Iron(III) spin transition compound with a large thermal hysteresis

S. Hayami, T. Kawahara, G. Juhász, K. Kawamura, K. Uehashi, O. Sato, Y. Maeda

研究成果: ジャーナルへの寄稿学術誌査読

26 被引用数 (Scopus)

抄録

The magnetic properties of the spin-crossover compound, [Fe(qsal) 2 ]NCSe·2DMSO (N-(8-quinolyl)-salicyladimine) (1), have been measured. We have discovered that the compound 1 exhibits a wide "thermal hysteresis loop" of 115 K (T 1/2 ↑ = 324 K and T 1/2 ↓ = 209 K) in the first cycle. Thermogravimetric analysis shows that solvent molecules of the compound 1 are removed at around 324 K. This means that the hysteresis loop observed for the first cycle is only an apparent one. Following the first loop, the compound 1 shows a spin-crossover in warming mode. The spin transition occurs at T 1/2 ↑ = 285 K and T 1/2 ↓ = 209 K and the hysteresis width can be estimated to be 76 K, which is one of the largest values reported so far for spin-crossover compounds. It is thought that the cooperativity produced in the compound mainly arises from the intermolecular π interactions between the quinoline and the phenyl rings.

本文言語英語
ページ(範囲)443-447
ページ数5
ジャーナルJournal of Radioanalytical and Nuclear Chemistry
255
3
DOI
出版ステータス出版済み - 3月 1 2003
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 分析化学
  • 原子力エネルギーおよび原子力工学
  • 放射線学、核医学およびイメージング
  • 汚染
  • 分光学
  • 公衆衛生学、環境および労働衛生
  • 健康、毒物学および変異誘発

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