Effect of electrocrystallization medium on quality, structural features, and conducting properties of single crystals of the (BEDT-TTF)4AI[FeIII(C2O4)3] times G family

A modified procedure for the electrocrystallization of organic conductors with paramagnetic anions of the (BEDT-TTF)4AI[MIII(C2O4)3] times G family has been proposed. It is found that single crystals of different phases of the family can be prepared if the electrocrystallization medium is represente...

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Bibliographic Details
Published in:CrystEngComm 2011-01, Vol.13 (2), p.537-545
Main Authors: Prokhorova, T G, Buravov, LI, Yagubskii, E B, Zorina, LV, Khasanov, S S, Simonov, S V, Shibaeva, R P, Korobenko, A V, Zverev, V N
Format: Article
Language:English
Subjects:
Anions
Crystals
Ethyl alcohol
Phases
Single crystals
Solvents
Stoichiometry
Superconductivity
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Summary:A modified procedure for the electrocrystallization of organic conductors with paramagnetic anions of the (BEDT-TTF)4AI[MIII(C2O4)3] times G family has been proposed. It is found that single crystals of different phases of the family can be prepared if the electrocrystallization medium is represented by the mixture of 1,2,4-trichlorobenzene (or 1,3-dibromobenzene), 96% ethanol and different solvents (G), only the latter being included into the composition of the resulting salts as neutral guest molecules (G = benzonitrile, fluorobenzene, chlorobenzene, 1,2-dichlorobenzene, bromobenzene, nitrobenzene). Using this approach, a number of known and new BEDT-TTF salts with the tris(oxalato)ferrate anion have been synthesized. Among them, there are superconducting crystals of monoclinic [small beta][prime or minute][prime or minute]-series with different guest solvents (G) and their mixtures. For the first time, crystals of a triclinic phase (G = 1,2-dibromobenzene), with alternating [small alpha]- and 'pseudo-[small kappa]' BEDT-TTF layers and metallic behaviour down to 1.5 K, were obtained. Additionally, monoclinic crystals having another stoichiometry and [small alpha]-type donor packing were prepared.
ISSN:1466-8033
1466-8033
DOI:10.1039/C0CE00095G