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Syntheses, Structures and Properties of FeIII-LnIII Complexes using N-substituted Diethanolamine Ligands

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Syntheses, Structures and Properties of FeIII-LnIII Complexes using N-substituted Diethanolamine Ligands

Sihuai Chen (Autor)

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Inhaltsverzeichnis, PDF (1,1 MB)
Leseprobe, PDF (390 KB)

ISBN-13 (Printausgabe) 9783954048809
ISBN-13 (E-Book) 9783736948808
Sprache Englisch
Seitenanzahl 162
Umschlagkaschierung matt
Auflage 1. Aufl.
Erscheinungsort Göttingen
Promotionsort Karlsruhe
Erscheinungsdatum 23.12.2014
Allgemeine Einordnung Dissertation
Fachbereiche Chemie
Anorganische Chemie
Schlagwörter Single Molecule Magnet (SMM), Coordination Cluster, Iron, Lanthanide, Diethanolamine, Solvothermal Synthesis, Mössbauer Spectroscopy
Beschreibung

In this thesis, N-substituted diethanolamine ligands have been employed in the syntheses of heterometallic FeIII-LnIII clusters. The reactions of a preformed [FeIII3O]7+ benzoate triangle, LnIII salts and the ligands in different solvents under normal or solvothermal conditions lead to several mixed FeIII-LnIII species with different topologies. Furthermore, new species stabilized under solvothermal conditions can be obtained via a solvothermal treatment of the FeIII-LnIII compounds which result from reactions conducted under normal conditions. The resulting compounds were structurally analyzed by single-crystal X-ray crystallography and X-ray powder diffraction. The magnetic properties and spectroscopic studies were investigated using magnetic susceptibility measurements and Mössbauer spectroscopy. Magnetic studies reveal that three analogous hexanuclear {FeIII4DyIII2} compounds as well as a {FeIII7DyIII4} compound display single molecule magnet behavior.