Influence of the intermolecular interaction on photo-induced spin-transition of [Fe(R-pap)2]X

S. Hayami, T. Kawahara, Y. Maeda, K. Inoue, Osamu Sato

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Iron(III) spin-crossover complexes [Fe(pap)2]ClO 4·H2O (1), [Fe(pap)2]BF 4·H2O (2), [Fe(pap)2]PF 6·CH3OH (3), [Fe(CH3-pap) 2]ClO4·H2O (4), [Fe0.5Al 0.5(pap)2]ClO4·CH3OH (5) and [Fe0.25Al0.75(pap)2] ClO4· CH3OH (6) were prepared and the spin transition behaviors of the complexes have been studied from magnetic susceptibility and Mössbauer spectroscopy measurements. The magnetic properties of light-induced metastable state are measured using Hg-Xe light source. T1/2 is temperature at which the populations of the high-spin and low-spin species are fifty-fifty. Metastable HS is produced by light irradiation at 5 K. T(LIESST) is the temperature at which the populations of the metastable high-spin species decrease to one half and cooperativity factor C is defined as the parameter which presents the strength of cooperativity. The value of T(LIESST) decreases as T1/2 increases and the plots of T(LIESST) vs. C show linear correlation. The effect of cooperativity of the complexes on the relaxations in solid was confirmed for the iron(III) complexes.

Original languageEnglish
Pages (from-to)521-525
Number of pages5
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume266
Issue number3
DOIs
Publication statusPublished - Nov 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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