Abstract
The complexes Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) with 3-(anilinomethylene)-2-methoxychroman-4-one were synthesized and characterized by elemental analysis, conductivity, infrared and UV–Vis spectroscopy, 1H NMR, X-ray diffraction patterns, magnetic susceptibility and thermal analysis (TG/DTG/DSC). The X-ray analysis shows that the studied compounds crystallize in the triclinic crystal system and they are no isostructural complexes. The unit cell parameters for these chelates were presented. The molecules of solvent are in the outside coordination sphere of the complexes. The chelates have different thermal stability and they decompose in air atmosphere in three steps. The coordination of metal ions is through nitrogen atom from ligand and oxygen atom present in 4-position of γ-pyrone. The studied chelates have electrolyte (1:1) and non-electrolyte nature. They are high-spin complexes with octahedral coordination and the weak ligand fields.
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Dziewulska-Kułaczkowska, A. Thermal and spectral studies of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes with 3-(anilinomethylene)-2-methoxychroman-4-one. J Therm Anal Calorim 109, 7–15 (2012). https://doi.org/10.1007/s10973-011-1387-y
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DOI: https://doi.org/10.1007/s10973-011-1387-y