Kinetics of the dissociation of tris(1,10-phenanthroline) iron(III) complex ion in aqueous acid solutions. A mechanistic model for product specificity |
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Authors: | Kambhampati Sriramam Brahmandam S R Sarma Konidena Kalidas Janapati Sreelakshmi Chintalapudi Ramakrishna |
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Institution: | (1) Department of Chemistry, Nagarjuna University, 522510 Nagarjunanagar, India |
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Abstract: | Summary The natural decay of Fe(phen)
f3
p3+
, where no CeIV is employed for scavenging the side reaction product, Fe(phen)
f3
p2+
, is now treated as a complex reaction involving two parallel processes, and the experimental kinetics are consistent with the rate laws derived from a mechanism that simultaneously explains the composition of the products as a function of acidity. In terms of the proposed mechanism the dissociation rate of the complex ion in acid solutions containing CeIV as scavenging agent is to be regarded as a CeIV retarded aquation rate, and OH– is to be assigned a catalytic role in the kinetics of basic reduction. |
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