Abstract
pH-metric studies on the interaction of oxovanadium(IV) with hippuric and anthranilic acids and pyridine-2-aldoxime indicate the formation of monohydroxo derivatives of 1:1 chelates. The equilibrium constants for the reaction, VO2++HA+H2O⇌VO(OH)A+2H+ have been calculated as 4.47±0.07 and 6.32±0.05 in the 1:1 VO2+-hippuric or anthranilic acid systems resp. and for the reaction, VO2++H2A++H2O⇋VO(OH)A+3H+ as 8.40±0.09 in the 1:1 VO2+-pyridine-2-aldoxime hydrochloride system at 30±0.5°C (μ=0.1-KNO3).
Published Version
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