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Title: BEDT-TFF salts with fluorinated sulfonate anions.

Abstract

A number of layered conducting BEDT-TTF, bis(ethylenedithio)tetrathiafulvalene, salts with heavily fluorinated organosulfonate anions have been prepared and characterized. Of particular interest are the salts containing SF{sub 5}RSO{sub 3}{sup -} anions, where R is a partially fluorinated aliphatic backbone. While structurally similar --the {beta}' packing type predominates--the ground state of these salts varies from superconducting in the case of {beta}'-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3} [1] to insulating. Many of the salts with insulating ground states are metallic at room temperature, but charge localization and disproportionation over crystallographically non-equivalent sites occurs at low temperature. The organosulfonate group exhibits a propensity to bind to lithium ions, thus ternary salts incorporating Li+ into the complex anion layer are often found. The fluorophilic effect in organofluorine compounds may be exploited to form salts where the conducting BEDT-TTF layers are separated by extremely bulky anion bilayers. The crystal structure of one such system, (BEDT-TTF){sub 3}[(CF{sub 3}){sub 2}CFC{sub 2}H{sub 4}SO{sub 3}]{sub 4}(H{sub 5}O{sub 2}){sub 2}, is described here.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
949401
Report Number(s):
ANL/MSD/JA-40618
Journal ID: ISSN 0379-6779; SYMEDZ; TRN: US201012%%197
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Synth. Met.
Additional Journal Information:
Journal Volume: 133; Journal Issue: 2003; Journal ID: ISSN 0379-6779
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; ANIONS; BEDT-TTF; CRYSTAL STRUCTURE; GROUND STATES; LITHIUM IONS; OXIDATION; REDUCTION; SULFONATES

Citation Formats

Geiser, U, Schlueter, J A, Kini, A M, Wang, H H, Ward, B H, Mohtasham, J, Gard, G L, and Portland State Univ. BEDT-TFF salts with fluorinated sulfonate anions.. United States: N. p., 2003. Web. doi:10.1016/S0379-6779(02)00410-1.
Geiser, U, Schlueter, J A, Kini, A M, Wang, H H, Ward, B H, Mohtasham, J, Gard, G L, & Portland State Univ. BEDT-TFF salts with fluorinated sulfonate anions.. United States. https://doi.org/10.1016/S0379-6779(02)00410-1
Geiser, U, Schlueter, J A, Kini, A M, Wang, H H, Ward, B H, Mohtasham, J, Gard, G L, and Portland State Univ. 2003. "BEDT-TFF salts with fluorinated sulfonate anions.". United States. https://doi.org/10.1016/S0379-6779(02)00410-1.
@article{osti_949401,
title = {BEDT-TFF salts with fluorinated sulfonate anions.},
author = {Geiser, U and Schlueter, J A and Kini, A M and Wang, H H and Ward, B H and Mohtasham, J and Gard, G L and Portland State Univ.},
abstractNote = {A number of layered conducting BEDT-TTF, bis(ethylenedithio)tetrathiafulvalene, salts with heavily fluorinated organosulfonate anions have been prepared and characterized. Of particular interest are the salts containing SF{sub 5}RSO{sub 3}{sup -} anions, where R is a partially fluorinated aliphatic backbone. While structurally similar --the {beta}' packing type predominates--the ground state of these salts varies from superconducting in the case of {beta}'-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3} [1] to insulating. Many of the salts with insulating ground states are metallic at room temperature, but charge localization and disproportionation over crystallographically non-equivalent sites occurs at low temperature. The organosulfonate group exhibits a propensity to bind to lithium ions, thus ternary salts incorporating Li+ into the complex anion layer are often found. The fluorophilic effect in organofluorine compounds may be exploited to form salts where the conducting BEDT-TTF layers are separated by extremely bulky anion bilayers. The crystal structure of one such system, (BEDT-TTF){sub 3}[(CF{sub 3}){sub 2}CFC{sub 2}H{sub 4}SO{sub 3}]{sub 4}(H{sub 5}O{sub 2}){sub 2}, is described here.},
doi = {10.1016/S0379-6779(02)00410-1},
url = {https://www.osti.gov/biblio/949401}, journal = {Synth. Met.},
issn = {0379-6779},
number = 2003,
volume = 133,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 2003},
month = {Wed Jan 01 00:00:00 EST 2003}
}