Zhu, Sascha Shuxia: Cavitands, Helicates and Macrocycles : Unleashing the Power of Weak Non-Covalent Interactions. - Bonn, 2009. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5N-19453
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5N-19453,
author = {{Sascha Shuxia Zhu}},
title = {Cavitands, Helicates and Macrocycles : Unleashing the Power of Weak Non-Covalent Interactions},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2009,
month = nov,

note = {In the course of the development of supramolecular chemistry, weak non-covalent interactions have gained tremendous importance. In this work, comprehensive massspectrometric investigations combined with theoretical calculations reveal a new type of these interactions, namely C–H•••anion interactions, to be operative when anions were bound in the bowl of resorcinarene-based cavitands. A further mass-spectrometric study focuses on the formation and ligand exchange processes in helicate-type complexes, in which the hierarchical self-assembly is assisted by Li+•••O=C interactions, and shows that homodinuclear helicates are preferably formed rather than heterodinuclear Ni/Zn helicates in corresponding mixtures. Not an undefined mixture, but a toolbox of specific building blocks was developed on the basis of tetralactam macrocycles in a modular approach. Using this versatile toolbox, a series of multi-macrocylic hosts and some multiply interlocked architectures, in which the threading process is governed by hydrogen bonds, were obtained. In addition, interesting intermolecular hydrogen-bonding patterns and unusual conformational properties were found in crystal structures of tetralactam macrocycles. In summary, this thesis provides new insight into the nature of weak non-covalent interactions and of supramolecular phenomena.},
url = {http://hdl.handle.net/20.500.11811/4156}

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