Complete spin crossover in the [Fe(pybzim)3](ClO4)2 · H2O complex

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

Autoren

  • L. Dlháň
  • W. Linert
  • F. Renz
  • R. Boča

Organisationseinheiten

Externe Organisationen

  • Slowakische Technische Universität Bratislava (STU)
  • Technische Universität Wien (TUW)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)332-338
Seitenumfang7
FachzeitschriftChemical papers
Jahrgang51
Ausgabenummer6
PublikationsstatusVeröffentlicht - 1997

Abstract

The magnetic properties of a hexacoordinated Fe(II) complex with the bidentate ligand 2-(2-pyridyl)benzimidazole (pybzim) - [Fe(pybzim)3](ClO4)2 · H2O have been investigated by AC susceptometer measurements. The temperature dependence of the AC magnetic susceptibility for a powder sample showed essentially diamagnetic behaviour below 85 K and paramagnetism (μeff/μB = 4.5-5.3, S = 2) above 160 K, obeying the Curie - Weiss law. Spin crossover behaviour can be found within the temperature range of 90 to 160 K; it is centred at 141 K. The complex is ESR silent in X-band mode: neither the powder sample (77 K and 300 K) nor a methanol solution exhibit an ESR signal. The spin-crossover transition of a freshly prepared powder sample is complete. However, time evolution causes (within months) an increasing admixture of iron(III), which was proved by magnetic susceptibility measurement, ESR, and electron spectra of the complex.

ASJC Scopus Sachgebiete

Zitieren

Complete spin crossover in the [Fe(pybzim)3](ClO4)2 · H2O complex. / Dlháň, L.; Linert, W.; Renz, F. et al.
in: Chemical papers, Jahrgang 51, Nr. 6, 1997, S. 332-338.

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

Dlháň, L, Linert, W, Renz, F & Boča, R 1997, 'Complete spin crossover in the [Fe(pybzim)3](ClO4)2 · H2O complex', Chemical papers, Jg. 51, Nr. 6, S. 332-338.
Dlháň, L., Linert, W., Renz, F., & Boča, R. (1997). Complete spin crossover in the [Fe(pybzim)3](ClO4)2 · H2O complex. Chemical papers, 51(6), 332-338.
Dlháň L, Linert W, Renz F, Boča R. Complete spin crossover in the [Fe(pybzim)3](ClO4)2 · H2O complex. Chemical papers. 1997;51(6):332-338.
Dlháň, L. ; Linert, W. ; Renz, F. et al. / Complete spin crossover in the [Fe(pybzim)3](ClO4)2 · H2O complex. in: Chemical papers. 1997 ; Jahrgang 51, Nr. 6. S. 332-338.
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abstract = "The magnetic properties of a hexacoordinated Fe(II) complex with the bidentate ligand 2-(2-pyridyl)benzimidazole (pybzim) - [Fe(pybzim)3](ClO4)2 · H2O have been investigated by AC susceptometer measurements. The temperature dependence of the AC magnetic susceptibility for a powder sample showed essentially diamagnetic behaviour below 85 K and paramagnetism (μeff/μB = 4.5-5.3, S = 2) above 160 K, obeying the Curie - Weiss law. Spin crossover behaviour can be found within the temperature range of 90 to 160 K; it is centred at 141 K. The complex is ESR silent in X-band mode: neither the powder sample (77 K and 300 K) nor a methanol solution exhibit an ESR signal. The spin-crossover transition of a freshly prepared powder sample is complete. However, time evolution causes (within months) an increasing admixture of iron(III), which was proved by magnetic susceptibility measurement, ESR, and electron spectra of the complex.",
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T1 - Complete spin crossover in the [Fe(pybzim)3](ClO4)2 · H2O complex

AU - Dlháň, L.

AU - Linert, W.

AU - Renz, F.

AU - Boča, R.

PY - 1997

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N2 - The magnetic properties of a hexacoordinated Fe(II) complex with the bidentate ligand 2-(2-pyridyl)benzimidazole (pybzim) - [Fe(pybzim)3](ClO4)2 · H2O have been investigated by AC susceptometer measurements. The temperature dependence of the AC magnetic susceptibility for a powder sample showed essentially diamagnetic behaviour below 85 K and paramagnetism (μeff/μB = 4.5-5.3, S = 2) above 160 K, obeying the Curie - Weiss law. Spin crossover behaviour can be found within the temperature range of 90 to 160 K; it is centred at 141 K. The complex is ESR silent in X-band mode: neither the powder sample (77 K and 300 K) nor a methanol solution exhibit an ESR signal. The spin-crossover transition of a freshly prepared powder sample is complete. However, time evolution causes (within months) an increasing admixture of iron(III), which was proved by magnetic susceptibility measurement, ESR, and electron spectra of the complex.

AB - The magnetic properties of a hexacoordinated Fe(II) complex with the bidentate ligand 2-(2-pyridyl)benzimidazole (pybzim) - [Fe(pybzim)3](ClO4)2 · H2O have been investigated by AC susceptometer measurements. The temperature dependence of the AC magnetic susceptibility for a powder sample showed essentially diamagnetic behaviour below 85 K and paramagnetism (μeff/μB = 4.5-5.3, S = 2) above 160 K, obeying the Curie - Weiss law. Spin crossover behaviour can be found within the temperature range of 90 to 160 K; it is centred at 141 K. The complex is ESR silent in X-band mode: neither the powder sample (77 K and 300 K) nor a methanol solution exhibit an ESR signal. The spin-crossover transition of a freshly prepared powder sample is complete. However, time evolution causes (within months) an increasing admixture of iron(III), which was proved by magnetic susceptibility measurement, ESR, and electron spectra of the complex.

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