Kinetics of the photoaquation of Hexacyanoferrate(II) ion

V. Gáspár, Mihály T. Beck

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Abstract

Kinetics of the photoaquation of hexacyanoferrate(II) ion in aqueous solution were studied potentiometrically and spectrophotometrically. Supposing the simplest mechanism (see Fig. 3. in text), the photoaquation in alkaline medium can be well described. The value of the constants at pH = ll.0 are: ø = 0.8-1.0, k6 = (3.0 ± 0.5) × 10-8 s-1 and k-6 = 1.5 ± 0.2 mol-1 dm3 s-1. To describe the photoaquation in neutral medium t was extended (k′ = 3.33 x 102 mol-1 dm3s-1). The quantum yield in acidic medium can be calculated by combination of ø values of different protonated complexes. The reversibility of photoaquation in alkaline medium is also explained by the scheme.

Original languageEnglish
Pages (from-to)387-391
Number of pages5
JournalPolyhedron
Volume2
Issue number5
DOIs
Publication statusPublished - 1983

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Quantum yield
Ions
Kinetics
kinetics
ions
aqueous solutions
hexacyanoferrate II

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Kinetics of the photoaquation of Hexacyanoferrate(II) ion. / Gáspár, V.; Beck, Mihály T.

In: Polyhedron, Vol. 2, No. 5, 1983, p. 387-391.

Research output: Contribution to journalArticle

Gáspár, V. ; Beck, Mihály T. / Kinetics of the photoaquation of Hexacyanoferrate(II) ion. In: Polyhedron. 1983 ; Vol. 2, No. 5. pp. 387-391.
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abstract = "Kinetics of the photoaquation of hexacyanoferrate(II) ion in aqueous solution were studied potentiometrically and spectrophotometrically. Supposing the simplest mechanism (see Fig. 3. in text), the photoaquation in alkaline medium can be well described. The value of the constants at pH = ll.0 are: {\o} = 0.8-1.0, k6 = (3.0 ± 0.5) × 10-8 s-1 and k-6 = 1.5 ± 0.2 mol-1 dm3 s-1. To describe the photoaquation in neutral medium t was extended (k′ = 3.33 x 102 mol-1 dm3s-1). The quantum yield in acidic medium can be calculated by combination of {\o} values of different protonated complexes. The reversibility of photoaquation in alkaline medium is also explained by the scheme.",
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