One-dimensional antiferromagnetic chain in the cation radical salt α-(BEDT-TTF)2Hg(SeCN)2Cl

A. Henderson; A. Razpopov; S. Biswas; R. Valentí; H. Cui; R. Kato; K. Wei; J. van Tol; T. Siegrist; J. A. Schlueter

doi:10.1039/D5CE00007F

One-dimensional antiferromagnetic chain in the cation radical salt α-(BEDT-TTF)₂Hg(SeCN)₂Cl†

A. Henderson,^ab A. Razpopov,

^c S. Biswas,^c R. Valentí,

^c H. Cui,^d R. Kato,

^d K. Wei,^b J. van Tol,

^b T. Siegrist

*^be and J. A. Schlueter

*^f

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* Corresponding authors

^a Department of Physics, Florida State University, Tallahassee, FL 32310, USA

^b National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310, USA

^c Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany

^d Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan

^e Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, USA
E-mail: TSiegrist@fsu.edu

^f Division of Materials Research, National Science Foundation, Alexandria, VA 22314, USA
E-mail: JSchluet@nsf.gov, JASchlueter@anl.gov

Abstract

Replacement of sulfur with selenium in the anion of the (BEDT-TTF)₂Hg(QCN)₂Cl (Q = S, Se) cation radical salts results in a dramatic change in the anion structure and the BEDT-TTF packing motif. Here we report the new α-(BEDT-TTF)₂Hg(SeCN)₂Cl salt that stabilizes charge disproportionation between two crystallographically independent BEDT-TTF molecules resulting in the formation of 1D spin chains perpendicular to the stacking axis.

CrystEngComm

One-dimensional antiferromagnetic chain in the cation radical salt α-(BEDT-TTF)₂Hg(SeCN)₂Cl†

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One-dimensional antiferromagnetic chain in the cation radical salt α-(BEDT-TTF)₂Hg(SeCN)₂Cl

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