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• Kazheva, O
• Aleksandrov, G
• Kravchenko, A
• Starodub, V
• Lobanova, I
• Kosenko, I
• Sivaev, I
• Bregadze, V
• Buravov, L
• Dyachenko, O
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• Kazheva, O
• Aleksandrov, G
• Kravchenko, A
• Starodub, V
• Lobanova, I
• Kosenko, I
• Sivaev, I
• Bregadze, V
• Buravov, L
• Dyachenko, O
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• Kazheva, O
• Aleksandrov, G
• Kravchenko, A
• Starodub, V
• Lobanova, I
• Kosenko, I
• Sivaev, I
• Bregadze, V
• Buravov, L
• Dyachenko, O

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Crystals 2012, 2(1), 43-55; doi:10.3390/cryst2010043

Article

New Fulvalenium Salts of Cobalt Bis(dicarbollide): Crystal Structures and Electrical Conductivities

Olga N. Kazheva ¹ , Grigory G. Aleksandrov ² , Andrey V. Kravchenko ³ , Vladimir A. Starodub ⁴ , Irina A. Lobanova ⁵ , Irina D. Kosenko ⁵ , Igor B. Sivaev ^5,* , Vladimir I. Bregadze ⁵ , Lev I. Buravov ¹  and Oleg A. Dyachenko ¹

¹ Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov Av. 1, 142432, Chernogolovka, Moscow Region, Russia ² N.S.Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991, Moscow, Russia ³ V.N.Karazin Kharkiv National University, Svoboda Sq. 4, 61077, Kharkiv, Ukraine ⁴ Institute of Chemistry, Jan Kochanowski University of Humanities and Sciences, 15G Swietokrzyska Str., 25-406, Kielce, Poland ⁵ A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991, Moscow, Russia

* Author to whom correspondence should be addressed.

Received: 6 December 2011; in revised form: 21 December 2011 / Accepted: 22 December 2011 / Published: 6 January 2012

(This article belongs to the Special Issue Molecular Conductors)

Download PDF Full-Text [452 KB, uploaded 6 January 2012 14:37 CET]

Abstract: New radical cation salts (BEDT-TTF)[8,8',(7)-Cl₂(Cl_0.09)-3,3'-Co(1,2-C₂B₉H_9.91)(1',2'-C₂B₉H₁₀)] (1), (BEDT-TTF)[8,8'-Br_0.75Cl_1.25-3,3'-Co(1,2-C₂B₉H₁₀)₂] (2), and (BMDT-TTF)₄[8,8'-Br_1.16(OH)_0.72-3,3'-Co(1,2-C₂B₉H_10.06)₂] (3) were synthesized, and their crystal structures and electrical conductivities were determined. All the radical cation salts are semiconductors. Compounds 1 and 2 were found to be isostructural, however their electrical conductivities strongly differ (s₂₉₃ = 2 Ω⁻¹cm⁻¹ and 10⁻⁵ Ω⁻¹cm⁻¹, respectively).

Keywords: molecular conductors; cobalt bis(dicarbollide); bis(ethylenedithio) tetrathiafulvalene; bis(methylenedithio)tetrathiafulvalene; structure; conductivity

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