paper

Pressure-induced structural phase transition in the Bechgaard-Fabre salts

arXiv:0905.4626 · doi:10.1016/j.synthmet.2009.07.039

Abstract

The crystal structures of the quasi-one-dimensional organic salts (TMTTF) $_{2}$ PF $_{6}$ and (TMTSF) $_{2}$ PF $_{6}$ were studied by pressure-dependent x-ray diffraction up to 10 GPa at room temperature. The unit-cell parameters exhibit a clear anomaly due to a structural phase transition at 8.5 and 5.5 GPa for (TMTTF) $_{2}$ PF $_{6}$ and (TMTSF) $_{2}$ PF $_{6}$ , respectively.