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Two-in-one Pincer Type Ligands and Their Metal Complexes for Catalysis

Two-in-one Pincer Type Ligands and Their Metal Complexes for Catalysis

by Alexander Gers-Barlag
Doctoral thesis
Date of Examination:2016-11-24
Date of issue:2017-02-14
Advisor:Prof. Dr. Franc Meyer
Referee:Prof. Dr. Franc Meyer
Referee:Prof. Dr. Sven Schneider
Referee:Prof. Dr. Manuel Alcarazo
Referee:Prof. Dr. Konrad Koszinowski
Referee:Dr. Alexander Breder
Referee:Dr. Selvan Demir
crossref-logoPersistent Address: http://dx.doi.org/10.53846/goediss-6126

 

 

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Abstract

English

The synthesis, characterization and first applications in catalysis of dinuclear metal complexes of the new Two-in-one pincer ligand scaffold are described in this work. Zinc(II) compexes were used to compare structural and electronical features of two derivatives of the ligand system. Reactivity studies revealed a broad range of reactions for a cobalt(II) complex, although detailed analysis of the reaction products was not possible so far. Furthermore, several rhodium(I) complexes have been synthesized and fully characterized. For a rhodium(I) carbonyl complex a dearomatization sequence was found for the first time in dinuclear, pyridine based pincer complexes. Mechanistic aspects of the hydrogenation of terminal phenyl acetylenes by a rhodium(I) acetonitrile complex were investigated. First results were obtained for the hydrogenation of carbon dioxide to formate salts in the presence of base.
Keywords: pincer ligands; dinuclear complexes; catalysis; metal ligand cooperativity; activation of small molecules; hydrogenation
 

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