Polymer lanthanide cymantrenecarboxylates

Polymer lanthanide cymantrenecarboxylates 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)). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Coordination Chemistry Springer Journals
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Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Chemistry; Physical Chemistry; Inorganic Chemistry
ISSN
1070-3284
eISSN
1608-3318
D.O.I.
10.1134/S1070328415120039
Publisher site
See Article on Publisher Site

Abstract

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)).

Journal

Russian Journal of Coordination ChemistrySpringer Journals

Published: Nov 22, 2015

References

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