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Issue 4, 2018
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Donor–anion interactions in quarter-filled low-dimensional organic conductors

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Abstract

Anions have often been considered to act essentially as electron donors or acceptors in molecular conductors. However there is now growing evidence that they play an essential role in directing the structural and hence electronic properties of many of these systems. After reviewing the basic interactions and different ground states occurring in molecular conductors we consider in detail how anions influence the structure of donor stacks and often guide them toward different types of transitions. Consideration of the Bechgaard and Fabre salts illustrates how anions play a crucial role in directing these salts through complex phase diagrams where different conducting and localized states are in competition. We also emphasize the important role of hydrogen bonding and conformational flexibility of donors related to BEDT-TTF and we discuss how anions have frequently a strong control of the electronic landscape of these materials. Charge ordering, metal to metal and metal to insulator transitions occurring in these salts are considered.

Graphical abstract: Donor–anion interactions in quarter-filled low-dimensional organic conductors

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Publication details

The article was received on 10 Apr 2018, accepted on 07 Jun 2018 and first published on 07 Jun 2018


Article type: Review Article
DOI: 10.1039/C8MH00423D
Citation: Mater. Horiz., 2018,5, 590-640
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    Donor–anion interactions in quarter-filled low-dimensional organic conductors

    J. Pouget, P. Alemany and E. Canadell, Mater. Horiz., 2018, 5, 590
    DOI: 10.1039/C8MH00423D

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