Radical-cation salts of BEDT-TTF with tris-coordinated racemic dysprosium(III) and terbium(III) anions

Emily Howarth; Jordan Lopez; Joseph O Ogar; Toby J Blundell; Hiroki Akutsu; Yasuhiro Nakazawa; Shusaku Imajo; Yoshihiko Ihara; Simon J Coles; Peter N Horton; Jeppe Christensen; Lee Martin

doi:10.1039/d4dt03484h

Radical-cation salts of BEDT-TTF with tris-coordinated racemic dysprosium(III) and terbium(III) anions

Dalton Trans. 2025 Jan 17. doi: 10.1039/d4dt03484h. Online ahead of print.

Authors

Affiliations

¹ School of Science and Technology, Nottingham Trent University, Clifton Lane, Clifton, Nottingham, NG11 8NS, UK. [email protected].
² Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.
³ The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
⁴ Department of Quantum and Condensed Matter Physics, School of Science, Hokkaido University, Kita-ku, Sapporo, 060-0810, Hokkaido, Japan.
⁵ School of Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.

PMID: 39821225
DOI: 10.1039/d4dt03484h

Abstract

This paper reports the synthesis, crystal structures and conducting properties of the first BEDT-TTF radical-cation salts with D₃ symmetry tris-coordinated racemic lanthanide(III) anions. It is also the first crystallographic determination of the nine-coordinate tris(chelidonato)terbate and tris(chelidonato)dysprosate anions (chelidonic acid = clo = 4-oxo-4H-pyran-2,6-dicarboxylic acid). Salt α-(BEDT-TTF)₅M(chelidonato)₃·EtOH·2H₂O is semimetallic for M = Tb, and semiconducting for M = Dy. These conducting properties are consistent with the band structure for both salts.