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Solution structure and dynamics of a sterically congested (π-allyl)palladium complex
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
In: Magnetic Resonance in ChemistryArticle in journal (Refereed) Submitted
URN: urn:nbn:se:uu:diva-94220OAI: oai:DiVA.org:uu-94220DiVA: diva2:167999
Available from: 2006-04-06 Created: 2006-04-06Bibliographically approved
In thesis
1. Bispidine Derivatives: Synthesis and Interactions with Lewis Acids
Open this publication in new window or tab >>Bispidine Derivatives: Synthesis and Interactions with Lewis Acids
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis, the improved synthesis and investigations into the properties of some 3,7-diazabicyclo[3.3.1]nonane (bispidine) derivatives are described. These compounds are structurally related to the naturally occurring lupanine alkaloids, they are of interest because of their cardiac antiarrhythmic function as well as their use as bases or ligands in organic chemical reactions. Their chemical properties are related to the presence of a rigid molecular scaffold with two nitrogen atoms that can be utilized for binding interactions with a variety of Lewis acids.

An improved synthesis has been developed, providing access to bispidines via bispidinones while avoiding the use of highly toxic hydrazine, which is required as reducing agent in alternative methods.

A series of bispidine derivatives with a variety of substituents were characterized regarding their basicity, which spans thirteen orders of magnitude. Correlations between structure and basicity are discussed and computational methods have been used to propose further derivatives with even higher basicity.

The structures of several bispidine derivatives and their protonated forms have been characterized in the solid state by X-ray crystallography and in solution using NMR spectroscopy. Structure and solution dynamics in a sterically congested (π-allyl)palladium complex with a bispidine ligand have been investigated, revealing mechanistic insight into the dynamic process. Using a bulky bispidine as a temporary ligand for a (η3-propenyl) palladium complex, the novel adamantanoid [{(η3-propenyl)Pd}63-OH)4] cluster was prepared.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2006. 43 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 161
Organic chemistry, bispidines, NMR, basicity, structural information, palladium, complexes, Organisk kemi
National Category
Organic Chemistry
urn:nbn:se:uu:diva-6735 (URN)91-554-6509-9 (ISBN)
Public defence
2006-04-28, Room B22, BMC, Husargatan 3, Uppsala, 13:15
Available from: 2006-04-06 Created: 2006-04-06Bibliographically approved

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