Vibrational spectra of two BEDT-TTF-based organic conductors: charge order

Andrzej Graja 1 , Iwona Olejniczak 1 , Bolesław Barszcz 1 , and John Schlueter 2
  • 1 Institute of Molecular Physics, Polish Academy of Sciences, 60-179, Poznań, Poland
  • 2 Materials Science Divisions, Argonne National Laboratory, Argonne, USA

Abstract

Infrared and Raman investigations of two phases of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) based organic conductors with the same CF3CF2SO3− anion: β′-(BEDT-TTF)2CF3CF2SO3 and δ′-(BEDT-TTF)2CF3CF2SO3, are shortly reviewed and compared with the most typical infrared properties of the family of (BEDT-TTF)2RR′SO3 organic conductors, where R = SF5, CF3, and R′ are CH2, CF2, CHF, CHFCF2, and CH2CF2. The role of the molecular structur and spatial organization of the counterions is discussed.

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