Abstract
Several derivatives of alkyl-substituted DTEDT have been synthesized. Single crystals of cation radical salts of dimethyl-DTEDT ( 1Ab) with octahedral anions showed high conductivities ( σ rt = 10 0–10 1 Scm −1) and metal-like behavior around room temperature. The metal to insulator transition temperature tends to decrease as the volume of anions increases. The PF 6, AsF 6 salts of cyclopenteno-DTEDT ( 1Ac), and TaF 6 salt of tetramethyl-DTEDT ( 1Bb) show metallic conducting behavior down to 50 K.
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