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The interaction between the aluminum ion (Al 3+ ) and Inogashira fulvic acid (IFA) at pH 3 was investigated using the calibration curve method for 27 Al NMR spectra. The average conditional stability constant (logK) can be calculated to be 2.00–2.04 (M −1 ) (bidentate–monodentate) from the results of 27 Al NMR measurements. In addition, because IFA has various coordination...
A macrocyclic ligand modified with pendant arm, N-mono(2-aminoethyl)-1,4,8,11-tetraazacyclotetradecane (maec), and its copper(II) complex have been synthesized and characterized. The structure of the copper(II) complex in aqueous solutions at pH 2–6 was determined by extended X-ray absorption fine structure (EXAFS). The EXAFS spectra were analyzed using an FEFF8. It was difficult to determine the...
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