Structures and physical properties of cation radical salts based on low-symmetrical ethylenedioxy-ethylenedithio-TTF

Y. Yoshida; M. Maesato; H. Yamochi; G. Saito

doi:doi:10.1051/jp4:2004114142

Numéro		J. Phys. IV France Volume 114, April 2004


Page(s)		595 - 597
DOI		https://doi.org/10.1051/jp4:2004114142

J. Phys. IV France 114 (2004) 595
DOI: 10.1051/jp4:2004114142

Structures and physical properties of cation radical salts based on low-symmetrical ethylenedioxy-ethylenedithio-TTF

Y. Yoshida, M. Maesato, H. Yamochi and G. Saito

Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan

Abstract
Crystal structures and physical properties have been investigated for two cation radical salts formed with EOET, which is a hybrid molecule between ET and BO. The Mott-insulating $\kappa '$ -(EOET) ₂Cu[ N(CN) ₂] Br salt has a spin-singlet ground state, while the $\kappa$ -(EOET) ₂GaCl ₄ salt with a triangular lattice composed of EOET dimers shows a metal-insulator transition at around 40 K. Key words. EOET - , crystal - structure, electron paramagnetic resonance, - metal-insulator transition.