Synthesis, structure and magnetic properties of binuclear 3d-metal complexes of new 3-(2-pyridyl)-6-phenyl-1,2,4-triazine derivative

Alexey I. Nemytov, Irina A. Utepova, Mikhail A. Kiskin, Nikolay N. Efimov, Matvey V. Fedin, Igor L. Eremenko, Alexandra A. Musikhina, Pavel A. Slepukhin, Oleg N. Chupakhin

Research output: Contribution to journalArticlepeer-review

Abstract

Novel non-symmetric tridentate N,N,O-ligand was obtained by direct substitution of hydrogen in 3-(2-pyridyl)-6-phenyl-1,2,4-triazine. Three binuclear cobalt(II), copper(II) and zinc(II) carboxylate complexes of 3-(2-pyridyl)-5-(2-hydroxynaphthalen-1-yl)-6-phenyl-1,2,4-triazine anion (HL1), [M2(Piv)2(L1)2] (M = Co, Cu, Zn; Piv = Me3CCO2-), were synthesized and characterized by elemental analysis and IR spectroscopy. The complexes structures were determined by single crystal X-ray diffraction analysis. The magnetic property studies indicate that cobalt(II) complex exhibits weak ferromagnetic coupling (J = 1.2(1) cm−1) between two high-spin Co(II) ions linked by double μ-O phenoxo bridges. According to magnetic property studies as well as X- and Q-band EPR spectra for copper(II) complex, the specific structure of the Cu2O2 fragment leads to the predominance of dipole–dipole interactions and weak antiferromagnetic coupling (J = -3.64(3) cm−1).

Original languageEnglish
Article number114901
Number of pages8
JournalPolyhedron
Volume193
DOIs
Publication statusPublished - 1 Jan 2021

Keywords

  • 1,2,4-triazine
  • Binuclear complexes
  • Magnetic properties
  • Nucleophilic substitution of hydrogen
  • BEHAVIOR
  • CU(II)
  • MCF-7
  • ZN(II)
  • CO(II)
  • NI(II)
  • ANTICANCER ACTIVITY
  • LIGANDS
  • TRIMETHYLACETATE COMPLEXES
  • BSA-BINDING

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