The complex formation of copper(II) with GHL and HSA |
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| Authors: | MJA Rainer BM Rode |
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| Institution: | Institute of Inorganic and Analytical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria |
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| Abstract: | The formation constants for complexes of copper(II) with GHL have been determined by means of pH titrations and ESR spectroscopy in aqueous solutions. GHL has an extremely high affinity for copper(II) and forms very stable 1:1 complexes and a comparatively weak 1:2 complex. The ? amino group of GHL seems not to be involved in complex formation as can be deducted from both equilibrium constants and ESR spectroscopy. The ternary system copper(II)-GHL-HSA was investigated by ESR spectroscopy and optical absorption spectroscopy in aqueous solution at physiological pH (7.4). At equimolar concentrations, copper(II), HSA and GHL form a ternary complex. |
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| Keywords: | Author to whom correspondence should be addressed |
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