Synthesis and Reactivity of Iron(II) Complexes with a New Tripodal Imine Ligand

A new tripodal imine ligand tris(2‐(propan‐2‐ylideneamino)ethyl)amine (imine3tren) was prepared in order to stabilize high valent iron‐oxido complexes. Iron complexes were synthesized in template reactions from iron(II) salts, tris(2‐aminoethyl)amine (tren) and acetone. Due to the reversibility of t...

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Bibliographic Details
Published inIsrael journal of chemistry Vol. 60; no. 10-11; pp. 999 - 1003
Main Authors Will, Janine, Schneider, Lars, Becker, Jonathan, Becker, Sabine, Miska, Andreas, Gawlig, Christopher, Schindler, Siegfried
Format Journal Article
LanguageEnglish
Published Haifa Wiley Subscription Services, Inc 01.10.2020
Subjects
Acetone
Chemical synthesis
Coordination compounds
Hydrogen peroxide
Iron
Ligands
Oxidation
Oxygen Activation
Template Reaction
Tripodal Ligand
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Summary:A new tripodal imine ligand tris(2‐(propan‐2‐ylideneamino)ethyl)amine (imine3tren) was prepared in order to stabilize high valent iron‐oxido complexes. Iron complexes were synthesized in template reactions from iron(II) salts, tris(2‐aminoethyl)amine (tren) and acetone. Due to the reversibility of the imine formation, complexes with different ligands were obtained depending on the reaction conditions. Three complexes, [Fe(imine3tren)(OAc)2] (1), [Fe(imine3tren)(OAc)]OTf (2) and [(imine3tren)2Fe2(F)2](SbF6)2 (3), could be synthesized and structurally characterized. However, reactions with hydrogen peroxide, iodosobenzene or ozone did not lead to any kind of “oxygen adduct” complex that could be spectroscopically observed. Iron complexes [Fe(imine3tren)(OAc)2], [Fe(imine3tren)(OAc)]OTf (shown) and [(imine3tren)2Fe2(F)2](SbF6)2,with a new tripodal imine ligand could be synthesized and structurally characterized.
ISSN:0021-2148
1869-5868
DOI:10.1002/ijch.201900120