Mononuclear Fe(III) Schiff Base Complex with Trans-FeO4N2 Chromophore of o-Aminophenol Origin: Synthesis, Characterisation, Crystal Structure, and Spin State Investigation
Tesfaye, Dawit; Braun, Jonas
1; Gebrezgiabher, Mamo; Kuchár, Juraj; Černák, Juraj; Sani, Taju; Gismelseed, Abbasher; Hochdörffer, Tim; Schünemann, Volker; Anson, Christopher E. 1; Powell, Annie K. 1; Thomas, Madhu
1 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)
1; Gebrezgiabher, Mamo; Kuchár, Juraj; Černák, Juraj; Sani, Taju; Gismelseed, Abbasher; Hochdörffer, Tim; Schünemann, Volker; Anson, Christopher E. 1; Powell, Annie K. 1; Thomas, Madhu1 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)
Abstract:
A new iron(III) complex (Et$_3$NH)$_2$[Fe(L)$_2$](ClO$_4$)·MeOH (1) where
H$_2$L = 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 L$^2$− coordinate in a tridentate fashion with the Fe(III) through their deprotonated pheno-
lic oxygens and azomethine nitrogen atoms, resulting in a trans-FeO$_4$N$_2$ 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.
H$_2$L = 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 L$^2$− coordinate in a tridentate fashion with the Fe(III) through their deprotonated pheno-
lic oxygens and azomethine nitrogen atoms, resulting in a trans-FeO$_4$N$_2$ 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.
| Zugehörige Institution(en) am KIT | Institut für QuantenMaterialien und Technologien (IQMT) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsjahr | 2024 |
| Sprache | Englisch |
| Identifikator | ISSN: 2304-6740 KITopen-ID: 1000172317 |
| Erschienen in | Inorganics |
| Verlag | MDPI |
| Band | 12 |
| Heft | 6 |
| Seiten | Art.-Nr.: 159 |
| Vorab online veröffentlicht am | 03.06.2024 |
| Nachgewiesen in | Scopus Dimensions Web of Science |