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Ferromagnetically Coupled S=1 Chains in Crystals of Verdazyl-Nitronyl Nitroxide Diradicals.
Tretyakov, Evgeny V; Zhivetyeva, Svetlana I; Petunin, Pavel V; Gorbunov, Dmitry E; Gritsan, Nina P; Bagryanskaya, Irina Yu; Bogomyakov, Artem S; Postnikov, Pavel S; Kazantsev, Maxim S; Trusova, Marina E; Shundrina, Inna K; Zaytseva, Elena V; Parkhomenko, Dmitriy A; Bagryanskaya, Elena G; Ovcharenko, Victor I.
Afiliación
  • Tretyakov EV; N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, Novosibirsk, 630090, Russia.
  • Zhivetyeva SI; Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia.
  • Petunin PV; N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, Novosibirsk, 630090, Russia.
  • Gorbunov DE; Research School of Chemistry & Applied Biomedical Sciences, Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, 634050, Russia.
  • Gritsan NP; Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia.
  • Bagryanskaya IY; Voevodsky Institute of Chemical Kinetics and Combustions, 3 Institutskaya Str., Novosibirsk, 630090, Russia.
  • Bogomyakov AS; Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia.
  • Postnikov PS; Voevodsky Institute of Chemical Kinetics and Combustions, 3 Institutskaya Str., Novosibirsk, 630090, Russia.
  • Kazantsev MS; N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, Novosibirsk, 630090, Russia.
  • Trusova ME; Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia.
  • Shundrina IK; International Tomography Center, 3a Institutskaya Str., Novosibirsk, 630090, Russia.
  • Zaytseva EV; Research School of Chemistry & Applied Biomedical Sciences, Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, 634050, Russia.
  • Parkhomenko DA; University of Chemistry and Technology, 3 Technicka, 16628, Prague, Czech Republic.
  • Bagryanskaya EG; N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, Novosibirsk, 630090, Russia.
  • Ovcharenko VI; Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia.
Angew Chem Int Ed Engl ; 59(46): 20704-20710, 2020 Nov 09.
Article en En | MEDLINE | ID: mdl-32715591
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 (ΔEST ≈-64 cm-1 ) and FM (ΔEST ≥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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2020 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2020 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Alemania