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
| Autor: | Lev I. Buravov, Eduard B. Yagubskii, Jun-ichi Yamada, Enric Canadell, Vladimir N. Zverev, Gennady V. Shilov, Nataliya D. Kushch |
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| Přispěvatelé: | Ministry of Science and Higher Education of the Russian Federation, Ministerio de Ciencia, Innovación y Universidades (España), Generalitat de Catalunya |
| Rok vydání: | 2021 |
| Předmět: |
Population
metal complex anions Ion Crystal Metal organic conductors Paramagnetism Magnetization crystal and band structures Crystal and band structures Magnetic properties Materials Chemistry electrocrystallization education QD1-999 Molecular magnets education.field_of_study Conductivity Chemistry Metal complex anions Electronic Optical and Magnetic Materials Electrocrystallization Crystallography Radical ion Chemistry (miscellaneous) visual_art Organic conductors visual_art.visual_art_medium Diamagnetism molecular magnets conductivity |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Magnetochemistry, Vol 7, Iss 54, p 54 (2021) Magnetochemistry Volume 7 Issue 4 |
| Popis: | 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. This research was funded by the Ministry of Science and Higher Education of the Russian Federation (Grant No. 075-15-2020-779). Work in Spain was supported by MICIU (through the Severo Ochoa FUNFUTURE (CEX2019-000917-S) Excellence Centre distinction and Grant PGC 2018-096955-B-C44), and by Generalitat de Catalunya (2017SGR1506). |
| Databáze: | OpenAIRE |
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