Stabilization and Isolation of Radical Cation and Dication of a Tetrathiafulvalene Derivative Functionalized with Amino Groups

The radical cation and dication salts of a tetrathiafulvalene (TTF) derivative functionalized with two amino groups have been successfully stabilized and isolated by specifically chemical oxidation using polyfluoroalkoxyaluminate weak coordinating anion, [Al(ORF)4]− (ORF = OC(CF3)3). These compounds were characterized by UV-Vis-NIR absorption spectroscopy, 1H NMR, EPR, and X-ray single crystal diffraction, respectively. Comprehensive research on their structure-property relation in conjunction with theoretical calculations has been carried out.