Hydrothermal synthesis, structure and magnetic properties of a one-dimensional iron arsenate, â?? 1[NH 3(CH2)2NH(CH2)2NH 3][Fe2F4(HAsO4)2]

Chakrabarti, S., Pati, S.K., Green, M.A., Natarajan, S. (2004) Hydrothermal synthesis, structure and magnetic properties of a one-dimensional iron arsenate, â?? 1[NH 3(CH2)2NH(CH2)2NH 3][Fe2F4(HAsO4)2]. European Journal of Inorganic Chemistry, (19). pp. 3846-3851. ISSN 1434-1948. (doi:10.1002/ejic.200400127) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1002/ejic.200400127

Abstract

A novel one-dimensional iron arsenate, â?? 1[NH3(CH2)2NH-(CH2) 2NH3][Fe2F4(HAsO4) 2], built up exclusively from SBU-4 units (two octahedral units sharing an edge and connected through two tetrahedra) with Fe3+ ions in the high-spin state has been synthesized by hydrothermal methods. Structure elucidation reveals that the compound is a two-leg ladder with very weak antiferromagnetic exchanges along the chains. The magnetic susceptibility data show activated behaviour at T = 14 K, suggesting a finite spin gap between the nonmagnetic ground state and the excited triplet state. We have estimated the exchange parameters theoretically based on the S = 5/2 Majumdar-Ghosh model with frustrations and dimerisations. Although the magnetic gap is quite small, this is the first example, to the best of our knowledge, where the rungs with two S = 5/2 spins form strong singlet dimers. © Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.

Item Type: Article
DOI/Identification number: 10.1002/ejic.200400127
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Eur. J. Inorg. Chem. [Field not mapped to EPrints] AD - Framework Solids Laboratory, Chem. and Physics of Materials Unit, Jawaharlal Nehru Ctr. Adv. Sci. Res., Jakkur P. O., Bangalore 560064, India [Field not mapped to EPrints] AD - Theoretical Sciences Unit, Jawaharlal Nehru Ctr. Adv. Sci. Res., Jakkur P. O., Bangalore 560 064, India [Field not mapped to EPrints] AD - Davy-Faraday Research Laboratory, Royal Institution of Great Britain, 21 Albemarle Street, London, W2S 4BS, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Antiferromagnetism, Hydrothermal reactions, Iron, Iron arsenate, Magnetic properties, arsenate iron, arsenic acid derivative, iron, unclassified drug, antiferromagnetism, article, chemical reaction, chemical structure, dimerization, electron spin, electron spin gap, hydrothermal reaction, magnetism, Majumdar Ghosh model, model, quantum chemistry, synthesis
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 15:10 UTC
Last Modified: 29 May 2019 16:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51122 (The current URI for this page, for reference purposes)
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