Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigations
The asymmetric Schiff base prepared in situ from ethylenediamine and pyridine-2-carboxaldehyde reacts with Fe(ClO4)3·6H2O to form the Fe(II) complex [FeL2](ClO4)2 with L = N,N-diethyl-N′-(pyridin-2-yl)methylene)ethane-1,2-diamine, where the Fe(III) starting material has been unexpectedly reduced to...
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The Royal Society
2025-01-01
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.241334 |
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| author | Dawit Tesfaye Mamo Gebrezgiabher Jonas Braun Taju Sani Sebastien Diliberto Pascal Boulet Nandakumar Kalarikkal Christopher E. Anson Annie K. Powell Madhu Thomas |
| author_facet | Dawit Tesfaye Mamo Gebrezgiabher Jonas Braun Taju Sani Sebastien Diliberto Pascal Boulet Nandakumar Kalarikkal Christopher E. Anson Annie K. Powell Madhu Thomas |
| author_sort | Dawit Tesfaye |
| collection | DOAJ |
| description | The asymmetric Schiff base prepared in situ from ethylenediamine and pyridine-2-carboxaldehyde reacts with Fe(ClO4)3·6H2O to form the Fe(II) complex [FeL2](ClO4)2 with L = N,N-diethyl-N′-(pyridin-2-yl)methylene)ethane-1,2-diamine, where the Fe(III) starting material has been unexpectedly reduced to Fe(II). This complex was characterized by elemental analysis, infrared spectra, single crystal and powder X-ray diffraction measurements, variable temperature DC magnetic measurement and room temperature Mössbauer spectroscopy. The asymmetric ligand L coordinates in a tridentate fashion through its pyridyl, azomethine and amino nitrogen atoms, generating a distorted octahedral geometry around the central metal ion. Variable temperature magnetic studies and a Mössbauer measurement show that the iron is locked in the low spin Fe(II) states. |
| format | Article |
| id | doaj-art-aa95101c57ce40db9ac039ab475dac4b |
| institution | Kabale University |
| issn | 2054-5703 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj-art-aa95101c57ce40db9ac039ab475dac4b2025-01-08T00:06:24ZengThe Royal SocietyRoyal Society Open Science2054-57032025-01-0112110.1098/rsos.241334Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigationsDawit Tesfaye0Mamo Gebrezgiabher1Jonas Braun2Taju Sani3Sebastien Diliberto4Pascal Boulet5Nandakumar Kalarikkal6Christopher E. Anson7Annie K. Powell8Madhu Thomas9Department of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, PO Box 16417, Addis Ababa, EthiopiaDepartment of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, PO Box 16417, Addis Ababa, EthiopiaInstitute of Inorganic Chemistry (AOC), Institute of Nanotechnology (INT) and Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, Karlsruhe 76131, GermanyDepartment of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, PO Box 16417, Addis Ababa, EthiopiaInstitute Jean Lamour (IJL), UMR 7198, CNRS-Université de Lorraine, Nancy 54011, FranceInstitute Jean Lamour (IJL), UMR 7198, CNRS-Université de Lorraine, Nancy 54011, FranceSchool of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, Kerala 686560, IndiaInstitute of Inorganic Chemistry (AOC), Institute of Nanotechnology (INT) and Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, Karlsruhe 76131, GermanyInstitute of Inorganic Chemistry (AOC), Institute of Nanotechnology (INT) and Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, Karlsruhe 76131, GermanyDepartment of Industrial Chemistry, College of Natural and Applied Sciences, Addis Ababa Science and Technology University, PO Box 16417, Addis Ababa, EthiopiaThe asymmetric Schiff base prepared in situ from ethylenediamine and pyridine-2-carboxaldehyde reacts with Fe(ClO4)3·6H2O to form the Fe(II) complex [FeL2](ClO4)2 with L = N,N-diethyl-N′-(pyridin-2-yl)methylene)ethane-1,2-diamine, where the Fe(III) starting material has been unexpectedly reduced to Fe(II). This complex was characterized by elemental analysis, infrared spectra, single crystal and powder X-ray diffraction measurements, variable temperature DC magnetic measurement and room temperature Mössbauer spectroscopy. The asymmetric ligand L coordinates in a tridentate fashion through its pyridyl, azomethine and amino nitrogen atoms, generating a distorted octahedral geometry around the central metal ion. Variable temperature magnetic studies and a Mössbauer measurement show that the iron is locked in the low spin Fe(II) states.https://royalsocietypublishing.org/doi/10.1098/rsos.241334low spin Fe(II) complexasymmetrical Schiff baseMössbauer spectroscopy |
| spellingShingle | Dawit Tesfaye Mamo Gebrezgiabher Jonas Braun Taju Sani Sebastien Diliberto Pascal Boulet Nandakumar Kalarikkal Christopher E. Anson Annie K. Powell Madhu Thomas Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigations Royal Society Open Science low spin Fe(II) complex asymmetrical Schiff base Mössbauer spectroscopy |
| title | Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigations |
| title_full | Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigations |
| title_fullStr | Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigations |
| title_full_unstemmed | Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigations |
| title_short | Unexpected stability of the iron(II) complex by an asymmetrical Schiff base from Fe(III): structure, magnetic and Mössbauer investigations |
| title_sort | unexpected stability of the iron ii complex by an asymmetrical schiff base from fe iii structure magnetic and mossbauer investigations |
| topic | low spin Fe(II) complex asymmetrical Schiff base Mössbauer spectroscopy |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.241334 |
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