A fourth polymorph in the family of BEDT-TTF salts with thiocyanatocuprate(I) anions: (BEDT-TTF){<_4}Cu{<_3}(NCS){<_5}.
- Materials Science Division
A new crystallographic modification was found in the family of BEDT-TTF salts containing thiocyanatocuprate(I) anions. The cation radical salt crystallizes in the P{sup {bar 1}} space group with a = 8.2720(9) {angstrom}, b = 19.099(2) {angstrom}, c = 43.758(5) {angstrom}, {alpha} = 81.088(4){sup o}, {beta} = 87.253(4){sup o}, {gamma} = 83.790(4){sup o}, V = 6786.2(13) {angstrom}{sup 3} at 150 K. The BEDT-TTF radical cations pack in an {alpha}-type motif, but every four columns, there is a slip in the layer. Where this slip occurs, the stacks are coupled in a {beta}'' manner. The material exhibits semiconductive behavior with an activation energy of 0.13 eV above 250 K and 0.22 eV below. Packing motif of the (BEDT-TTF){sub 4}Cu{sub 3}(NCS){sub 5} structure.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1039869
- Report Number(s):
- ANL/MSD/JA-71362; PSSBBD; TRN: US201210%%95
- Journal Information:
- Physica Status Solidi B (Basic Research), Vol. 249, Issue 5; ISSN 0370-1972
- Country of Publication:
- United States
- Language:
- ENGLISH
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