Structure and conducting properties of new radical cation salts with cobalt bis(dicarbollide) anion
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KAZHEVA, Olga, CHEKHLOV, A., ALEKSANDROV, Grigorii, KRAVCHENKO, A., STARODUB, V., SIVAEV, I., BREGADZE, V., BURAVOV, L., DYACHENKO, Oleg. Structure and conducting properties of new radical cation salts with cobalt bis(dicarbollide) anion. In: Physical Methods in Coordination and Supramolecular Chemistry, 27 septembrie - 1 octombrie 2006, Chişinău. Chisinau, Republic of Moldova: 2006, XVII, p. 135. ISBN 978-9975-62-066-6.
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Physical Methods in Coordination and Supramolecular Chemistry
XVII, 2006
Conferința "The XV-th International Conference Physical Methods in Coordination and Supramolecular Chemistry : The XVII-th Reading in memory of Acad. A.Ablov"
Chişinău, Moldova, 27 septembrie - 1 octombrie 2006

Structure and conducting properties of new radical cation salts with cobalt bis(dicarbollide) anion


Pag. 135-135

Kazheva Olga1, Chekhlov A.1, Aleksandrov Grigorii2, Kravchenko A.3, Starodub V.3, Sivaev I.4, Bregadze V.4, Buravov L.1, Dyachenko Oleg5
 
1 Institute of Problems of Chemical Physics, Chernogolovka, Moscow Region,
2 Kurnakov Institute of General and Inorganic Chemistry of the RAS, Moscow ,
3 V.N.Karazin Kharkiv Natsonal University,
4 A.N.Nesmeyanov Institute of Organoelement Compounds of RAS,
5 Institute of Problems of Chemical Physics, Russian Academy of Sciences
 
Disponibil în IBN: 12 iunie 2020


Rezumat

First molecular conductors with cobalt bis(dicarbollide) anion were synthesized and investigated: (TMTSF)2[3,3’-Co(1,2-C2B9H11)2] (1) (Fig. 1a), (TTF)[3,3’-Co(1,2-C2B9H11)2] (2) and (ET)[3,3’-Co(1,2-C2B9H11)2] (3). Salt (1) is a semiconductor with activation energy Ea ≅ 0.03 eV, conductivity σ293 = 15 Ohm-1cm-1 (Fig. 1b), that is the maximum value of conductivity for metallacarborane radical cation salts [1-4] at room temperature.figureFig. 1. Crystal structure (a) and temperature dependence of resistance (b) for the single crystal of (TMTSF)2[3,3’-Co(1,2-C2B9H11)2].Unlike low-conducting (TTF)[3,3’-Co(1,2-C2B9H11)2], (ET)[3,3’-Co(1,2-C2B9H11)2] salts and similar (TTF)[3,3’-M(1,2-C2B9H11)2] (M = Fe, Ni [1]) salts having neither stacks nor layers and characterized by a cisoid conformation of [3,3’-Co(1,2-C2B9H11)2]- anion, (TMTSF)2[3,3’-Co(1,2C2B9H11)2] (1) salt has conducting stacks and characterized by anion in transoid conformation.