Russian Chemical Bulletin

, Volume 53, Issue 1, pp 80–85

Syntheses and crystal structures of supramolecular compounds of tetranuclear ZrIV and HfIV aqua hydroxo complexes with macrocyclic cavitand cucurbituril

  • T. V. Mit"kina
  • O. A. Gerasko
  • M. N. Sokolov
  • D. Yu. Naumov
  • V. P. Fedin


Slow evaporation of hydrochloric acid solutions of zirconium(iv) or hafnium(iv) oxochlorides and cucurbituril in air afforded compounds with composition [M4(OH)8(H2O)16]Cl8·(C36H36N24O12)·16H2O, where M = Zr (1) or Hf (2). According to the X-ray diffraction data, complexes 1 and 2 are isostructural. Their crystal structures can be described as packings of polymer chains consisting of alternating cucurbituril molecules and tetranuclear cations [M4(OH)8(H2O)16]8+ linked to each other via an extensive network of hydrogen bonds. Compound 2 is the first structurally characterized tetranuclear hafnium aqua complex.

aqua complexes zirconium hafnium cucurbituril supramolecular compound crystal structure X-ray diffraction analysis 


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Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • T. V. Mit"kina
    • 1
  • O. A. Gerasko
    • 1
  • M. N. Sokolov
    • 1
  • D. Yu. Naumov
    • 1
  • V. P. Fedin
    • 1
  1. 1.A. V. Nikolaev Institute of Inorganic ChemistrySiberian Branch of the Russian Academy of SciencesNovosibirskRussian Federation

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