In:
Chemistry – A European Journal, Wiley, Vol. 22, No. 13 ( 2016-03-18), p. 4626-4631
Abstract:
The novel host–guest compound [Cs 6 Cl][Fe 24 Se 26 ] ( I 4/ mmm ; a =11.0991(9), c =22.143(2) Å) was obtained by reacting Cs 2 Se, CsCl, Fe, and Se in closed ampoules. This is the first member of a family of compounds with unique Fe–Se topology, which consists of edge‐sharing, extended fused cubane [Fe 8 Se 6 Se 8/3 ] blocks that host a guest complex ion, [Cs 6 Cl] 5+ . Thus Fe is tetrahedrally coordinated and divalent with strong exchange couplings, which results in an ordered antiferromagnetic state below T N =221 K. At low temperatures, a distribution of hyperfine fields in the Mössbauer spectra suggests a structural distortion or a complex spin structure. With its strong Fe–Se covalency, the compound is close to electronic itinerancy and is, therefore, prone to exhibit tunable properties.
Type of Medium:
Online Resource
ISSN:
0947-6539
,
1521-3765
DOI:
10.1002/chem.201504840
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
1478547-X
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