Abstract
New radical cation salts based on 2,5-bis(1,3-dithiolan-2-ylidene)-1,3,4,6-tetrathiapentalene (BDH-TTP), viz., κ-(BDH-TTP)4CuCl4·(H2O) n (1) and κ-(BDH-TTP)2[CuCl4]0.67· ·(H2O)0.33 (2), were synthesized and structurally characterized. Single crystals were prepared by the electrochemical oxidation of BDH-TTP under galvanostatic conditions. The X-ray diffraction study showed that the salts have layered structures characterized by the presence of κ-type BDH-TTP conducting layers. These layers alternate with the complex anions composed of [CuCl4]2− units and water molecules. Both salts exhibit the temperature dependence of the metallic conductivity down to 4.2 K. Spin-spin antiferromagnetic correlations in the Cu2+ subsystem were observed in the crystals of 2.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1683–1688, September, 2010.
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Kushch, N.D., Kazakova, A.V., Buravov, L.I. et al. New molecular magnetic metals: κ-(BDH-TTP)4CuCl4·(H2O) n and κ-(BDH-TTP)2[CuCl4]0.67·(H2O)0.33 (BDH-TTP is 2,5-bis(1,3-dithiolan-2-ylidene)-1,3,4,6-tetrathiapentalene). Russ Chem Bull 59, 1729–1734 (2010). https://doi.org/10.1007/s11172-010-0304-z
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DOI: https://doi.org/10.1007/s11172-010-0304-z