Kinetics of complex formation of Fe(III) with syringic acid: Experimental and theoretical study

Add time:07/19/2019    Source:sciencedirect.com

Kinetic study on the complexation of syringic acid with Fe(III) was described in aqueous solution at pH 9.0 together with a reappraisal of spectral evidence for chelate formation. The complexation reaction was found to be a first-order with rate constants for k1 (formation) 3.67 × 10−2 min−1. Additionally, the effect of concentration and temperature on the complexation reaction was investigated. The gustatory properties of the isolated complex were investigated and complex showed no metallic taste. The isolated complex was stable at pH 9.0. The apparent activation energy of the complexation reaction was evaluated to be 168 kcal/mol.The total iron content was determined in the isolated complex by AAS technique and was found 0.0073/100 ml. The specific rotation of the complex was found at −85°.

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