Anion size control of the packing in the metallic versus semiconducting chiral radical cation salts (DM-EDT-TTF) 2 XF 6 (X = P, As, Sb).

Control of the structural type in metallic enantiopure and racemic radical cation salts is achieved through hydrogen bonding interactions between the chiral donor DM-EDT-TTF and the XF ₆ anions (X = P, As, Sb), determined by the anion size and the chiral information.