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Journal of Structural Chemistry

, Volume 60, Issue 10, pp 1635–1647 | Cite as

Methoxy-Substituted Transition Metal β-Diketonates: Synthesis and Properties

  • S. Urkasym kyzyEmail author
  • V. V. Krisyuk
  • A. E. Turgambaeva
  • I. A. Baidina
  • V. Yu. Komarov
  • E. V. Korotaev
  • I. V. Korolkov
Article
  • 6 Downloads

Abstract

Novel volatile complexes of Ni(II), Co(II), Mn(II), Zn(II) with methoxy-substituted β-diketonate ligands L = (CH3)2C(OCH3)-CO-CH-CO-C(CH3)3 and LF = (CH3)2C(OCH3)-CO-CH-CO-CF3 are obtained. The novel compounds are identified by a complex of techniques, including CHF elemental, mass spectrometric, and NMR spectroscopic analyses. According to the X-ray crystallographic analysis data, in the crystals, NiL2 and ZnL2 are asymmetric binuclear complexes in which metal atoms have a different coordination environment composed of ligand oxygen atoms (c.n.= 6 and 5) and are bridged by oxygen atoms, both chelate and from one of the methoxy groups. The mixed-ligand complex [NiL(dpm)]2 (dpm = dipivaloylmethanate: 2,2,6,6-tetramethyl-3,5-heptandionate) has a similar binuclear structure. It is found that complexes with non-fluorinated ligands pass to the gas phase as monomers whereas fluorine-containing complexes pass as dimers. The compounds are paramagnetic, except zinc complexes. In the binuclear complexes based on non-fluorinated ligands, a ferromagnetic exchange interaction of magnetic moments is observed while for fluorine-containing ligands it is antiferromagnetic.

Keywords

transition metal β-diketonates crystal structure mixed-ligand complexes thermal properties molecular magnets 

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Conflict of Interests

The authors declare that they have no conflict of interests.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • S. Urkasym kyzy
    • 1
    Email author
  • V. V. Krisyuk
    • 1
  • A. E. Turgambaeva
    • 1
  • I. A. Baidina
    • 1
  • V. Yu. Komarov
    • 1
  • E. V. Korotaev
    • 1
  • I. V. Korolkov
    • 1
  1. 1.Nikolaev Institute of Inorganic Chemistry, Siberian BranchRussian Academy of SciencesNovosibirskRussia

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