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Structures and Electrical Properties of Some New Organic Conductors Derived from the Donor Molecule TMET ( S , S , S , S ,‐Bis(dimethylethylenedithio) tetrathiafulvalene)
Author(s) -
Karrer Andreas,
Wallis John D.,
Dunitz Jack D.,
Hilti Bruno,
Mayer Carl W.,
Bürkle Markus,
Pfeiffer Jürgen
Publication year - 1987
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19870700405
Subject(s) - tetrathiafulvalene , chemistry , octahedron , electrical resistivity and conductivity , metal , crystallography , molecule , crystal structure , tetrahedron , semiconductor , electrical conductor , inorganic chemistry , organic chemistry , electrical engineering , engineering , physics , quantum mechanics
Crystal structures and electrical properties of radical‐cation salts of the chiral organic donor TMET ( S , S , S , S ,‐bis‐(dimethylethylenedithio)tetrathiafulvalene) are described. Two structural types, 2:1 with octahedral anions Pf − 6 , AsF − 6 , SbF − 6 , I − 3(incommensurate), and 3:2 with tetrahedral anions BF − 4 , CIO − 4 , ReO − 4 are observed. Resistivity measurements between 2 and 298 K indicate that the 3:2 types are organic metals, while the other compounds are semiconductors. (TMET) 3 (CIO 4 ) 2 is metallic down to about 120 K at ambient pressure and remains metallic down to 2 K at 8 kbar.