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The Use of Coordination Chemistry Principles to Control Aggregation Processes of Metal Ions

Nayak, Sanjit

Abstract:

The research presented in this thesis is based on the use coordination chemistry principles to control aggregation process of metal ions. Two important areas, which are currently being intensely researched, were chosen. Firstly, controlled aggregation of paramagnetic metal ions to produce cooperatively coupled molecule-based magnets was studied. In Chapter 3, the potential ways of producing single-molecule magnets (SMMs) using polyols as ligands and manganese and iron ions as the paramagnetic centers were investigated. SMMs are molecules which can store magnetic information, which requires both uniaxial anisotropy and non-zero overall spin. In contrast to most Mn and Fe clusters reported in the literature, it was found that the polyols tend to favor the formation of regular polyhedral arrangements of the metal ions. In Chapter 4 one polyol was chosen in order to survey the properties of a family of lanthanide chain compounds. Here the aim was to discover whether single-chain magnets, SCMs, based on 4f metals could be produced. In order to produce the chains, benzoate was employed to provide bridges. The 4f metal ions were chosen because of their inherent spins and anisotropies. ... mehr


Volltext §
DOI: 10.5445/IR/1000009969
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Publikationstyp Hochschulschrift
Publikationsjahr 2008
Sprache Englisch
Identifikator urn:nbn:de:swb:90-99695
KITopen-ID: 1000009969
Verlag Universität Karlsruhe (TH)
Art der Arbeit Dissertation
Fakultät Fakultät für Chemie und Biowissenschaften (CHEM-BIO)
Institut Institut für Anorganische Chemie (AOC)
Prüfungsdaten 24.10.2008
Schlagwörter Coordination chemistry, molecule-based magnets, single-molecule magnet, cluster, polyol, single-chain magnet, biomineralization, polycarboxylate
Referent/Betreuer Powell, A.
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