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Lanthanide Complexes Based on 1,3-Dimethylimidazolium-4-Carboxylate: Syntheses and Structures

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Abstract

The reactions of the norzoanemonine zwitterion, 1,3-dimethylimidazolium-4-carboxylate (L), with praseodymium(III), samarium(III), and europium(III) chlorides afford crystals of two types: the isostructural binuclear complexes [Ln2(μ-C6H8N2O2)4(HOCH3)4(H2O)4]Cl6 (Ln = Pr(III) (I) and Eu(III) (II)) and the dimeric samarium complex [Sm2(μ-C6H8N2O2)4(C6H8N2O2)2(H2O)5(OCH3)]Cl5 (III), which are characterized by X-ray diffraction analysis and IR spectroscopy. In complexes IIII (CIF files CCDC nos. 1912829 (I), 1912830 (II), 1912831 (III), the metal atoms are bound by four bridging L molecules without forming the metal–metal bond (the M···M distances are 4.595 Å in I, 4.4637 Å in II, and 4.584 Å in III).

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ACKNOWLEDGMENTS

The studies were carried out at the Center for Collective Use of Physical Methods of Investigation at the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences).

Funding

This work was supported by the Russian Science Foundation, project no. 17-73-10503.

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Correspondence to S. S. Shapovalov.

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The authors declare that they have no conflict of interest.

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Translated by E. Yablonskaya

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Shapovalov, S.S., Tikhonova, O.G., Grigor’eva, M.O. et al. Lanthanide Complexes Based on 1,3-Dimethylimidazolium-4-Carboxylate: Syntheses and Structures. Russ J Coord Chem 45, 799–803 (2019). https://doi.org/10.1134/S1070328419110071

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  • DOI: https://doi.org/10.1134/S1070328419110071

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