Damaj, Laurent Dupont, Jean-Bernard Behr, Emmanuel Guillon. Thermodynamic and spectroscopic studies of Cu(II) and Ni(II) complexes with a new proline–threonine dipeptide ligand. Journal of Inorganic Biochemistry, 2008, 102 (7), pp.1514-1522. ⟨10.1016/j.jinorgbio.2008.01.021⟩. ⟨hal-02545919⟩

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