57Fe Mössbauer spectroscopy on the cyclic spin-cluster Fe6(tea)6(CH3OH)6

Author： Kreitlow J.   Litterst J.   Süllow S.   Pilawa B.  

Publisher： Springer Publishing Company

ISSN： 0304-3843

Source： Hyperfine Interactions, Vol.168, Iss.1-3, 2006-02, pp. : 1197-1200

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Abstract

We present 57Fe Mössbauer spectroscopy experiments on the cyclic spin-cluster Fe6(tea)6(CH3OH)6 (tea = triethanolaminato(-3)). In former studies, the spin cluster has been treated as a homogenous, quasi-one-dimensional spin S=5/2 Heisenberg antiferromagnet. Our experiments reveal spectra, which consists of two different quadrupolar doublets. In consequence, there are two different Fe sites among the hexanuclear iron spin-cluster.

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