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Comptes Rendus Chimie
Volume 8, n° 6-7
pages 1017-1023 (juin-juillet 2005)
Doi : 10.1016/j.crci.2004.11.025
Received : 23 July 2004 ;  accepted : 25 November 2004
Caractérisation structurale et étude spectroscopique du transfert de charge pour deux phases polymorphes du complexe (TTF)3 (TNF)2 , avec TTF=tétrathiofulvalène et TNF=2,4,7-trinitro-9-fluorénone
 

Amparo Salmerón-Valverde, Sylvain Bernès
Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, A.P. 1613, Puebla, Puebla, México 

*Auteur correspondant.

Contribution dédiée au Professeur Francis Sécheresse, à l'occasion de ses 60 ans

Résumé

Deux phases polymorphes, et β , pour le complexe à transfert de charge (TTF)3 (TNF)2 , où TTF=tétrathiofulvalène et TNF=2,4,7-trinitro-9-fluorénone, ont été caractérisées par diffraction des rayons X et spectroscopie infrarouge. Un changement structural de la TNF conduit à des structures d'empilement distinctes. Une estimation du degré de transfert de charge établit que δβ >δ 0, ce qui est en accord avec les structures cristallines. Pour citer cet article : A. Salmerón-Valverde, S. Bernès, C. R. Chimie 8 (2005).

The full text of this article is available in PDF format.
Abstract

Structural characterization and spectroscopic study of charge transfer of two polymorphs of complex (TTF)3 (TNF)2 , where TTF=tetrathiafulvalene and TNF=2,4,7-trinitro-9-fluorenone. Two polymorphs, and β , for the charge-transfer complex (TTF)3 (TNF)2 , with TTF=tetrathiafulvalene and TNF=2,4,7-trinitro-9-fluorenone, have been characterized by X-ray diffraction and infrared spectroscopy. A structural modification of the TNF moiety allows different packing structures. An estimation of the degree of charge transfer establishes that δβ >δ ≈0, a feature consistent with crystalline structures. To cite this article: A. Salmerón-Valverde, S. Bernès, C. R. Chimie 8 (2005).

The full text of this article is available in PDF format.

Mots clés : Polymorphisme, Transfert de charge, Tétrathiofulvalène, Fluorénone, Structure cristalline

Keywords : Polymorphism, Charge-transfer, Tetrathiafulvalene, Fluorenone, Crystal structure




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