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Dinuclear iron and manganese complex with an asymmetric ligand
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström. Uppsala University. (Anders Thapper group)ORCID iD: 0000-0002-5724-4765
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström.
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(English)Manuscript (preprint) (Other academic)
Abstract [en]

Three complexes using the same asymmetric and dinucleating ligand DPCPMP (2-(N-(3-((bis((pyridin-2-yl)methyl)amino)methyl)-2-hydroxy-5-methylbenzyl)-N-((pyridin-2-yl)methyl)amino acetic acid) have been synthesised. The ligand contains one pocket with three nitrogen donors and another pocket with two nitrogen donors and one oxygen donor. The complexes were containing two iron ions ([Fe2(DPCPMP)(CH3COO)2]), two manganese ions ([Mn2(DPCPMP)(CH3COO)2]) or one iron and one manganese ion ([FeMn(DPCPMP)(CH3COO)2]) mimicing the metal content in the three different subclasses of class I ribonucleotide reductases. The asymmetric ligand was chosen in order to investigate if a small alteration of the coordiantion environment (pyridine versus carboxylate donor) could steer the metal ions in the heterobimetallic complex into a specific pocket of the ligand or not. The complexes have been characterized and investigated with mass spectrometry, electrochemistry, IR, UV-vis, EPR and Mössbauer spectroscopy. From CV and Mössbauer spectroscopy of the heterobimetallic complex it is proposed that the asymmetry is not able to steer the metals into different pockets and instead a mixture of two different isomers is created in the synthesis.

Keywords [en]
Class I RNR, Biomimetics, Binuclear ligand, Iron, Manganese, asymmetric ligand
National Category
Inorganic Chemistry
Research subject
Chemistry; Chemistry with specialization in Molecular Biomimetics
Identifiers
URN: urn:nbn:se:uu:diva-396219OAI: oai:DiVA.org:uu-396219DiVA, id: diva2:1370705
Projects
Iron manganese complexes
Note

Soon be published

Available from: 2019-11-17 Created: 2019-11-17 Last updated: 2019-11-17

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