Assembly of Imidazolyl-Substituted Nitronyl Nitroxides into Ferromagnetically Coupled Chains; Crystals; Vol. 9, iss. 4
| Parent link: | Crystals Vol. 9, iss. 4.— 2019.— [219, 12 p.] |
|---|---|
| Corporate Author: | |
| Other Authors: | , , , , , , , , |
| Summary: | Title screen New nitronyl nitroxides, namely, 2-(4,5-dimethylimidazol-2-yl)- and2-(4,5-dichloroimidazol-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-3-oxide-1-oxyl, were prepared in crystalline form. According to single-crystal X-ray data, intra- and intermolecular hydrogen bonds are formed between NH groups of the imidazole cycles and O atoms of the nitroxide moieties. The intermolecular H-bonds contribute to the alignment of molecules into chains along the a-axis; this alignment causes short intrachain contacts between O and C atoms carrying spin density of opposite signs. Such an arrangement of nitroxides induces ferromagnetic intrachain interactions (J 10 cm-1) between neighboring radicals. |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://doi.org/10.3390/cryst9040219 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660249 |
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| 200 | 1 | |a Assembly of Imidazolyl-Substituted Nitronyl Nitroxides into Ferromagnetically Coupled Chains |f V. Romanov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 35 tit.] | ||
| 330 | |a New nitronyl nitroxides, namely, 2-(4,5-dimethylimidazol-2-yl)- and2-(4,5-dichloroimidazol-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-3-oxide-1-oxyl, were prepared in crystalline form. According to single-crystal X-ray data, intra- and intermolecular hydrogen bonds are formed between NH groups of the imidazole cycles and O atoms of the nitroxide moieties. The intermolecular H-bonds contribute to the alignment of molecules into chains along the a-axis; this alignment causes short intrachain contacts between O and C atoms carrying spin density of opposite signs. Such an arrangement of nitroxides induces ferromagnetic intrachain interactions (J 10 cm-1) between neighboring radicals. | ||
| 461 | |t Crystals | ||
| 463 | |t Vol. 9, iss. 4 |v [219, 12 p.] |d 2019 | ||
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a nitronyl nitroxides | |
| 610 | 1 | |a imidazole | |
| 610 | 1 | |a crystal structure | |
| 610 | 1 | |a hydrogen bonding | |
| 610 | 1 | |a exchange interaction | |
| 610 | 1 | |a density functional theory | |
| 610 | 1 | |a имидазол | |
| 610 | 1 | |a водородная связь | |
| 610 | 1 | |a обменное взаимодействие | |
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| 701 | 1 | |a Gritsan |b N. |g Nina | |
| 701 | 1 | |a Gorbunov |b D. |g Dmitry | |
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| 701 | 1 | |a Luneau |b D. |g Dominique | |
| 701 | 1 | |a Tretyakov |b E. |g Evgeny | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа химических и биомедицинских технологий (ИШХБМТ) |c (2017- ) |3 (RuTPU)RU\TPU\col\23537 |
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