MOLECULAR-METALS BASED ON BETS AND MAGNETIC ANIONS - LAMBDA-BETS(2)FECL(4) AND KAPPA-BETS(2)FECL(4) AND THETA-BETS(4)CU(2)CL(6)

Authors
KOBAYASHI H KOBAYASHI A NAITO T TOKUMOTO M BROSSARD L KUSHCH N CASSOUX P
Citation
H. Kobayashi et al., MOLECULAR-METALS BASED ON BETS AND MAGNETIC ANIONS - LAMBDA-BETS(2)FECL(4) AND KAPPA-BETS(2)FECL(4) AND THETA-BETS(4)CU(2)CL(6), Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 285, 1996, pp. 11-18
Citations number
24
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
285
Year of publication
1996
Pages
11 - 18
Database
ISI
SICI code
1058-725X(1996)285:<11:MBOBAM>2.0.ZU;2-O
Abstract
Novel electric, magnetic and structural properties of molecular metals based on BETS (=Bis(ethylenedithio)tetraselenafulvalene) molecules an d magnetic anions such as FeCl4- and Cu2Cl62- were reported. BETS(2)Fe Cl(4) has two modifications (kappa and lambda). Unlike kappa-BETS(2)Fe Cl(4) with stable metallic state down to 2 K, lambda-BETS(2)FeCl(4) ex hibited a cooperative electric (metal-insulator) and magnetic (paramag netic-antiferromagnetic) transition at 8 K. BETS(4)Cu(2)Cl(6) with the ta-type arrangement of BETS molecules is metallic down to 4 K. Two Cu2 + ions are bridged by two Cl atoms to form binuclear magnetic anion Cu 2Cl62-. The Crystal structure and the temperature dependence of the ma gnetic susceptibility were briefly described.