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Inne
New Fe(II) complexes with Schiff base ligand : synthesis, spectral characterization, magnetic studies and thermal stability.
Autorzy
Rok wydania
2015
Czasopismo
Numer woluminu
102
Strony
609-614
DOI
10.1016/j.poly.2015.10.050
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
New ligand (Z)-2-(1-methyl-2-(pyridine-2-ylmethylene)hydrazinyl)benzoxazole (L) reacts with Fe(II) ions what results in formation of mononuclear complexes of 2:1 stoichiometry (complexes 1 and 2), which crystallize in the rare space group Ia–3d (No. 230) with solvent–acetonitrile–molecules in the crystal structure. Obtained complexes were studied in terms of their properties in the solid state concerning thermal stability and magnetism. N3-donor Schiff base type L is a strong crystal field ligand, therefore both obtained Fe(II) complexes are diamagnetic at room temperature what has been confirmed by magnetic susceptibility measurements and Mössbauer spectroscopy. However, the reversible LS (1A1) ↔ HS (5T2) spin-transitions may be observed starting above room temperature, remaining incomplete even up to 400 K. The thermal stability and electronic reflectance spectra of complexes were determined as well.
Słowa kluczowe
Coordination chemistry, Iron(II) complex, Schiff-base, Magnetism, Mossbauer spectroscopy
Adres publiczny
http://dx.doi.org/10.1016/j.poly.2015.10.050
Strona internetowa wydawcy
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