Browsing Naturwissenschaften, Mathematik und Informatik by Title
Now showing items 4652-4671 of 5544
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Syntheses of Novel Side-Arm Functionalized N-Heterocyclic Silylene Transition Metal Complexes
(2019-08-30)The main field of silylene chemistry is emerging towards the utilization as strong σ-donating ligands for transition metal complexes. The focus of this area of chemistry was set primarily on the recreation of previous ... -
Syntheses, Structures, and Reactivity of Divalent Germanium and Tin Compounds Containing a Diketiminato Ligand
(2002-10-15)In this thesis, diketiminato ligands have been employed as a supporting moiety for germanium and tin compounds. The experimental results demonstrate that steric bulk and additional ... -
Syntheses, Structures, Electrochemical and Oxygen Atom Transfer Properties of Molybdenum and Tungsten Complexes with Sulfur and Selenium Containing Ligands
(2007-05-10)Molybdenum and tungsten can be found at the active sites of the molybdopterin-containing oxygen-atom-transfer enzymes. Another interesting diversity of these enzymes is that in the DMSO ... -
Synthesewege zu neuen Mehrkernkomplexen von Pyrazol-NHC-Hybridliganden mit Übergangsmetallen - mit Fokus auf Silber-Komplexe
(2011-01-17)Targeted ligand design is constantly gaining importance in chemical research. There is a large number of ligands that can be differentiated by their back bone's, the kind and number of donor ... -
Synthesis and Application of new chiral Peptides, Guanidines and Formamides as Organocatalysts for Asymmetric C-C Bond Formation Reactions
(2007-02-07)For this Ph. D. thesis I synthesized chiral peptides, guanidines and formamides and used them as organocatalysts in asymmetric C-C bond formation reactions. Here I demonstrated that small ... -
Synthesis and Characterization of Ethylene-Acrylic Acid Copolymers Produced under High Pressure
(2009-07-28)Free-radical copolymerizations of ethene (E) with acrylic acid were carried out in a continuously operated stirred tank reactor at pressures up to 2300 bar and temperatures up to 300 °C. ... -
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 and coordination chemistry of tetradentate chelators based on ligand-appended G-quadruplex structures
(2016-12-12)In this thesis, the concept of metal base-pairing was adapted for usage with the DNA secondary structure of G-quadruplexes. Apart from the well-known B-DNA double helix, oligonucleotides can form a variety of different ... -
Synthesis and Fluorescence Properties of Anthracene Derivatives and their Metal Complexes
(2014-12-01)By variation of substituents and by complexation of metal ions the fluorescence properties of anthracene derivatives are altered in solid state and in solution. Solid state fluorescence properties are aligned with structural ... -
Synthesis and investigation of frustrated Honeycomb lattice iridates and rhodates
(2014-08-11)Iridates have attracted considerable interest in the last few years due to their potential to host novel electronic and magnetic phases mediated by the combination of strong spin orbit coupling and electronic correlations. ... -
Synthesis and Investigation of Nucleobase Functionalized β-Peptide as SNAREs Model System for Membranefusion
(2015-07-22)In this work, the novel simplified SNARE-mimicking systems consisting of TMD/linker segments of the natural membrane-bound SNARE proteins (syntaxin-1A and synaptobrevin 2) with a nucleobase functionalized β-peptide (β-PNA) ... -
Synthesis and Magnetic Properties of Polyimidosulfur- and Bis(benzoxazolyl)methanide-ligated Complexes
(2022-09-30)The properties of magnetic molecules are promising centerpieces in various fields of research directed toward novel technologies, ranging from quantum computing, high-density data storage systems, and medical imaging ... -
Synthesis and Reactivity of Rare Earth Metals Complexes with a Nitrogen Donor Ligand. Compounds in Formal Low Oxidation States
(2003-06-30)This work presents the synthesis and characterization of dihalogeno derivatives of the rare earth metals with the monoanionic ligand L (L = Et2NCH2CH2NC(Me)CHC(Me)NCH2CH2NEt2) free of coordinating solvent molecules or ... -
Synthesis and reactivity of succinylthioimidazolium salts: A unified strategy for the preparation of thioethers
(2020-12-21)Sulfur is one of the main group elements on our planet with a natural abundance of (0.46±0.15)w%. In its most common allotropic form sulfur is a yellow powder and exhibits a cyclic S8 structure. Apart of the cyclic S8 ... -
Synthesis and Structural Studies of Group 12 Metallasiloxane and Phosphonate aggregates
(2004-01-07)Molecular compounds for the preparation of advanced materials has been the target of recent years. Earlier reports on the hydrolysis of metal alkoxides by sol-gel method have resulted in ... -
Synthesis and X-ray Structural Characterization of Oxygen Bridged Complexes for Olefin Polymerization: A Theoretical Interpretation of Structure and Activity Relationship
(2007-11-22)This PhD thesis describes the synthesis and X-ray structural studies of oxygen bridged heterobi- and trimetallic complexes for olefin polymerization reactions. First part of work describes the preparation and characterization ... -
Synthesis of Diverse Polyfunctional Amides as Precursors to Potentially Interesting Peptidomimetics
(2008-10-22)First chapter is dedicated to the applying of the Ugi multicomponent reaction for the synthesis of the compound containing small ring systems such as cyclopropane and its structure ... -
Synthesis of fluorescent toxin and nucleotide derivatives to specifically address membrane proteins
(2015-07-15)Within this project, new tools for in vivo/in vitro labelling were developed and investigated, which may be utilized in the future to elucidate structures, localisation and distinct processes of biomolecules in their native ... -
Synthesis of Modified and Labelled Lipids for Analysis of Enzyme Mechanisms and Membrane Interactions
(2017-11-21)Communication is key. The development of language represents a milestone in human evolution history. Long before verbal communication evolved, other, more essential forms of information transfer have arisen. The necessity ... -
Synthesis of Modified Biomolecules to Investigate Neuronal Processes
(2021-04-30)Action potentials are an essential process for signal transmission in excitable cells. At chemical synapses, the action potential triggers the release of neurotransmitters from synaptic vesicles to transmit the signal to ...