The interaction of the vanadyl(IV) cation with phytic acid |
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| Authors: | Patricia A M Williams Enrique J Baran |
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| Institution: | (1) Química Inorgánica (QUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, (1900) La Plata, Argentina |
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| Abstract: | The interactions of VO2+ with phytate to form both soluble and insoluble complexes, have been studied by electronic absorption spectroscopy. A soluble
1∶1 VO2+: phytate complex is formed at pH <1. At higher pH-values insoluble complexes are produced. Two different solid complexes,
obtained respectively at pH=2 and 4, were isolated and characterized. The maximal bonding ratio of VO2+: phytate was found to be 4, on the basis of a pH binding profile. |
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| Keywords: | Vanadyl(IV)-phytate complexes effect of the pH value soluble and insoluble complexes spectroscopic characterization |
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