Author/Authors :
Buschhaus، نويسنده , , C. and Dormann، نويسنده , , E. and Eichhorn، نويسنده , , K. and Hümmer، نويسنده , , K. and Moret، نويسنده , , R. and Ravy، نويسنده , , S.، نويسنده ,
Abstract :
The quasi-one dimensional conductors (PE)2X · 2/3THF (PE = perylene, X = PF6, AsF6;THF = tetrahydrofurane) and (PE)4 (SbF6)3 were studied by X-Ray scattering. For the PF6 and AsF6-salts the Peierls and two further structural transitions are characterized by fixed film-fixed crystal exposures. (PE)4(SbF6)3 shows modulated diffuse sheets of high intensity in reciprocal space. Perylene and anion molecules form parallel separated stacks. Due to weak correlation of neighbouring anion stacks a Peierls transition is prevented.
Keywords :
X-ray diffraction , Organic conductors based on radical cation salts , Metal-insulator phase transitions
