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Issue 9, 2010
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An iron(ii) incomplete spin-crossover compound: pressure effects and Mössbauer spectroscopy study

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Abstract

A one-dimensional iron(II) spin-crossover compound [Fe(3py-im)2(NCS)2]·7H2O (1) (3py-im = 2,4,5-tris(4-pyridly)-imidazole) has been solvothermally synthesized and structurally characterized. Compound 1 crystallizes in the monoclinic space group P2/c with a = 11.9078(2), b = 9.9474(1), c = 17.7290(3) and β = 102.361(2)° at 105 K. Studies on the variable-temperature magnetic susceptibilities and Mössbauer spectra suggest that compound 1 undergoes incomplete spin transition behaviour. Pressure effects on the transition behaviour have also been investigated, the thermal-induced spin transition becomes more gradual and the critical temperature shifts towards slightly higher temperature range when external pressure increases. However, the spin transition can not be completed by applying external pressure even as high as 0.79 GPa.

Graphical abstract: An iron(ii) incomplete spin-crossover compound: pressure effects and Mössbauer spectroscopy study

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Article information


Submitted
25 Aug 2009
Accepted
09 Dec 2009
First published
14 Jan 2010

Dalton Trans., 2010,39, 2288-2292
Article type
Paper

An iron(II) incomplete spin-crossover compound: pressure effects and Mössbauer spectroscopy study

F. Yang, B. Li, T. Hanajima, Y. Einaga, R. Huang, L. Zheng and J. Tao, Dalton Trans., 2010, 39, 2288
DOI: 10.1039/B917518K

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