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C-13 NMR Investigation of the Ph-Dependence of Copper(II) Complexation to Glucuronic-Acid
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1986
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Differential LineEngineeringBiochemistryNatural SciencesCoordination ComplexC-13 Nmr InvestigationPhysical ChemistryAnalytical ChemistryMolecular ComplexComputational ChemistryChemistryGlucuronic AcidParamagnetic CopperInorganic Compound
The interaction of paramagnetic copper(II) ions with glucuronic acid in aqueous solution was studied by differential line broadening analysis of carbon-13 n.m.r. spectra. Evidence is presented for pH-dependent complexation behaviour, with simple carboxylate complexation dominating below pH 4.5, and a more complicated bidentate coordination mode involving O 3 above pH 4.5.