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INORGANIC AND ANALYTICAL CHEMISTRY |
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RESEARCH GROUP OF PRIV. - DOZ. DR. U. DIEFENBACH |
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Institute of
Chemistry |
FURTHER INFORMATION |
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Research |
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Group Members |
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Homepage |
KEYWORDS |
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Phosphazenes, Inorganic Heterocycles, Inorganic Polymers, Multifunktional Ligands, Ion Selektive Extraction, Ion Exchange, Polymeric Depots for cis-Platinum. |
ABSTRACT |
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Functionalization of inorganic rings and polymers can be achieved by introduction of selected groups. The attachment of nitrogen or sulfur donor groups yields multifunctional ligands for the synthesis of metal rich compounds or the stabilization of metal clusters. Furthermore, studies of metal complexes of the small molecule cyclophosphazenes as model compounds allow for deeper understanding of the coordination compounds formed by related polyphosphazenes. The synthesis of novel polyphosphazenes and their coordination chemistry is focused on the extraction of heavy metals and the development of new ion exchange resins. Some polyphosphazenes with nitrogen donor groups show preferred uptake of copper in the presence of cobalt or nickel. Others form platinum complexes and are water degradable and might therefore be interesting as depots for cis-platinum. The small molecules are characterized by IR and NMR spectroscopy, mass spectrometry and elemental analysis. Additionally, single crystal x ray diffraction methods allow detailed structure analyses. Structures and properties of the polymers are investigated by the use of IR and NMR spectroscopy, GPC, DSC, and TGA. Metal contents of macromolecules can be determined by AAS and ICP measurements. |
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