Mononuclear Fe(III) Schiff Base Complex with Trans-FeO4N2 Chromophore of o-Aminophenol Origin: Synthesis, Characterisation, Crystal Structure, and Spin State Investigation

A new iron(III) complex (Et3NH)2[Fe(L)2](ClO4)·MeOH (1) where H2L = 2-{(E)-[2-hydroxyphenyl)imino]methyl}phenol has been synthesised and characterised by single crystal XRD, elemental analysis and DC magnetic susceptibility measurements. The dianionic ligands L2− coordinate in a tridentate fashion w...

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Bibliographic Details
Published in:Inorganics 2024-06, Vol.12 (6), p.159
Main Authors: Tesfaye, Dawit, Braun, Jonas, Mamo Gebrezgiabher, Kuchár, Juraj, Černák, Juraj, Sani, Taju, Gismelseed, Abbasher, Hochdörffer, Tim, Schünemann, Volker, Anson, Christopher E, Powell, Annie K, Thomas, Madhu
Format: Article
Language:English
Subjects:
Aminophenol
Catalysis
Chromophores
complex
Crystal structure
Hydrogen bonds
Imines
Iron
iron(III)
Ligands
Magnetic measurement
Magnetic permeability
Magnetic susceptibility
Mossbauer spectroscopy
Mössbauer spectroscopy
Nitrogen atoms
o-Aminophenol
Oxidation
Phenolic compounds
Protons
Schiff base
Single crystals
Spectrum analysis
spin state
Structural analysis
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Summary:A new iron(III) complex (Et3NH)2[Fe(L)2](ClO4)·MeOH (1) where H2L = 2-{(E)-[2-hydroxyphenyl)imino]methyl}phenol has been synthesised and characterised by single crystal XRD, elemental analysis and DC magnetic susceptibility measurements. The dianionic ligands L2− coordinate in a tridentate fashion with the Fe(III) through their deprotonated phenolic oxygens and azomethine nitrogen atoms, resulting in a trans-FeO4N2 chromophore. Variable-temperature magnetic measurements were performed between 300 and 5 K under an applied field of 0.1 T and show that 1 is in the high spin state (S = 5/2) over the whole measured temperature range. This is confirmed by Mössbauer spectroscopy at 77 and 300 K.
ISSN:2304-6740
DOI:10.3390/inorganics12060159