Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions
Up to five different crystalline radical salts have been prepared with the organic donor BEDT-TTF and three different polynitrile anions. With the polynitrile dianion tcpd2− (=C[C(CN)2]32−), two closely related radical salts: α'-(ET)4tcpd·THF (1) (THF = tetrahydrofurane) and α'-(ET...
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MDPI AG
2012-04-01
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| Series: | Crystals |
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| Online Access: | http://www.mdpi.com/2073-4352/2/2/306 |
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| author | Carlos J. Gómez-García Smail Triki Mathieu Marchivie Samia Benmansour |
| author_facet | Carlos J. Gómez-García Smail Triki Mathieu Marchivie Samia Benmansour |
| author_sort | Carlos J. Gómez-García |
| collection | DOAJ |
| description | Up to five different crystalline radical salts have been prepared with the organic donor BEDT-TTF and three different polynitrile anions. With the polynitrile dianion tcpd2− (=C[C(CN)2]32−), two closely related radical salts: α'-(ET)4tcpd·THF (1) (THF = tetrahydrofurane) and α'-(ET)4tcpd·H2O (2) have been prepared, depending on the solvent used in the synthesis. With the mono-anion tcnoetOH− (=[(NC)2CC(OCH2CH2OH)C(CN)2]−) two polymorphs with similar physical properties but different crystal packings have been synthesized: θ-(ET)2(tcnoetOH) (3) and β''-(ET)2(tcnoetOH) (4). Finally, with the mono-anion tcnoprOH− (=[(NC)2CC(OCH2CH2CH2OH)C(CN)2]−) we have prepared a metallic radical salt: β''-(ET)2(tcnoprOH)(CH2Cl2CH3Cl)0.5 (5). Salts 1‑4 are semiconductors with high room temperature conductivities and activation energies in the range 0.1–0.5 eV, whereas salt 5 is metallic down to 0.4 K although it does not show any superconducting transition above this temperature. |
| first_indexed | 2024-04-14T06:34:51Z |
| format | Article |
| id | doaj.art-ca0c42e36c60492ab2ccedb5ba71ab61 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-14T06:34:51Z |
| publishDate | 2012-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-ca0c42e36c60492ab2ccedb5ba71ab612022-12-22T02:07:30ZengMDPI AGCrystals2073-43522012-04-012230632610.3390/cryst2020306Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano AnionsCarlos J. Gómez-GarcíaSmail TrikiMathieu MarchivieSamia BenmansourUp to five different crystalline radical salts have been prepared with the organic donor BEDT-TTF and three different polynitrile anions. With the polynitrile dianion tcpd2− (=C[C(CN)2]32−), two closely related radical salts: α'-(ET)4tcpd·THF (1) (THF = tetrahydrofurane) and α'-(ET)4tcpd·H2O (2) have been prepared, depending on the solvent used in the synthesis. With the mono-anion tcnoetOH− (=[(NC)2CC(OCH2CH2OH)C(CN)2]−) two polymorphs with similar physical properties but different crystal packings have been synthesized: θ-(ET)2(tcnoetOH) (3) and β''-(ET)2(tcnoetOH) (4). Finally, with the mono-anion tcnoprOH− (=[(NC)2CC(OCH2CH2CH2OH)C(CN)2]−) we have prepared a metallic radical salt: β''-(ET)2(tcnoprOH)(CH2Cl2CH3Cl)0.5 (5). Salts 1‑4 are semiconductors with high room temperature conductivities and activation energies in the range 0.1–0.5 eV, whereas salt 5 is metallic down to 0.4 K although it does not show any superconducting transition above this temperature.http://www.mdpi.com/2073-4352/2/2/306bis(ethylenedithio)tetrathiafulvalenepolycyano anionsmolecular conductorssynthetic metals |
| spellingShingle | Carlos J. Gómez-García Smail Triki Mathieu Marchivie Samia Benmansour Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions Crystals bis(ethylenedithio)tetrathiafulvalene polycyano anions molecular conductors synthetic metals |
| title | Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions |
| title_full | Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions |
| title_fullStr | Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions |
| title_full_unstemmed | Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions |
| title_short | Polymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions |
| title_sort | polymorphism and metallic behavior in bedt ttf radical salts with polycyano anions |
| topic | bis(ethylenedithio)tetrathiafulvalene polycyano anions molecular conductors synthetic metals |
| url | http://www.mdpi.com/2073-4352/2/2/306 |
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