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

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.