Synthesis, structure, electrical and magnetic properties of (BEDT-TTF)2[3,3′-Fe(1,2-C2B9H11)2]

Abstract: New radical cation salt of bis(ethylenedithio)tetrathiafulvalenium and iron bis(dicarbollide) [BEDT-TTF]2[3,3′-Fe(1,2-C2B9H11)2] (1) has been synthesized. The crystal structure of 1 has been determined by single-crystal X-ray diffraction method found to be isostructural to the known Co and Cr analogues. The electric conductivity measurement in the range of 110÷296 К shows that 1 is semiconductor with the room temperature conductivity σ293 =1.5×10−2 Ω−1 cm−1, that is higher than in the Cr analogue and lower than in the Co analogue. The measurement of magnetic susceptibility in the range of 2÷300K revealed that 1 is paramagnetic with the absence of significant interactions between the organic radical cations and the paramagnetic anions. [Copyright &y& Elsevier]