• Yuliya M. Davydenko Taras Shevchenko National University of Kiev, Ukraine
  • Viktoriya A. Vitske Taras Shevchenko National University of Kiev, Ukraine
  • Vadim A. Pavlenko Taras Shevchenko National University of Kiev, Ukraine
  • Matti Haukka University of Joensuu, Finland
  • Oleksandr S. Vynohradov Taras Shevchenko National University of Kiev, Ukraine
  • Igor O. Fritsky Taras Shevchenko National University of Kiev, Ukraine



піразоли; координаційні полімери; РСтА; супрамолекулярна хімія


A series of new coordination compounds [MnL2·4H2O]n (1), [CoL2·4H2O]n (2), [NiL2·4H2O]n (3), [CuL2·4H2O]n (4), [ZnL2·4H2O]n (5) based on (3,5-dimethyl-1H-pyrazole-4-yl)-acetic acid (L) has been synthesized. The synthesis of L is also described. Binding mode of L in 1-5 was determined via IR spectroscopy. pH-dependent complex formation study between 3d-metal cations and L was carried out in solutions that allowed to determine optimal synthetic conditions and to approximately estimate the coordination environment of central atoms. Synthetic approaches to the preparation of coordination compounds were developed and crystalline compounds 1-5 were isolated. Isostructurality of 1-5 was identified by powder x-ray diffraction analysis. Structures 2 and 4 were determined via single crystal x-ray diffraction. Obtained compounds consist of tetranuclear fragments M4L4 and water molecules. The latter participate in the formation of intramolecular and intermolecular hydrogen bonds. Thereby, 1-5 possess the polymeric structure of 3D diamond framework type. Their frameworks contain cavities with a diameter of 4´12 Å.


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Physical and inorganic chemistry