Polymer lanthanide cymantrenecarboxylatesстатья
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Дата последнего поиска статьи во внешних источниках: 26 августа 2016 г.
Авторы:
Koroteev P.S. ,
Dobrokhotova Z.V. ,
Ilyukhin A.B. ,
Efimov N.N. ,
Gavrikov A.V.,
Novotortsev V.M.
Журнал:
Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Том:
41
Номер:
12
Год издания:
2015
Издательство:
Maik Nauka/Interperiodica Publishing
Местоположение издательства:
Russian Federation
Первая страница:
805
Последняя страница:
816
DOI:
10.1134/S1070328415120039
Аннотация:
Polymer cymantrenecarboxylate complexes of rare-earth metals, [Ln(η2-O2CCym)2(μ-O2CCym)4Ln(ROH)4] n · mSolv (Ln = Nd (I), Gd (II), Dy (III), Ho (IV), Er (V, Va); R = H and Me; Cym = (η5-C5H4)Mn(CO)3; Solv is a solvent molecule), are synthesized by the exchange reactions between LnCl3 and CymCO2K in aqueous-organic media. Two types of coordination sites alternate in the polymer chain: Ln3+ ions coordinating water or methanol molecules and oxygen atoms of the carboxylate anions and Ln3+ ions coordinating oxygen atoms of the bridging and chelate carboxylate anions. In both cases, the coordination number of Ln is 8. Polymer [Dy4(O2CCym)12(HOCH2CH2OH)3.76(H2O)0.48] n · 3nTHF (VI) containing four crystallographically independent Dy3+ ions is obtained when ethylene glycol is used instead of methanol. The thermal behavior of complexes I-V in argon and magnetism of complexes II, III, and IV are studied. Complex III exhibits the properties of a single-molecule magnet with the chain structure (single-chain magnet) (CIF files CCDC 1410905 (I), 1410917 (II), 1410906 (III), 1410911 (IV), 1410918 (V), and 1410934 (VI)). © 2015 Pleiades Publishing, Ltd.
Добавил в систему:
Новоторцев Владимир Михайлович