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

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

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)443-447
Number of pages5
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume255
Issue number3
DOIs
Publication statusPublished - Mar 1 2003

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Hysteresis loops
Hysteresis
Iron
Hot Temperature
Thermogravimetric analysis
Magnetic properties
Molecules
quinoline

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

Cite this

Iron(III) spin transition compound with a large thermal hysteresis. / Hayami, S.; Kawahara, T.; Juhász, G.; Kawamura, K.; Uehashi, K.; Sato, Osamu; Maeda, Y.

In: Journal of Radioanalytical and Nuclear Chemistry, Vol. 255, No. 3, 01.03.2003, p. 443-447.

Research output: Contribution to journalArticle

Hayami, S, Kawahara, T, Juhász, G, Kawamura, K, Uehashi, K, Sato, O & Maeda, Y 2003, 'Iron(III) spin transition compound with a large thermal hysteresis', Journal of Radioanalytical and Nuclear Chemistry, vol. 255, no. 3, pp. 443-447. https://doi.org/10.1023/A:1022503609539
Hayami, S. ; Kawahara, T. ; Juhász, G. ; Kawamura, K. ; Uehashi, K. ; Sato, Osamu ; Maeda, Y. / Iron(III) spin transition compound with a large thermal hysteresis. In: Journal of Radioanalytical and Nuclear Chemistry. 2003 ; Vol. 255, No. 3. pp. 443-447.
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AU - Sato, Osamu

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