Iron(III) Complexes Based on N -Benzylidene-2-Hydroxy-3,5-Di- tert -Butylaniline

摘要: Five-coordinate iron(III) complexes, (ImPh)2FeX (X = Cl (I), Br (II), I (III), N3 (IV)) containing two bidentate Schiff bases (N-benzylidene-2-hydroxy-3,5-di-tert-butylaniline (ImPh)H) and a halogen atom/azide group in the coordination sphere were synthesized characterized detail. According to magnetic susceptibility measurements for polycrystalline samples of I–IV Mossbauer spectroscopy data 2–300 K range, complexes contain high-spin metal ion (HS Fe3+, d5, SFe 5/2). Compounds are stable crystalline state absence oxygen or air moisture; however, solution, they undergo symmetrization, resulting formation tris-ligand complex (ImPh)3Fe (V), which was also by reaction (ImPh)H FeCl3 (3 : 1). Unlike five-coordinate I–IV, six-coordinate V contains low-spin (LS 1/2). The molecular structure determined X-ray diffraction (CIF file CCDC no. 1996527).