TTF based charge transfer salts of M(NCS)(4)(C9H7N)(2) (-) where M = Cr, Fe and C9H7N = isoquinoline; observation of bulk ferrimagnetic order


Turner, S. S., Michaut, C., Durot, S., Day, P., Gelbrich, T. and Hursthouse, M. B. (2000) TTF based charge transfer salts of M(NCS)(4)(C9H7N)(2) (-) where M = Cr, Fe and C9H7N = isoquinoline; observation of bulk ferrimagnetic order. Journal of the Chemical Society, Dalton Transactions, (6), 905-909. (doi: 10.1039/a910259k).

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Description/Abstract

Three new charge transfer salts of BEDT-TTF and TTF with the counter ions [M(NCS)(4)(C9H7N)(2)](-) (M = Cr, Fe; C9H7N = isoquinoline) are described. The materials are prepared by standard electrocrystallisation techniques. The nature of the anion is verified in the crystal structure of the salt [C9H8N][Cr(NCS)(4)(C9H7N)]. C12H24O6. H2O which is used as the electrolyte when M = Cr. All of the charge transfer salts display long range ferrimagnetic order originating from the interaction between M (S = 3/2 or S = 5/2) and the donor (S = 1/2). The measured critical temperatures are 4.2 K (BEDT-TTF, M = Cr), 4.5 K (BEDT-TTF, M = Fe) and 8.9 K (TTF, M = Cr). Each of the compounds also shows a modest magnetic hysteresis of 338, 18 and 75 Oe for BEDT-TTF salts of M = Cr, Fe and the TTF salt of Cr, respectively.

Item Type: Article
Related URLs:
Keywords: molecular superconductor, anions, ions
Subjects: Q Science
Q Science > QD Chemistry
Divisions: University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 18846
Date Deposited: 20 Dec 2005
Last Modified: 27 Mar 2014 18:08
URI: http://eprints.soton.ac.uk/id/eprint/18846

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