Synthesis of iron(II) complexes with asymmetric N₂O₂ coordinating Schiff base-like ligands and their spin crossover properties

Abstract

The synthesis of new Schiff base-like ligands with asymmetric substituents pattern and their iron complexes with pyridine as axial ligand is described. Two of the ligands and one of the iron(II) complexes were characterized by single crystal X-ray structure analysis. One of the the iron(II) complexes shows spin crossover behavior while the others remain in the high spin state. The influence of the reduced symmetry of the ligand on the properties of the complexes is discussed.

Graphical abstract

Keywords

iron / Schiff base-like ligands / magnetism / spin crossover / X-ray structures

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Acknowledgements

The experiments described in this work were done at the LMU München while data treatment and writing of the manuscript was done at the University of Bayreuth. We gratefully acknowledge support from both universities.

Electronic Supplementary Material

Supplementary material is available in the online version of this article at https://doi.org/10.1007/s11705-018-1753-4 and is accessible for authorized users.

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