Introduction of new guest molecules into BEDT-TTF radical-cation salts with tris(oxalato)ferrate

Blundell, TJ, Rusbridge, EK ORCID: https://orcid.org/0000-0001-8470-1039, Pemberton, RE, Brannan, MJ, Morritt, AL, Ogar, JO ORCID: https://orcid.org/0000-0002-2115-2885, Wallis, JD ORCID: https://orcid.org/0000-0001-7259-8783, Akutsu, H, Nakazawa, Y, Imajo, S and Martin, L ORCID: https://orcid.org/0000-0002-5330-5700, 2024. Introduction of new guest molecules into BEDT-TTF radical-cation salts with tris(oxalato)ferrate. CrystEngComm, 26 (14), pp. 1962-1975. ISSN 1466-8033

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Abstract

Radical-cation salts of formula β″-(BEDT-TTF) 4 [(H 3 O)Fe(C 2 O 4) 3 ]·guest have produced a large number of superconductors and provided a route to introduce magnetism and chirality into the same multifunctional material. A relationship has been found in these salts between the length of the b axis and the superconducting Tc. Increasing the b axis length by introducing larger guest molecules, such as benzonitrile and nitrobenzene, gives the highest superconducting Tcs in this family of salts. Smaller guests such as pyridine show no superconducting transition, whilst asymmetrical guests which are larger than nitrobenzene have given a different bilayered structure. Other potential guest molecules have been limited by their ability to be used as the solvent in which the crystals are grown via electrocrystallisation. This paper reports a method which introduces guest molecules into the crystal which are a solid or liquid additive within the crystal-growing solvent 1,2,4-trichlorobenzene:ethanol. We present the crystal structures of five new BEDT-TTF radical-cation salts with tris(oxalato)ferrate anions using guest molecules toluene, phenol, benzaldehyde, 4-bromobenzaldehyde, and kojic acid.

Item Type:	Journal article
Publication Title:	CrystEngComm
Creators:	Blundell, T.J., Rusbridge, E.K., Pemberton, R.E., Brannan, M.J., Morritt, A.L., Ogar, J.O., Wallis, J.D., Akutsu, H., Nakazawa, Y., Imajo, S. and Martin, L.
Publisher:	Royal Society of Chemistry
Date:	7 March 2024
Volume:	26
Number:	14
ISSN:	1466-8033
Identifiers:	Number Type 10.1039/d4ce00099d DOI 1871786 Other
Rights:	This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	08 Apr 2024 15:21
Last Modified:	08 Apr 2024 15:21
URI:	https://irep.ntu.ac.uk/id/eprint/51214

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