Dokumente Fakultät für Chemie (inkl. GAUSS) nach Gutachter "Schneider, Sven Prof. Dr."
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A Dinuclear Dihydride Complex for Bimetallic Reductive Activation and Transformation of a Range of Inert Substrates
(2018-03-19)In this thesis, a dinickel(II) dihydride complex was used for small molecules activation, such as H2, O2, N2, S8, CO and so on. Here, we present the results of these works and analysis these results by various spectroscopies. -
Application of Asymmetric Gold-Catalyzed Hydroarylation in the Enantioselective Synthesis of Helicenes
(2022-04-07)A novel family of electron deficient, α-cationic ligands was synthesized, combining a chiral TADDOL-backbone with an electron withdrawing 1,2,3-triazolium moiety. Coordination to Au(I) gave the respective catalysts. Both ... -
Bimetallic Copper Complexes for Bioinspired Dioxygen Activation and Catalytic Water Oxidation
(2018-01-26)In this thesis a pyrazolate based dicopper(I) complex featuring a constrained substrate binding pocket was reacted with dioxygen to form a dicopper(II) peroxo complex which shows the peroxide anion in an unusual cis-µ-η1:η1 ... -
Binary Planet–Satellite Nanostructure Using RAFT Polymer
(2020-08-06)This thesis provides a series of strategies to fabricate hierarchically arranged nanohybrids from distinct nanoparticles using polymer linkers. Benefit from the controlled reversible-deactivation radical polymerization ... -
Bioinspired dinuclear copper complexes for catalytic oxidation of phenolic substrates
(2018-10-23)Inspired by tyrisonase, a dicopper enzyme catalyzing the aerobic oxidation of phenols, highly preorganized bioinspired dinuclear copper complexes with imidazole ligation were synthesized and their reaction with phenolic ... -
Charge Density Analysis of Low-Valent Tetrels
(2016-02-11)This thesis deals with the bonding situation of low valent tetrels. More precisely an experimental charge density study of the silylone (cAACcy)2Si was carried out in order to investigate whether the bonding in this new ... -
Cobalt-Catalyzed Olefin Hydrogenation
(2023-08-04)This thesis describes the synthesis and isolation of the cobalt complexes, using PNP-pincer ligand system with tert-butyl substituents. The neutral and cationic cobalt hydrides were further probed in olefin hydrogenation ... -
Cooperative (De-)Hydrogenation of Small Molecules
(2019-01-25)Ammonia borane dehydrocoupling to mainly linear polyaminoborane is reported at room temperature using a bifunctional iron catalyst. Mechanistic studies suggest that both hydrogen release and B−N coupling are metal-catalyzed ... -
Design, Synthesis and Applications of new cationic ligands of the 15th main group elements
(2017-12-08)The dissertation focuses on the development of new cationic phosphines and their applications in transition metal catalyses. In pi-acid catalysis they proved their superiority in comparison with state of the art ligand ... -
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 ... -
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) ... -
DOSY External Calibration Curve Molecular Weight Determination as a Valuable Methodology in Characterizing Reactive Intermediates in Solution
(2016-04-01)A new DOSY-ECC-MW-determination methodology is introduced. This method determines molecular weights of unknown solutes in THF-d8 and TOL-d8 solution with exceptional accurately and reliability with a maximum deviation of ... -
Electrochemical Dinitrogen Splitting and Nitride Transfer to Nitric Oxide with Rhenium Pincer Complexes
(2022-04-26)The Haber-Bosch process for the synthesis of ammonia from nitrogen and hydrogen consumes large amounts of energy and additionally relies on fossil feedstocks for the production of hydrogen. Alternative approaches for the ... -
Electrochemical N2-splitting and functionalisation in the coordination sphere of Rhenium
(2021-07-13)This thesis describes the exchange of stoichiometric, wasteful chemical redox-reagents with electrochemical activation methods within a rhenium-mediated N2-splitting and functionalisation cycle. After establishing ... -
Electronic Structure and Reactivity of Bioinspired Organometallic Iron Complexes Relevant to Small Molecule Activation
(2017-06-15)This PhD thesis focuses on the development and characterization of new organometallic iron complexes as models for abundant enzymatic systems. The use of a macrocyclic tetracarbene ligand system results in novel features ... -
Femtosecond spectroscopy of charge-transfer dynamics in self-assembled Pd(II) based donor-acceptor/host-guest cages and heterobinuclear alkyne-bridged W(II)-Ru(II) and W(II)-Ir(III) complexes
(2024-04-11)Using femtosecond UV/vis-pump-UV/vis-probe and -midIR-probe absorption spectroscopy the charge-transfer dynamics of self-assembling donor-acceptor Pd(II) coordination cages and heterobinuclear alkyne-bridged W(II)-Ru(II) ... -
Late-Stage Peptide Functionalization by Transition Metal-free and Palladium-Catalyzed C–H Arylations
(2022-03-31)The focus of this thesis was set on the late-stage modification of peptides through transition metal-free and palladium-catalyzed C–H arylations. At first, the scope of the transition metal-free C2-arylation of the ... -
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). ... -
Metal-Nitrogen Multiple Bonds with Square-Planar Group 9 Transition Metal PNP Pincer Complexes
(2014-11-26)Nitrogen is ubiquitous in synthetic and biosynthetic products as an important building block for molecular architecture and functionality. Bimolecular dinitrogen (N2) is its common appearance in nature and is characterized ... -
Metallaelectro-Catalyzed C─H Activations by 3d Transition Metals
(2020-09-17)The functionalization of C–H bonds largely relies on organic (pseudo-)halide electrophiles as coupling partners, which results in stoichiometric quantities of undesired by-products. Therefore, to achieve better resource ...