[Fe24Se26]: A Host-Guest Compound with Unique Fe-Se Topology

Valldor M, Boehme B, Prots Y, Borrmann H, Adler P, Schnelle W, Watier Y, Kuo CY, Pi TW, Hu Z, Felser C, Tjeng LH (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Chemistry - A European Journal Wiley

Book Volume: 22

Pages Range: 4626-4631

Journal Issue: 13

DOI: 10.1002/chem.201504840

Abstract

The novel host-guest compound [Cs6Cl][Fe24Se26] (I4/mmm; a=11.0991(9), c=22.143(2) Å) was obtained by reacting Cs2Se, 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 [Fe8Se6Se8/3] blocks that host a guest complex ion, [Cs6Cl]⁵⁺. Thus Fe is tetrahedrally coordinated and divalent with strong exchange couplings, which results in an ordered antiferromagnetic state below TN=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.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids

Germany (DE) European Synchrotron Radiation Facility (ESRF)

France (FR) National Synchrotron Radiation Research Center (NSRRC)

Taiwan (TW)

How to cite

APA:

Valldor, M., Boehme, B., Prots, Y., Borrmann, H., Adler, P., Schnelle, W.,... Tjeng, L.H. (2016). [Fe24Se26]: A Host-Guest Compound with Unique Fe-Se Topology. Chemistry - A European Journal, 22(13), 4626-4631. https://doi.org/10.1002/chem.201504840

MLA:

Valldor, Martin, et al. "[Fe24Se26]: A Host-Guest Compound with Unique Fe-Se Topology." Chemistry - A European Journal 22.13 (2016): 4626-4631.

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