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Syntheses, structures, and electroconductivity of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) and bis(methylenedithio)tetrathiafulvalene (BMDT-TTF) salts with cobalt 8,8′-dichloro-3,3′-bis(1,2-dicarbollide)

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Abstract

Radical cation salts of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) and bis(methylenedithio)tetrathiafulvalene (BMDT-TTF) with the 8,8′-dichloro derivative of cobalt bis(1,2-dicarbollide) (BEDT-TTF)2[8,8′-Cl2-3,3′-Co(1,2-C2B9H10)2] (1) and (BMDT-TTF)4[8,8′-Cl2-3,3′-Co(1,2-C2B9H10)2] (2) were synthesized and their crystal structures and electrocon-ducting properties were determined. The synthesized radical cation salts are semiconductors with the conductivity σ293 = 1.5 and 2.0 Ohm−1 cm−1, respectively. A decrease in the size of the substituent in a series of (BEDT-TTF)2[8,8′-X2-3,3′-Co(1,2-C2B9H10)2] and (BMDT-TTF)4[8,8′-X2-3,3′-Co(1,2-C2B9H10)2] (X = I, Br, Cl) results in the compression of the anion sublattice of the crystal and compaction of the radical cation packing of the conducting layer, which, in turn, increases the conductivity of the crystals.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Akad. Semenova, 142432, Chernogolovka, Moscow Region, Russian Federation

    O. N. Kazheva, L. I. Buravov & O. A. D’yachenko

  2. V. N. Karazin Kharkiv National University, 4 pl. Svobody, 61022, Kharkiv, Ukraine

    A. V. Kravchenko & V. A. Starodub

  3. N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119071, Moscow, Russian Federation

    G. G. Aleksandrov

  4. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991, Moscow, Russian Federation

    I. B. Sivaev, V. I. Bregadze, I. D. Kosenko & I. A. Lobanova

  5. Institute of Chemistry, The Jan Kochanowski University in Kielce, 5 ul. Zeromskiego, 25-369, Kielce, Poland

    V. A. Starodub

Authors
  1. O. N. Kazheva
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  2. A. V. Kravchenko
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  3. G. G. Aleksandrov
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  4. I. B. Sivaev
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  5. V. I. Bregadze
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  6. I. D. Kosenko
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  7. I. A. Lobanova
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  8. L. I. Buravov
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  9. V. A. Starodub
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  10. O. A. D’yachenko
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Corresponding author

Correspondence to I. A. Lobanova.

Additional information

Dedicated to Academician of the Russian Academy of Sciences O. N. Chupakhin on the occasion of his 80th birthday.

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1322–1329, June, 2014.

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Kazheva, O.N., Kravchenko, A.V., Aleksandrov, G.G. et al. Syntheses, structures, and electroconductivity of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) and bis(methylenedithio)tetrathiafulvalene (BMDT-TTF) salts with cobalt 8,8′-dichloro-3,3′-bis(1,2-dicarbollide). Russ Chem Bull 63, 1322–1329 (2014). https://doi.org/10.1007/s11172-014-0598-3

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  • DOI: https://doi.org/10.1007/s11172-014-0598-3

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