Rashid, S., Turner, S. S., Day, P., Light, M. E., Hursthouse, M. B. and Guionneau, P.
Novel charge transfer salts of BEDT-TTF with metal oxalate counterions
Synthetic Metals, 120, (1-3), . (doi:10.1016/S0379-6779(00)00856-0).
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The preparation, crystal structures and properties of three new BEDT-TTF, bis(ethylenedithio)tetrathiafulvalene, (ET for short), charge transfer salts beta " (ET)(4).[(H3O)Cr(C2O4)(3)].C6H5NO2 I, beta " (ET)(4).[(H3O)Fe(C2O4)(3)].C6H5NO2 II and (ET)(4). Fe-2(C2O4)(5)] III are reported. The structures of I and II consist of alternating layers of ET and an approximately hexagonal network formed by H3O+ and the metal with the solvent molecule, C6H5NO2, occupying hexagonal cavities in the anion layer. Both C6H5NO2 salts are superconducting, the iron salt having a T-c of 6.2 K and the chromium salt having a T-c of 5.8 K. The structure of(ET)(4)Fe-2(C2O4)(5)] consists of an iron oxalate bridged dimer, (Fe-Fe distance 5.472 Angstrom), interspersed with ET in a "checker board" arrangement. It is monoclinic and crystallises in the P2(1)/n space group. At 150 K a = 16.8068 (3) Angstrom, b = 10.9556 (2) Angstrom, c = 19.4109 (3) Angstrom, beta = 102.1593 (9) degrees and V = 3493.92 (10) Angstrom (3). Squid measurements show short range antiferromagnetic ordering.
|Digital Object Identifier (DOI):
||electrocrystallisation, magnetic measurements, transport measurements, organic superconductorsmolecular superconductor, physical-properties, crystal-structure, bis(ethylenedithio)tetrathiafulvalene, ions
|15 March 2001||Published|
||14 Feb 2006
||16 Apr 2017 23:01
|Further Information:||Google Scholar|
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