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Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate

Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate
Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate

We present the synthesis, crystal structures and conducting properties of six new BEDT-TTF radical-cation salts with the tris(oxalato)gallate or -iridate anion. The use of halobenzenes gives 4 : 1 β′′ metallic or superconducting salts with tris(oxalato)gallate - fluorobenzene (PhF) or chlorobenzene (PhCl) as a guest molecule gives a metal, whilst the larger bromobenzene (PhBr) or iodobenzene (PhI) gives a superconductor. A 4 : 1 pseudo-κ semiconducting salt is obtained with benzonitrile as the guest molecule for tris(oxalato)iridate, and a novel 5 : 1 metal-insulator phase with tris(oxalato)iridate is also reported.

2633-5409
4724-4735
Blundell, Toby J.
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Morritt, Alexander L.
35282a5d-f3ab-426d-a545-7e6a8b5bab50
Rusbridge, Elizabeth K.
db4d8998-d86a-4137-a05d-0e2939ac0103
Quibell, Luke
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Oakes, Jakob
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Akutsu, Hiroki
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Nakazawa, Yasuhiro
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Imajo, Shusaku
fc48abc2-a9e1-49e6-8e98-a7380bbf6af8
Kadoya, Tomofumi
ac4c9862-6a0b-4583-9606-6f2531129896
Yamada, Jun Ichi
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Coles, Simon J.
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Christensen, Jeppe
f37d3a1e-05d9-4144-8af2-bd29ead7d9c3
Martin, Lee
1948770a-a2a4-4eed-9c70-52cb76b2725c
Blundell, Toby J.
7ee01e4f-c9af-40c9-b17b-dcc9c77b2e7e
Morritt, Alexander L.
35282a5d-f3ab-426d-a545-7e6a8b5bab50
Rusbridge, Elizabeth K.
db4d8998-d86a-4137-a05d-0e2939ac0103
Quibell, Luke
5397aae8-6c63-4dde-8175-a8e7b0724393
Oakes, Jakob
dac20dd0-609f-4e28-a24b-503e5d2aa45a
Akutsu, Hiroki
86a57ad8-7b6f-4df2-be69-25b1c08d9a6c
Nakazawa, Yasuhiro
5b8ba8d3-4280-499c-a943-8c5ccc80e7cb
Imajo, Shusaku
fc48abc2-a9e1-49e6-8e98-a7380bbf6af8
Kadoya, Tomofumi
ac4c9862-6a0b-4583-9606-6f2531129896
Yamada, Jun Ichi
dabccccb-fecf-4b4e-b022-fe7b2a984d82
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Christensen, Jeppe
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Martin, Lee
1948770a-a2a4-4eed-9c70-52cb76b2725c

Blundell, Toby J., Morritt, Alexander L., Rusbridge, Elizabeth K., Quibell, Luke, Oakes, Jakob, Akutsu, Hiroki, Nakazawa, Yasuhiro, Imajo, Shusaku, Kadoya, Tomofumi, Yamada, Jun Ichi, Coles, Simon J., Christensen, Jeppe and Martin, Lee (2022) Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate. Materials Advances, 3 (11), 4724-4735. (doi:10.1039/d2ma00384h).

Record type: Article

Abstract

We present the synthesis, crystal structures and conducting properties of six new BEDT-TTF radical-cation salts with the tris(oxalato)gallate or -iridate anion. The use of halobenzenes gives 4 : 1 β′′ metallic or superconducting salts with tris(oxalato)gallate - fluorobenzene (PhF) or chlorobenzene (PhCl) as a guest molecule gives a metal, whilst the larger bromobenzene (PhBr) or iodobenzene (PhI) gives a superconductor. A 4 : 1 pseudo-κ semiconducting salt is obtained with benzonitrile as the guest molecule for tris(oxalato)iridate, and a novel 5 : 1 metal-insulator phase with tris(oxalato)iridate is also reported.

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Accepted/In Press date: 25 April 2022
e-pub ahead of print date: 13 May 2022
Published date: 6 June 2022
Additional Information: Funding Information: L. M. and T. B. would like to thank the Leverhulme Trust for financial support (RPG-2019-242). L. M. and E. K. R. would like to thank NTU for a PhD studentship. We thank EPSRC for funding the National Crystallography Service.

Identifiers

Local EPrints ID: 470079
URI: http://eprints.soton.ac.uk/id/eprint/470079
ISSN: 2633-5409
PURE UUID: 0cb124e7-60d4-4dd1-95d9-f1d7096c6dc4
ORCID for Simon J. Coles: ORCID iD orcid.org/0000-0001-8414-9272

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Date deposited: 03 Oct 2022 16:36
Last modified: 04 Oct 2022 01:37

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Contributors

Author: Toby J. Blundell
Author: Alexander L. Morritt
Author: Elizabeth K. Rusbridge
Author: Luke Quibell
Author: Jakob Oakes
Author: Hiroki Akutsu
Author: Yasuhiro Nakazawa
Author: Shusaku Imajo
Author: Tomofumi Kadoya
Author: Jun Ichi Yamada
Author: Simon J. Coles ORCID iD
Author: Jeppe Christensen
Author: Lee Martin

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