First radical cation salts based on dibenzotetrathiafulvalene (DBTTF) with metallacarborane anions: Synthesis, structure, properties

New radical-cation salts based on tetramethyltetrathiafulvalene (TMTTF) and tetramethyltetraselenefulvalene (TMsTSF) with metallacarborane anions (TMTTF)[3,3′-Cr(1,2-C2B9H11)2], (TMTTF)[3,3′-Fe(1,2-C2B9H11)2], and (TMTSF)2[3,3′-Cr(1,2-C2B9H11)2] were synthesized by electrocrystallization. Their crystal structures were determined by single crystal X-ray diffraction, and their electrophysical properties in a wide temperature range were studied. The first two salts are dielectrics, while the third one is a narrow-gap semiconductor: σRT = 5 × 10−3 Ohm−1cm−1; Ea ≈ 0.04 eV (aprox. 320 cm−1).

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Preparation, structure, properties and phase transitions of new radical cation salts

Synthetic Metals ◽

10.1016/0379-6779(91)91421-6 ◽

1991 ◽

Vol 42 (3) ◽

pp. 2547-2552 ◽

Cited By ~ 10

Author(s):

V. Enkelmann

Keyword(s):

Phase Transitions ◽

Radical Cation ◽

Radical Cation Salts ◽

Structure Properties

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Radical Cation Salts of Arenes. Structure, Properties and Model Character for Conducting Polymers

Molecular Crystals and Liquid Crystals ◽

10.1080/00268948508075787 ◽

1985 ◽

Vol 120 (1) ◽

pp. 195-204 ◽

Cited By ~ 21

Author(s):

V. Enkelmann ◽

K. Göckelmann ◽

G. Wieners ◽

M. Monkenbusch

Keyword(s):

Conducting Polymers ◽

Radical Cation ◽

Radical Cation Salts ◽

Structure Properties

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Peculiarities of the synthesis, structure and properties of ET radical cation salts prepared in the presence of the rare-earth metal complex anions

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:2004114124 ◽

2004 ◽

Vol 114 ◽

pp. 527-528 ◽

Cited By ~ 3

Author(s):

N. D. Kushch ◽

A. V. Kazakova ◽

L. I. Buravov ◽

A. N. Chekhlov ◽

E. B. Yagubskii

Keyword(s):

Rare Earth ◽

Metal Complex ◽

Radical Cation ◽

Rare Earth Metal ◽

Earth Metal ◽

Structure And Properties ◽

Rare Earth Metal Complex ◽

Radical Cation Salts ◽

Complex Anions ◽

The Rare Earth

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New Radical Cation Salts Based on BDH-TTP Donor: Two Stable Molecular Metals with a Magnetic [ReF6]2− Anion and a Semiconductor with a [ReO4]− Anion

Magnetochemistry ◽

10.3390/magnetochemistry7040054 ◽

2021 ◽

Vol 7 (4) ◽

pp. 54

Author(s):

Nataliya D. Kushch ◽

Gennady V. Shilov ◽

Lev I. Buravov ◽

Eduard B. Yagubskii ◽

Vladimir N. Zverev ◽

...

Keyword(s):

Radical Cation ◽

Low Temperatures ◽

Ac Susceptibility ◽

Slow Relaxation ◽

Organic Radical ◽

Inorganic Anion ◽

Distinctive Features ◽

Metallic Character ◽

Radical Cation Salts ◽

Partial Population

Three radical cation salts of BDH-TTP with the paramagnetic [ReF6]2− and diamagnetic [ReO4]− anions have been synthesized: κ-(BDH-TTP)4ReF6 (1), κ-(BDH-TTP)4ReF6·4.8H2O (2) and pseudo-κ″-(BDH-TTP)3(ReO4)2 (3). The crystal and band structures, as well as the conducting properties of the salts, have been studied. The structures of the three salts are layered and characterized by alternating κ-(1, 2) and κ″-(3) type organic radical cation layers with inorganic anion sheets. Similar to other κ-salts, the conducting layers in the crystals of 1 and 2 are formed by BDH-TTP dimers. The partial population of positions of Re atoms and disorder in the anionic layers of 1–3 are their distinctive features. Compounds 1 and 2 show the metallic character of conductivity down to low temperatures, while 3 is a semiconductor. The ac susceptibility of crystals 1 was investigated in order to test the possible slow relaxation of magnetization associated with the [ReF6]2− anion.

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