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