Thermal properties of alkyloctamethylferrocenium salts with TFSA and TCNE (TFSAÂ =Â bis(trifluoromethylsulfonyl)amide and TCNEÂ =Â tetracyanoethylene)

► Preparation and DSC investigation of alkyloctamethylferrocenium salts. ► Alkyloctamethylferrocenium-TFSA salts are ionic liquids. ► Alkyloctamethylferrocenium-TCNE salts exhibit high melting points.