Metallic Conductivity in a Polyoxovanadate Radical Salt of Bis(ethylenedithio)tetrathiafulvalene (BEDT‐TTF): Synthesis, Structure, and Physical Characterization of β″‐(BEDT‐TTF)5[H3V10O28]·4H2O

Abstract
The first hybrid radical salt of bis(ethylenedithio)tetrathiafulvalene (BEDT‐TTF) using a polyoxovanadate as the counterion, (BEDT‐TTF)5[H3V10O28]·4H2O, has been obtained and characterized. It contains segregated mixed‐valence 2D stacks of organic radicals interleaved by anionic layers of [H3V10O28]3– anions (see Figure). This compound exhibits high electrical conductivity at room temperature and metallic behavior down to low temperatures.

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