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Kinetics and mechanism of electron‐transfer reaction of aquothallium(III) and coordinated thallium(III). Oxidation of metol with thallium(III) in acid perchlorate medium
Author(s) -
Nahar Sharmila,
Sharma P. D.
Publication year - 1994
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.610070303
Subject(s) - chemistry , thallium , perchloric acid , perchlorate , kinetics , reaction rate constant , stoichiometry , inorganic chemistry , electron transfer , rate equation , nuclear chemistry , organic chemistry , ion , physics , quantum mechanics
The kinetics of oxidation of metol ( N ‐methyl‐ p ‐aminophenol) by thallium(III) have been studied in a perchloric acid medium. This organic compound is employed extensively in photographic work. The stoichiometry of the reaction is represented by: C 6 H 4 (OH)NHCH 3 + TI III → C 6 H 4 (O)NCH 3 + TI I + 2H + The kinetics indicate the rate law:\documentclass{article}\pagestyle{empty}\begin{document}$$k' = \frac{{Kk\left[{metal} \right]}}{{1 + K\left[{metal} \right]}}$$\end{document}where k ′ is the pseudo‐first‐order rate constant. The rate constants and thermodynamic parameters for the rate‐limiting step have been evaluated.