Blättern Fakultät für Chemie (inkl. GAUSS) nach "Stalke, Dietmar Prof. Dr." Betreuer
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Advanced NMR Methodology for the Investigation of Organometallic Compounds in Solution
(2013-11-06)The scope of this thesis was to investigate organometallic compounds by advanced solution state NMR methods in order to build a bridge from known solid state structures to their behaviour in solution. Since these reagents ... -
Advanced NMR Techniques for the Investigation of Small Molecules in Solution
(2017-06-28)Nuclear magnetic resonance (NMR) techniques have been developed and employed to study small molecules in solution. A) Slice-selective excitation (SSE) enables the acquisition of spatially resolved spectra. This has been ... -
Aggregation Study on Lithiated Five-membered Heterocycles – Towards the Pentuple Ion
(2014-01-30)The main work of this thesis focuses on the elucidation of the aggregation of 2-thienyllithium, methyl-substituted 2-thienyllithium and 2-furyllithium in the solid state and in solution. The addition of an adequate donor ... -
Ammonia stabilized Carbanions
(2018-01-17)This thesis examines the solvation of alkali metal cyclopentadienyl derivatives (Cp, CpMe, Cp*, indenyl, fluorenyl) in liquid ammonia as well as in solutions of ammonia in polar aprotic solvents. The degree of solvation ... -
Anthracene Based Colorimetric Molecular Sensors
(2015-02-17)Herein, different synthetic approaches to colorimetric luminescence sensors are presented. 9-Anthraceneamines turned out to be promising colorimetric pH sensors. Their large shift of the emission wavelength upon addition ... -
Assessment of Single Crystal X-ray Diffraction Data Quality
(2017-03-13)This PhD thesis focuses on single crystal X-ray diffraction data quality, the handling of systematic errors during data collection and the appropriate modelling of experimental charge density distributions. The development ... -
Bis(benzoxazol-2-yl)methanides in main group organometallic syntheses and enquiry-based education
(2023-02-27)The dissertation entitled “Bis(benzoxazol-2-yl)methanides in main group organometallic syntheses and enquiry based education” constitutes three main chapters. Each chapter concerns a different project the author worked on ... -
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 ... -
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 ... -
Data Quality Bench-Marking for High Resolution Bragg Data
(2015-03-05)The thesis deals with data quality bench-marking for high resolution Bragg data. It compares and evaluates Bragg data from various radiation sources and different detection types. Two different small molecules containing ... -
Design of Phosphorus Centered Janus Head Ligands
(2012-02-03)The scope of this thesis was the preparation of a Janus Head ligand based on the N,P,N ligand di-2-picolylphenylphosphane and the synthesis of different metal complexes containing this Janus ... -
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 ... -
Elucidation of Unconventional Bonding in Lithium Organic Compounds
(2009-08-07)The major goals of this thesis were to synthesise and crystallise novel unsubstituted picolyl metal adducts for structural analyses. Their investigation as well as other lithium organic ... -
Estimating Molecular Weights of Organometallics in Solution with Diffusion NMR Techniques
(2017-03-31)This PhD thesis focuses on diffusion NMR spectroscopy and the utilisation of the external calibration curve (ECC) diffusion-ordered spectroscopy (DOSY) technique on the estimation of molecular weights of organometallic ... -
Evaluation of Detector and Intensity Reliability in Charge Density Studies
(2018-01-26)The work focusses on two chrage density investigations on alkaline matal organic compounds and on the evalutaion of detector and data quality -
Experimental Electron Density Determination of Unconventionally Bonded Boron
(2009-07-22)Two major aims have been pursued in the course of this thesis. On the one hand, reasons for the different reactivities of two Lewis acids based on tris(pentafluorophenyl)borane, namely ... -
Experimentelle Ladungsdichteuntersuchungen von nichtkovalenten Wechselwirkungen
(2021-10-05)The study of weak interactions is important for understanding catalytic processes as well as for development of new macromolecules and solids. Charge density studies can provide important insights into the nature of these ...