Mechanistic Difference of the Iron(III) Ion Complexation in Different Solvents

Koji Ishihara, Shigenobu Funahashi, Motoharu Tanaka*

*この研究の対応する著者

研究成果: Article査読

30 被引用数 (Scopus)

抄録

The activation volumes (ΔK) for the complexation of the iron(III) ion with acetohydroxamic acid, 4-isopropyltropolone, and thiocyanate ion in N,N-dimethylformamide (DMF) and dimethyl sulfoxide (Me2SO) were determined by a high-pressure stopped-flow technique. Values of ΔV) for the formation of the (acetohydroxamato)iron(III) and (isopropyltropolonato)iron(III) complexes are -0.8 ± 0.2 and 5.0 ± 0.4 cm3 mol-1, respectively, in DMF and 3.0 ± 0.3 and 10.9 ± 1.7 cm3 mol-1 in Me2SO, respectively. For the formation and dissociation of the 1:1 (isothiocyanato)iron(III) complex in Me2SO, the ΔV+ values are 3.3 ± 0.6 and -8.5 ± 1.4 cm3 mol-1, respectively. The change in the sign of ΔV) is interpreted on the basis of relative bulkiness of both the entering ligand and the coordinated solvent molecule.

本文言語English
ページ(範囲)3589-3592
ページ数4
ジャーナルInorganic Chemistry
22
24
DOI
出版ステータスPublished - 1983 11
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 無機化学

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