Browsing Fakultät für Chemie (inkl. GAUSS) by Advisor & Referee "Meyer, Franc Prof. Dr."
Now showing items 21-40 of 125
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Activation and transformation of small molecules at a bimetallic β-diketiminato nickel platform
(2022-03-25)This dissertation focuses on the activation and transformation of small molecules by a dinuclear nickel platform. A series of nickel-complexes based on a binucleating bis(tridentate) ligand that consists of two ß-diketiminato ... -
Bioinspired Iron-Carbene Models of Heme and Non-Heme Enzymes: Electronic Structure and HAA Reactivity
(2022-03-15)The fast depletion of non-renewable energy sources requires modern chemists to develop new industrial processes that are more efficient and environmentally sustainable. In this framework, the functionalization (e.g. ... -
Hyperpolarisierte Kontrastmittel in der Magnetresonanz
(2022-02-24)Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are powerful techniques with applications ranging from chemical analysis to medical diagnostics. However, they are limited by their low sensitivity which ... -
Metal-Mediated Coordination Cages: Endohedral Functionalization and Oligonucleotide Embedding
(2022-02-17)Supramolecular structures have become a popular motif in order to design higher order constructs from smaller organic building blocks, which are hold together by non-covalent bonds, such as hydrogen bonds, ion-ion, ion-dipole ... -
Molecular Ruthenium based Water Oxidation Catalysts and their Immobilization on Electrode Surfaces
(2022-02-11)Ruthenium complexes are valuable in the field of catalytic water oxidation. Their stability and molecular nature allow for detailed mechanistic insight, and they can be synthetically modified to enhance their activity. ... -
Chelate Ligands for the Stabilisation of Low-Valent Main Group Compounds
(2021-09-28)Reviewing the achievements in Group 13 metal complexes over the last decades, the main area of research is emerging to the development and utilisation of low-valent aluminium compounds and their heavier homologues. This ... -
Bioinspired Dinuclear Copper Complexes for Small Molecule Activation
(2021-09-06)This thesis focuses on the activation of small molecules by dinuclear copper complexes. Initially, isolation of copper/oxygen intermediates on the basis of a non-symmetric pyrazolate/tacn scaffold was investigated. The ... -
Small Molecule Activation with Dinuclear Cobalt Complexes based on the Two-In-One Pincer Ligands
(2021-06-24)Dinuclear complexes based on this two-in-one pincer ligand scaffold have exhibited fascinating magnetic properties and promise high reactivity in catalysis and small molecule activation. In this thesis, the main objective ... -
Bioinspirierte Sauerstoffaktivierung an Bis(benzimidazolyl)basierten Kupfer(I)komplexen und Spektroskopische Studien an Bis(benzoxazolyl) Kupfer(II)-Verbindungen
(2021-05-04)The active sites of type III copper proteins (i.e. tyrosinase) provide inspiration for the development of copper complexes for the activation of O2 as well as for catalytic oxidation and oxygenation reactions of CH substrates. ... -
Transformations of Energy-Related Small Molecules at Dinuclear Complexes
(2021-02-05)The urgent need for the development of carbon-neutral energy conversion schemes has inspired chemists worldwide to investigate catalytic water splitting using sunlight as the energy source. A key component for the preparation ... -
Proton Coupled Electron Transfer at Heavy Metal Sites
(2021-01-14)Terminal, late transition metal, oxo complexes are pivotal intermediates in oxygenation chemistry. This thesis describes the synthesis and full characterisation of an open-shell terminal oxo complex of iridium from the ... -
Reductive Binding of C‒O and Nitro Substrates at a Pyrazolate-Bridged Preorganized Dinickel Scaffold
(2020-12-15)The transition-metal mediated conversion of C‒O multiple bond containing substrate plays an important role in various catalytic processes. Initially, this work investigates the alkylation of a pyrazolate-bridged preorganized ... -
N2 Splitting and Functionalization in the Coordination Sphere of Tungsten
(2020-12-02)The splitting and functionalization of N2 remains one of the most challenging reactions in coordination chemistry. In this thesis a series of four isostructural end-on N2 bridged ditungsten-PNP-pincer complexes are synthesized ... -
Mechanistic Investigations of Metal-Metal Cooperativity in Dinickel Complexes and Iron/Cobalt Prussian Blue Analogues
(2020-06-12)This dissertation focuses on two polymetallic systems exhibiting two different phenomena of Metal-Metal Cooperativity in the form of intramolecular C-H(sp2) activation and Charge-Transfer-Induced Spin Transition (CTIST). ... -
Novel Cationic Sulfur Reagents and their Application in Electrophilic Group-Transfer Reactions
(2020-06-08)The two major research achievements of this work are the development of novel sulfur-based electrophilic transfer reagents based on pyridinium, as well as the extension of the reactivity of already established imidazolium ... -
Designing New Heterometallic [2 x 2] Grids using Pyrazolate-bridged Ligands
(2020-02-18)This dissertation focusses on designing new heterometallic [2 x 2] grids based on pyrazolate-bridged ligands exhibiting interesting magnetic and redox properties. To date, numerous homometallic metallogrids have been ... -
From Copper to Gold: Identification and Characterization of Coinage-Metal Ate Complexes by ESI Mass Spectrometry and Gas-Phase Fragmentation Experiments
(2020-01-09)Organocuprates are important reagents with numerous applications in preparative organic chemistry, which has led to extensive investigations regarding their molecular composition. However, while lithium organocuprates have ... -
Rhenium and Osmium PNP Pincer Complexes for Nitrogen Fixation and Nitride Transfer
(2019-12-19)Activation, splitting and fixation of dinitrogen remains one of the most challenging reactions in coordination chemistry. In this thesis, osmium and rhenium complexes based on a PNP pincer ligand are synthesized and ... -
Dinuclear Copper and Nickel Complexes of New Multidentate N-heterocyclic Carbene Ligands: Structures, Dynamics and Reactivity
(2019-12-18)The present Ph.D. thesis is divided in two parts and describes N-heterocyclic carbene complexes of copper and nickel, their structures, dynamics in solution and reaction patterns. Part I deals thematically with copper(I) ... -
Dinickel Complexes of the "Two-In-One" Pincer scaffold
(2019-11-11)Bringing two metal ions in close proximity offers interesting perspectives for cooperative activation and catalytic transformation of substrates. Ditopic pyrazolate-based bridging ligands are known to represent valuable ...