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Direct Observation of Bonding and Charge Ordering in (EDO-TTF)2PF6

Authors


  • We thank Dr. E. Nishibori for his help in the MEM/Rietveld analyses. The synchrotron radiation experiments were performed at SPring-8 BL02B2 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI). This work was partly supported by Grants-in-Aid for scientific research and for the 21st century COE program of Kyoto University Alliance for Chemistry from the Ministry of Education, Culture, Sports, Science and Technology of Japan. This work was also supported by the Showa Shell Environmental Research Foundation.

Abstract

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Dimere aus flachen (EDO-TTF)+-Molekülen, getrennt durch gebogene neutrale EDO-TTF-Moleküle (EDO-TTF=Ethylendioxytetrathiafulvalen), finden sich in der Struktur der Isolatorphase von (EDO-TTF)2PF6 (siehe Bild), nicht jedoch in der der metallischen Phase. Die Kooperativität von Peierls-Verzerrung, Ladungs- und Anionenanordnung bei diesem Metall-Isolator-Übergang kann als Ergebnis einer Molekülverschiebung verstanden werden.

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