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Tuning the spin crossover above room temperature: Iron(II) complexes of substituted and deprotonated 2,6-bis(benzimidazol-2-yl)pyridine

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autorschaft

  • Roman Boča
  • Franz Renz
  • Miroslav Boča
  • Hartmut Fuess

Externe Organisationen

  • Slowakische Technische Universität Bratislava (STU)
  • University of SS Cyril and Methodius, Trnava
  • Johannes Gutenberg-Universität Mainz
  • Slovak Academy of Sciences
  • Technische Universität Darmstadt
  • Technische Universität Wien (TUW)

Details

OriginalspracheEnglisch
Seiten (von - bis)227-230
Seitenumfang4
FachzeitschriftInorganic chemistry communications
Jahrgang8
Ausgabenummer2
PublikationsstatusVeröffentlicht - Feb. 2005
Extern publiziertJa

Abstract

The complex [Fe(tzimpy) 2](ClO 4) 2 · 2H 2O (tzimpy = 2,4,6-tris-(benzimidazol-2-yl)pyridine) shows an abrupt spin crossover (S = 0-2 transition) above room temperature centered at T c = 323 K with a hysteresis width of ΔT = 35 K. The neutral iron(II) complex with deprotonated bzimpy ligands (bzimpy = 2,6- bis(benzimidazol-2-yl)pyridine) exhibits a gradual spin transition on the first heating with T c = 424 K. There are irreversible changes between T = 503 and 523 K: the liberation of the crystal water, the color change (blue-green) followed by a structure change. Next thermal cycles are reproducible though, heating/cooling paths are different from the first heating.

ASJC Scopus Sachgebiete

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Tuning the spin crossover above room temperature: Iron(II) complexes of substituted and deprotonated 2,6-bis(benzimidazol-2-yl)pyridine. / Boča, Roman; Renz, Franz; Boča, Miroslav et al.
in: Inorganic chemistry communications, Jahrgang 8, Nr. 2, 02.2005, S. 227-230.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Boča R, Renz F, Boča M, Fuess H, Haase W, Kickelbick G et al. Tuning the spin crossover above room temperature: Iron(II) complexes of substituted and deprotonated 2,6-bis(benzimidazol-2-yl)pyridine. Inorganic chemistry communications. 2005 Feb;8(2):227-230. doi: 10.1016/j.inoche.2004.12.014
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abstract = "The complex [Fe(tzimpy) 2](ClO 4) 2 · 2H 2O (tzimpy = 2,4,6-tris-(benzimidazol-2-yl)pyridine) shows an abrupt spin crossover (S = 0-2 transition) above room temperature centered at T c = 323 K with a hysteresis width of ΔT = 35 K. The neutral iron(II) complex with deprotonated bzimpy ligands (bzimpy = 2,6- bis(benzimidazol-2-yl)pyridine) exhibits a gradual spin transition on the first heating with T c = 424 K. There are irreversible changes between T = 503 and 523 K: the liberation of the crystal water, the color change (blue-green) followed by a structure change. Next thermal cycles are reproducible though, heating/cooling paths are different from the first heating.",
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Download

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T1 - Tuning the spin crossover above room temperature

T2 - Iron(II) complexes of substituted and deprotonated 2,6-bis(benzimidazol-2-yl)pyridine

AU - Boča, Roman

AU - Renz, Franz

AU - Boča, Miroslav

AU - Fuess, Hartmut

AU - Haase, Wolfgang

AU - Kickelbick, Guido

AU - Linert, Wolfgang

AU - Vrbová-Schikora, Martina

PY - 2005/2

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N2 - The complex [Fe(tzimpy) 2](ClO 4) 2 · 2H 2O (tzimpy = 2,4,6-tris-(benzimidazol-2-yl)pyridine) shows an abrupt spin crossover (S = 0-2 transition) above room temperature centered at T c = 323 K with a hysteresis width of ΔT = 35 K. The neutral iron(II) complex with deprotonated bzimpy ligands (bzimpy = 2,6- bis(benzimidazol-2-yl)pyridine) exhibits a gradual spin transition on the first heating with T c = 424 K. There are irreversible changes between T = 503 and 523 K: the liberation of the crystal water, the color change (blue-green) followed by a structure change. Next thermal cycles are reproducible though, heating/cooling paths are different from the first heating.

AB - The complex [Fe(tzimpy) 2](ClO 4) 2 · 2H 2O (tzimpy = 2,4,6-tris-(benzimidazol-2-yl)pyridine) shows an abrupt spin crossover (S = 0-2 transition) above room temperature centered at T c = 323 K with a hysteresis width of ΔT = 35 K. The neutral iron(II) complex with deprotonated bzimpy ligands (bzimpy = 2,6- bis(benzimidazol-2-yl)pyridine) exhibits a gradual spin transition on the first heating with T c = 424 K. There are irreversible changes between T = 503 and 523 K: the liberation of the crystal water, the color change (blue-green) followed by a structure change. Next thermal cycles are reproducible though, heating/cooling paths are different from the first heating.

KW - Cooperativeness

KW - Iron(II) complexes

KW - Magnetism

KW - Spin crossover

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U2 - 10.1016/j.inoche.2004.12.014

DO - 10.1016/j.inoche.2004.12.014

M3 - Article

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EP - 230

JO - Inorganic chemistry communications

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