Ferromagnetically Coupled S=1 Chains in Crystals of Verdazyl-Nitronyl Nitroxide Diradicals

Ferromagnetically Coupled S=1 Chains in Crystals of Verdazyl-Nitronyl Nitroxide Diradicals

מידע ביבליוגרפי
Parent link:Angewandte Chemie International Edition
Vol. 59, iss. 46.— 2020.— [P. 20704-20710]
מחבר תאגידי: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий
מחברים אחרים: Tretjyakov E. V. Evgeny Viktorovich, Zhivetjeva S. I. Svetlana Ivanovna, Petunin P. V. Pavel Vasilievich, Gorbunov D. E. Dmitry Evgenjevich, Gritsan N. P. Nina Petrovna, Bagryanskaya I. Yu. Irina Yurjevna, Bogomyakov A. S. Artem Stepanovich, Postnikov P. S. Pavel Sergeevich, Kazantsev M. S. Maksim Sergeevich, Trusova M. E. Marina Evgenievna, Shundrina I. K. Inna Kazimirovna, Zaytseva E. V. Elena Vasiljevna, Parkhomenko D. A. Dmitry Aleksandrovich, Bagryanskaya E. G. Elena Grigorjevna, Ovcharenko V. I. Viktor Ivanovich
סיכום:Title screen
Thermally stable organic diradicals with a triplet ground state along with large singlet-triplet energy gap have significant potential for advanced technological applications. A series of phenylene-bridged diradicals with oxoverdazyl and nitronyl nitroxide units were synthesized via a palladium-catalyzed cross-coupling reaction of iodoverdazyls with a nitronyl nitroxide-2-ide gold(I) complex with high yields. The diradicals exhibit high stability and do not decompose in an inert atmosphere up to 180?°C. For the diradicals, both substantial AF (?EST˜-64 cm-1) and FM (?EST=25 and 100 cm-1) intramolecular exchange interactions were observed. The sign of the exchange interaction is determined both by the bridging moiety (para- or meta-phenylene) and by the type of oxoverdazyl block (C-linked or N-linked). Upon crystallization, diradicals with the triplet ground state form unique one-dimensional exchange-coupled chains with strong intra- and weak inter-diradical ferromagnetic coupling.
Режим доступа: по договору с организацией-держателем ресурса
שפה:אנגלית
יצא לאור: 2020
נושאים:
электронный ресурс
труды учёных ТПУ
BS-DFT and high level calculations
ferromagnetic chain
high-spin molecules
nitroxides
triplet diradicals
ферромагнитные цепи
גישה מקוונת:https://doi.org/10.1002/anie.202010041
פורמט: אלקטרוני Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663336

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