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Structures and physical properties of new ??-BEDT-TTF tris-oxalatometallate (III) salts containing chlorobenzene and halomethane guest molecules

Structures and physical properties of new ??-BEDT-TTF tris-oxalatometallate (III) salts containing chlorobenzene and halomethane guest molecules
Structures and physical properties of new ??-BEDT-TTF tris-oxalatometallate (III) salts containing chlorobenzene and halomethane guest molecules
We report the structures and physical properties of new ??-(BEDT-TTF)4[Fe(oxalate)3]·G salts where A = H3O+, G = PhCl; A = Rb+ G = Pyridine. The structure of the PhCl salt is isomorphous with ??-(BEDT-TTF)4[(H3O)M(oxalate)3] with other guest molecules. PhCl is ordered in die hexagonal pockets formed by the [(H3O)Fe(oxalate)3] layer. The electrical conductivity is metallic down to 100 K, below which the resistivity increases with decreasing temperature. The specific conductivity at room temperature is about 10 S/cm. We also report the salt ??-(BEDT-TTF)4[RbFe(oxalate)3]·Pyridine where Rb+ replaces H3O. The electrical resistivity shows metallic behavior down to 100 K. and turns up gradually to a maximum at 65 K below which the system re-enters the metallic state down to liquid helium temperature. Neither salt shows superconductivity down to 2 K. In addition, other new ??-(BEDT-TTF)4[(H3O)M(oxalate)3]·salts with M = Cr, Ga, Fe; G = CH2Cl2, CH2ClBr, CH2Br2 are also reported.
organic conductors based on radical cations and/or anion salts, metal-insulator phase transitions, magnetic measurements, bectrocrystallisation, charge-transfer salts, included solvent, nh4
373-376
Akutsu-Sato, A.
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Kobayashi, A.
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Mori, T.
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Akutsu, H.
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Yamada, J.
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Nakatsuji, S.
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Tumer, S.S.
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Day, P.
369f0667-c086-47c2-b22c-7b07afd64354
Tocher, D.A.
d6e02910-d3a0-4615-b76d-9f81321660d8
Light, M.E.
cf57314e-6856-491b-a8d2-2dffc452e161
Hursthouse, M.B.
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Akutsu-Sato, A.
88b14633-f452-460b-b2bb-36f1d07df9b8
Kobayashi, A.
6bea1fb6-69f6-4ab3-aedf-980e8717e2f9
Mori, T.
0490a692-1d94-4420-8e44-f2d803556c98
Akutsu, H.
5b22cae5-413d-4f19-9ed7-f005d7f1fff0
Yamada, J.
91883a26-598a-4bc5-b7db-e54ecdc4ac13
Nakatsuji, S.
8a0e0fed-ae92-4755-b4b7-445b771576bf
Tumer, S.S.
25aafc3d-7785-48f3-a77f-c433440be0cc
Day, P.
369f0667-c086-47c2-b22c-7b07afd64354
Tocher, D.A.
d6e02910-d3a0-4615-b76d-9f81321660d8
Light, M.E.
cf57314e-6856-491b-a8d2-2dffc452e161
Hursthouse, M.B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da

Akutsu-Sato, A., Kobayashi, A., Mori, T., Akutsu, H., Yamada, J., Nakatsuji, S., Tumer, S.S., Day, P., Tocher, D.A., Light, M.E. and Hursthouse, M.B. (2005) Structures and physical properties of new ??-BEDT-TTF tris-oxalatometallate (III) salts containing chlorobenzene and halomethane guest molecules. Synthetic Metals, 152 (1-3), 373-376. (doi:10.1016/j.synthmet.2005.07.089).

Record type: Article

Abstract

We report the structures and physical properties of new ??-(BEDT-TTF)4[Fe(oxalate)3]·G salts where A = H3O+, G = PhCl; A = Rb+ G = Pyridine. The structure of the PhCl salt is isomorphous with ??-(BEDT-TTF)4[(H3O)M(oxalate)3] with other guest molecules. PhCl is ordered in die hexagonal pockets formed by the [(H3O)Fe(oxalate)3] layer. The electrical conductivity is metallic down to 100 K, below which the resistivity increases with decreasing temperature. The specific conductivity at room temperature is about 10 S/cm. We also report the salt ??-(BEDT-TTF)4[RbFe(oxalate)3]·Pyridine where Rb+ replaces H3O. The electrical resistivity shows metallic behavior down to 100 K. and turns up gradually to a maximum at 65 K below which the system re-enters the metallic state down to liquid helium temperature. Neither salt shows superconductivity down to 2 K. In addition, other new ??-(BEDT-TTF)4[(H3O)M(oxalate)3]·salts with M = Cr, Ga, Fe; G = CH2Cl2, CH2ClBr, CH2Br2 are also reported.

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Published date: 20 September 2005
Keywords: organic conductors based on radical cations and/or anion salts, metal-insulator phase transitions, magnetic measurements, bectrocrystallisation, charge-transfer salts, included solvent, nh4

Identifiers

Local EPrints ID: 20699
URI: http://eprints.soton.ac.uk/id/eprint/20699
PURE UUID: e0f90f2b-2f72-41f9-8193-bddf2a652f7d
ORCID for M.E. Light: ORCID iD orcid.org/0000-0002-0585-0843

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Date deposited: 28 Feb 2006
Last modified: 12 Nov 2019 01:54

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Contributors

Author: A. Akutsu-Sato
Author: A. Kobayashi
Author: T. Mori
Author: H. Akutsu
Author: J. Yamada
Author: S. Nakatsuji
Author: S.S. Tumer
Author: P. Day
Author: D.A. Tocher
Author: M.E. Light ORCID iD
Author: M.B. Hursthouse

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