Research output: Contribution to journal › Article › peer-review
Assembly of imidazolyl-substituted nitronyl nitroxides into ferromagnetically coupled chains. / Romanov, Vasily; Bagryanskaya, Irina; Gritsan, Nina et al.
In: Crystals, Vol. 9, No. 4, 219, 01.04.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Assembly of imidazolyl-substituted nitronyl nitroxides into ferromagnetically coupled chains
AU - Romanov, Vasily
AU - Bagryanskaya, Irina
AU - Gritsan, Nina
AU - Gorbunov, Dmitry
AU - Vlasenko, Yulia
AU - Yusubov, Mehman
AU - Zaytseva, Elena
AU - Luneau, Dominique
AU - Tretyakov, Evgeny
N1 - Publisher Copyright: © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2019/4/1
Y1 - 2019/4/1
N2 - New nitronyl nitroxides, namely, 2-(4,5-dimethylimidazol-2-yl)-and 2-(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.
AB - New nitronyl nitroxides, namely, 2-(4,5-dimethylimidazol-2-yl)-and 2-(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.
KW - Crystal structure
KW - Density functional theory
KW - Exchange interaction
KW - Hydrogen bonding
KW - Imidazole
KW - Nitronyl nitroxides
KW - DESIGN
KW - nitronyl nitroxides
KW - imidazole
KW - SPIN
KW - CRYSTAL-STRUCTURE
KW - exchange interaction
KW - HYDROGEN-BONDS
KW - hydrogen bonding
KW - ORGANIC MOLECULAR-SOLIDS
KW - density functional theory
KW - crystal structure
KW - RADICALS
UR - http://www.scopus.com/inward/record.url?scp=85065912699&partnerID=8YFLogxK
U2 - 10.3390/cryst9040219
DO - 10.3390/cryst9040219
M3 - Article
AN - SCOPUS:85065912699
VL - 9
JO - Crystals
JF - Crystals
SN - 2073-4352
IS - 4
M1 - 219
ER -
ID: 20030540