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

Crystals

Olga N. Kazheva⁵  Grigory G. Aleksandrov³  Andrey V. Kravchenko¹  Vladimir A. Starodub⁴  Irina A. Lobanova²  Irina D. Kosenko²  Igor B. Sivaev²  Vladimir I. Bregadze²  Lev I. Buravov⁵ 

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

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

DOI  :  10.3390/cryst2010043

来源: mdpi

【 摘 要 】

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 (σ₂₉₃ = 2 Ω⁻¹cm⁻¹ and 10⁻⁵ Ω⁻¹cm⁻¹, respectively).

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.