Browsing Fakultät für Chemie (inkl. GAUSS) by Title
Now showing items 91-110 of 763
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Charakterisierung von Intermediaten in Cobalt-vermittelten Reaktionen
(2019-04-03)Homogeneous catalysis is from outstanding importance for modern chemical synthesis. In addition to palladium- and nickel-based catalyst systems, which are well established for a long time, also cobalt-based catalysts are ... -
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 ... -
Charge Density Distribution in Low-Valent Tetrels
(2013-05-22)The scope of this work was the analysis of the electron density of low valent tetreles. For silicon and carbon-containing compounds. Especially low valent silicon compounds are of great interest because their synthesis has ... -
Charge-density analyses of metal complexes of the bis(benzoxazol-2-yl)methanide ligand
(2023-03-03)In this thesis, several metal complexes of the bis(4-CH3-benzoxazol-2-yl)mehanide (MeBOX) ligand were investigated in charge density studies based on high-resolution single-crystal X-ray diffraction experiments. The aluminium ... -
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 ... -
Chelation-Assisted C–H Activation by Ruthenium and Osmium Catalysts and Recyclable Hybrid Catalysts
(2021-10-25)Since hydrocarbons are omnipresent structural units in organic compounds, the utilization of C–H bonds of hydrocarbons has great potential. Thereby, organic chemists have had utmost interests in the transformation of ... -
Chemical Concepts and X-ray Technologies challenged by Charge Density
(2019-03-27)Investigation of interesting effects on Dibenzylediselenide upon X-ray irradiation, Assessment of the latest generation of X-ray area detectors, Investigation of Frustrates Lewis Pairs (FLP) and chalcogen bonding with ... -
Chemical Synthesis of Alpha-Synuclein Proteins via Solid-Phase Peptide Synthesis and Native Chemical Ligation
(2024-03-05)Parts of this chapter have already been published and have been adapted from the original publication: L. M. Gatzemeier, F. Meyer, U. Diederichsen, T. F. Outeiro, Chemical Synthesis of Alpha-Synuclein Proteins via Solid-Phase ... -
Chemically- and photo-convertible dyes for fluorescence detection of biomolecules
(2024-01-24)Further progress in fluorescence microscopy and nanoscopy depends, among other factors, on the ease of detection, analysis, and selective imaging of bioconjugates prepared from fluorescent dyes with reactive groups and ... -
Chemie im Übergang zwischen Schule und Hochschule
(2018-07-05)Chemistry is a subject with high dropout rates at universities worldwide. The main reasons for these dropout rates are problems with understanding basic chemistry concepts, such as acid-base-reactions, chemical equilibrium ... -
Chemisches Screening von ausgewählten Actinomyceten sowie Strukturaufklärung von Sekundärmetaboliten aus Micromonospora sp. und Pflanzen
(2004-04-27)The core of this thesis is the study of microorganisms and plants of different sources with regard to their production of secondary metabolites.The first part deals with 35 actinomycete ... -
Chirality Detection of Surface Desorption Products using Photoelectron Circular Dichroism
(2022-03-16)In this thesis, I demonstrate the combination of chirality detection via photoelectron circular dichroism with surface scattering experiments and present a novel molecular beam surface science apparatus, specially designed ... -
Cobalt(III)- and Manganese(I)-Catalyzed C-H and C-C Activations
(2019-03-28)Metal-catalyzed C─H and C─C functionalizations have become an increasingly viable approach, which allows the direct formation of C─C and C─heteroatom bonds in an atom- and step-economical manner. However, the significant ... -
Cobalt- and Nickel-Catalyzed Functionalization of Unactivated C–Hal, C–O and C–H Bonds
(2013-11-20)First row transition-metal-catalyzed C–C/C–N bond formations through the functionalization of unactivated C–Hal, C–O and C–H bonds have been developed. The inexpensive nickel and cobalt complexes were introduced to facilitate ... -
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 ... -
Computational and Mass-Spectrometric Investigation of the Structure and Reactivity of Coinage-Metal Ate Complexes and Thermometer Ions
(2025-07-28)Over the past decades, the combination of electrospray ionization (ESI), multi-stage mass spectrometry (MS^n) and computational methods has proven to be a powerful tool for fundamental studies on organometallic chemistry. ... -
Computational Description of Chemical Bond Formation Using Neural-Network Potentials: H-Atom Scattering from Graphene
(2022-08-01)When a hydrogen or a deuterium atom is interacting with a graphene surface during scattering events, its energy loss determines if the projectile will be adsorbed or scattered. The energy loss highly depends on the initial ... -
Computational studies and embedding strategies for the characterisation of a novel covalent bond in proteins
(2025-03-25)This work offers a comprehensive study on the bond properties of a noval covalent bond between three electronegative atoms nitrogen, oxygen and sulfur (NOS), which is found in proteins as crosslink between lysine and ... -
Computational Studies of Many-body effects in Molecular Crystals
(2019-04-12)A method for multiscale modeling of molecular crystals is presented - the additive crystal quantum mechanics/molecular mechanics model (ac-QM/MM). At the one-body level, a single molecule is chosen as the QM region. The ... -
Computational Studies of ThDP-Dependent Enzymes
(2019-03-27)ThDP-dependent enzymes catalyze a variety of biochemical reactions in all domains of life. The mechanistic studies on these complex systems require a wide range of complementary bioanalytical tools. In this context, ...