Dokumente Fakultät für Chemie (inkl. GAUSS) nach Gutachter "Schneider, Sven Prof. Dr."
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N2 Fixation by Chromium and Rhenium PNP Pincer Complexes
(2022-03-16)This thesis focusses on the activation and functionalization of atmospheric dinitrogen by chromium and rhenium based transition metal complexes. The electronic structure of dinitrogen bridged key species is discussed based ... -
N2 Splitting and Functionalization in the Coordination Sphere of Rhenium
(2017-01-12)The first example of homogeneous N2 splitting mediated by rhenium as group 7 transition metal is reported and represents rare complete scission of the N-N bond in well-defined terminal nitrido complexes. These could be ... -
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 ... -
New Derivatives and Iron Complexes of the Siamese-Twin Porphyrin
(2017-02-14)Variation of the substitution pattern of the Siamese-twin porphyrin (STP), an expanded porphyrin incorporating two pyrazole moieties, identified a set of substituents that result in an optimized preparation of highly ... -
Preorganized Bimetallic Nickel Complexes of Pyrazolate-Bridged Ligands for Cooperative Substrate Transformation
(2017-05-10)This thesis focuses on square-planar, pyrazolate-bridged dinuclear platforms to investigate their reactivity towards small molecules. In the scope of this work two ligands were prepared: a pyrrole-pyrazole based (H3Lpyr) ... -
Proton-Coupled Electron Transfer at Nickel Pincer Complexes
(2019-05-24)The influence of metal coordination on carbon-centered proton-coupled electron transfer processes is an attractive field of research. Reported literature is limited to thermodynamic investigations and substrate oxidation ... -
Ramanspektroskopische Untersuchung der Esterfaltung in Überschallexpansionen, Oder: Wie man bei der Suche nach der Haarnadel im Esterhaufen fünf auf einmal findet
(2022-06-29)The conformational preference of linear alkyl chains with an ester group in the center was investigated using Raman spectroscopy in supersonic expansions. Like alkanes, short esters prefer a stretched conformation, but ... -
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 ... -
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 ... -
Rhenium Mediated Formation of N-Containing Organic Compounds by Nitride Transfer
(2023-01-26)N-containing organic compounds occur in all the organisms, such as in the form of amino acids (and thus proteins), nucleic acids (DNA and RNA), and in the form of energy transfer molecule adenosine triphosphate. The human ... -
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 ... -
Structure-Property Correlations in Luminescent Anthracene Derivatives
(2022-02-17)This thesis aims to investigate the structure-property relationship of luminescent Anthracene derivatives. For this purpose, the Anthracene fluorophore was functionalized in various positions and with different substituents. ... -
Synthesis and Characterization of Polydentate C3 Symmetric Ligand Systems in Metal Coordination
(2019-06-03)Tripodal ligand systems are of key interest in the synthesis of new and promising metal complexes since their tridentate coordination sphere can be used to generate a multitude of different bonding motifs with a suitable ... -
Synthesis of Terminal Transition Metal Pnictide Complexes by Activation of Small Molecules
(2019-08-13)Coordination compounds involving metal-nitrogen bonds are a well-developed class of organometallic chemistry. In contrast, the chemistry of the heavier analogues of nitrogen, e.g. phosphorus and arsenic is far less explored. ... -
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 ... -
Transient and Stable Terminal Imido Complexes of Iridium
(2019-07-02)In conclusion, it has been demonstrated that the proton coupled oxidation of metal-bound amines and water provide access to a wide range of imido- and oxo-complexes, respectively. The synthetic approach of using strict 1 ... -
Tuning the donor properties of bipyridyl-substituted phosphines by metal ion encapsulation & Photocatalytic synthesis of 6H-benzo[c]chromenes from S-aryl sulfonium salts
(2022-11-09)This work is divided into two parts. The first part introduces a novel approach for the synthesis of cationic phosphine ligands by metal ion encapsulation. In this context, multidentate heterophosphines encapsulate a ... -
Two-in-one Pincer Type Ligands and Their Metal Complexes for Catalysis
(2017-02-14)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 ... -
Zugang zu Agrar- & Pharmawirkstoffen durch organische Synthese
(2015-07-30)This thesis contains the design of new spinosyn analogues via two subsequent heck reactions as well as the modification of a beta-selective glycoslylation method and the synthesis of six new potential Hsp47 inhibitors based ...