Kinetics of the Aquation of Iron(III) Monophenolate Complexes; Absence of the Acid-dependent Path

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概要

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• The complex formation between Fe(III) and 10 kinds of phenols was investigated using a stopped-flow apparatus. It was confirmed that the reaction rate is acid-independent in the acid region 0.01–1.0 M. A mechanism for the aquation of the iron (III)-phenol complex is proposed in which a proton transfers intramolecularly from a co-ordinated water molecule to a phenolate ion, <I>viz.</I>, Fe(OH<SUB>2</SUB>)<SUB>5</SUB>A<SUP>2+</SUP>→Fe(OH<SUB>2</SUB>)<SUB>4</SUB>(OH)·AH<SUP>2+</SUP>. From the observed isotope effects it was concluded that the state of a proton of HA in Fe(OH<SUB>2</SUB>)<SUB>4</SUB>(OH)·AH<SUP>2+</SUP> differs from that in a free phenol.

• 公益社団法人 日本化学会の論文

著者

• Yamagishi Akihiko

  Department Of Chemistry College Of Arts And Sciences The University Of Tokyo

• FUJIMOTO Masatoshi

  Department of Chemistry, Faculty of Science, Hokkaido University

• Nakamura Koichi

  Department of Chemistry, Faculty of Science, Hokkaido University

• Tsuchida Toshihiko

  Department of Chemistry, Faculty of Science, Hokkaido University

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