Design and construction of halogen-bonded capsules and cages
This thesis describes the design, synthesis and characterization of
supramolecular halogen-bonded capsules and cages from multivalent ligands.
In the first part of the thesis, an overview to halogen bonding is provided. After
discussing the general features of the halogen bonding, the most frequently
used halogen bond donors are introduced and examples of their utilization in
halogen-bonded systems are discussed. The chapter also presents recent
advances made in the field of halogen-bonded supramolecular capsules. The
first part of the thesis also includes a review of halogen-bonded complexes
involving halonium ions, and a brief introduction to [N···X+···N] halogen
bonds is provided along with a few examples of other three-center four-electron
complexes.
The second part of the thesis outlines the design, synthesis and
characterization of halogen-bonded assemblies, capsules and cages based on
tetravalent resorcinarene cavitands and tripodal N-donor ligands. The results
obtained are described in detail in the five publications.
Both halogen bond donors and acceptors were studied. Halogen bond
donors functionalized with four haloacetylene moieties were used as tetravalent
donors and their halogen bonding ability towards neutral and anionic halogen
bond acceptors were studied in the solid state by single-crystal X-ray
crystallography.
[N···I+···N] halogen bonds were utilized in the formation of capsular
assemblies from pyridine-functionalized cavitands. Based on the ligand design,
dimeric and hexameric capsules were prepared through their structurally
analogous metal-ligand coordination complexes. The formed complexes were
characterized in solution and in the gas phase. [N···I+···N] halogen bonds were
further applied to the construction of halonium cages from tripodal N-donor
ligands. For the first time, crystal structures of supramolecular cages
constructed via multiple [N···I+···N] halogen bonds were obtained.
...
Publisher
University of JyväskyläISBN
978-951-39-7170-0ISSN Search the Publication Forum
0357-346XKeywords
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- Väitöskirjat [3585]
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