Voltamperometric study of the titanium IV–oxalate complexes

Rate constants and concentration equilibrium constants for the chemical reaction between the mono and dioxalato complexes of Ti(IV) were determined from experiments in square wave voltammetry in the H+ range 0.5–1 M and in 0.03 M H+. It was concluded that in strong acid media the reaction must be: Ti ( OH ) 2 C 2 O 4 + C 2 O 4 2 - ⇄ Ti ( OH ) 2 ( C 2 O 4 ) 2 2 - . In 0.03 M H+, the nature of the mono oxalato complex changes and H+ is involved in the reaction of formation of Ti ( OH ) 2 ( C 2 O 4 ) 2 2 - .