Novel charge transfer salts of BEDT-TTF with metal oxalate counterions
Rashid, S., Turner, S. S., Day, P., Light, M. E., Hursthouse, M. B. and Guionneau, P. (2001) Novel charge transfer salts of BEDT-TTF with metal oxalate counterions. Synthetic Metals, 120, (1-3), 985-986. (doi:10.1016/S0379-6779(00)00856-0).
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Description/Abstract
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.
| Item Type: | Article |
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| Related URLs: | |
| Keywords: | electrocrystallisation, magnetic measurements, transport measurements, organic superconductorsmolecular superconductor, physical-properties, crystal-structure, bis(ethylenedithio)tetrathiafulvalene, ions |
| Subjects: | Q Science Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| Item ID: | 19607 |
| Date Deposited: | 14 Feb 2006 |
| Last Modified: | 01 Jun 2011 16:09 |
| Contributors: | Rashid, S. (Author) Turner, S. S. (Author) Day, P. (Author) Light, M. E. (Author) Hursthouse, M. B. (Author) Guionneau, P. (Author) |
| Date: | 15 March 2001 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/19607 |
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