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

Dawit Tesfaye; Jonas Braun; Mamo Gebrezgiabher; Juraj Kuchár; Juraj Černák; Taju Sani; Abbasher Gismelseed; Tim Hochdörffer; Volker Schünemann; Christopher E. Anson; Annie K. Powell; Madhu Thomas

doi:10.3390/inorganics12060159

Inorganics (Jun 2024)

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

Dawit Tesfaye,
Jonas Braun,
Mamo Gebrezgiabher,
Juraj Kuchár,
Juraj Černák,
Taju Sani,
Abbasher Gismelseed,
Tim Hochdörffer,
Volker Schünemann,
Christopher E. Anson,
Annie K. Powell,
Madhu Thomas

Affiliations

Dawit Tesfaye: Department of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
Jonas Braun: Institute of Inorganic Chemistry (AOC), Institute of Nanotechnology (INT) and Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131 Karlsruhe, Germany
Mamo Gebrezgiabher: Department of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
Juraj Kuchár: Department of Inorganic Chemistry, Institute of Chemistry, P. J. Šafárik University in Košice, Moyzesova 11, 041 54 Košice, Slovakia
Juraj Černák: Department of Inorganic Chemistry, Institute of Chemistry, P. J. Šafárik University in Košice, Moyzesova 11, 041 54 Košice, Slovakia
Taju Sani: Department of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
Abbasher Gismelseed: Department of Physics, College of Science, Sultan Qaboos University, Al-Khod P.O. Box 36, Oman
Tim Hochdörffer: Department of Physiscs, University of Kaiserlautern-Landau, Erwin-Schrödinger-Strasse 46, 67663 Kaiserlautern, Germany
Volker Schünemann: Department of Physiscs, University of Kaiserlautern-Landau, Erwin-Schrödinger-Strasse 46, 67663 Kaiserlautern, Germany
Christopher E. Anson: Institute of Inorganic Chemistry (AOC), Institute of Nanotechnology (INT) and Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131 Karlsruhe, Germany
Annie K. Powell: Institute of Inorganic Chemistry (AOC), Institute of Nanotechnology (INT) and Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131 Karlsruhe, Germany
Madhu Thomas: Department of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia

DOI: https://doi.org/10.3390/inorganics12060159
Journal volume & issue: Vol. 12, no. 6
p. 159

Abstract

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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.

Published in Inorganics

ISSN: 2304-6740 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Inorganic chemistry
Website: http://www.mdpi.com/journal/Inorganics

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