Russian Journal of Coordination Chemistry

, Volume 45, Issue 11, pp 799–803 | Cite as

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

  • S. S. ShapovalovEmail author
  • O. G. Tikhonova
  • M. O. Grigor’eva
  • I. V. Skabitskii
  • N. P. Simonenko


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).


lanthanide samarium europium praseodymium norzoanemonine X-ray diffraction analysis 



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).


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


The authors declare that they have no conflict of interest.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • S. S. Shapovalov
    • 1
    Email author
  • O. G. Tikhonova
    • 1
  • M. O. Grigor’eva
    • 1
  • I. V. Skabitskii
    • 1
  • N. P. Simonenko
    • 1
  1. 1.Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of SciencesMoscowRussia

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