Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"halogen bonds"”.
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Formal Insertion Reactions Of Stannylenes And Germylenes Into Phosphorus-Halogen Bonds: A Structural And Mechanistic Investigation
… (M = Ge or Sn) into the P-halogen bond of halophosphines have been known for some time. However, very few examples have been reported and no evidence has been presented regarding the mechanism by which these reactions take place. Comparatively, insertion of the same or …
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Photolysis of (Halomethyl)naphthalenes: An Investigation of the Heterolysis and Homolysis of Carbon-Halogen Bonds in (Arylmethyl)halides
… are found to be unreactive. Carbon-halogen bond homolysis occurs apparently both from the direct photolysis and from sensitization via exciplex formation.
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Solving the crystallographic structure of the Cl2J construct and occupancy titration trials to quantitatively determine isomer ratio
Halogen atoms are commonly found in biological organic compounds such as plastic polymers, flame retardants, coolant fluids, insecticides and herbicides. Halogens are known to mediate neurotransmitters in the brain and are required for the production of many hormones (i.e. thyroxine). Because …
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Halogen···Halogen interactions in host - guest systems
For a few decades now, halogen bonds which are non-covalent interactions, have gained a lot of interest in the science community due to their applications in diverse research areas. Halogen bonding (XB) is an interaction that occurs between electron deficient halogen compounds and electron donors. …
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Substrate interactions during the anaerobic biodegradation of 1,1,1-trichloroethane
Halogenated aliphatic hydrocarbons are used in large amounts, persist when released into the environment, and can have adverse effects on human health. Reductive dehalogenation, in which cleavage of carbon-halogen bonds is accompanied by electron transfer to the halogenated substrate, is the most …
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Sustainable strategies for alcohol halogenation
… commonly employed in the formation of new carbon–halogen bonds. However, achieving substitution at the carbon next to an alcohol often comes at the cost of atom economy. This work is centred on enhancing the efficiency of alcohol activation towards halogenation, with respect to halide waste …
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Stereoselective Heterocycle Synthesis via Alkene Difunctionalization: Bulky Phosphine Ligands Enable Pd-Catalyzed Arylhalogenation, Arylcyanation and Diarylation
… reversible oxidative addition to aromatic carbon–halogen bonds, and this rare characteristic is what allows this reaction to proceed to high levels of conversion.
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Self-Assembly in Physisorbed Monolayers via Directional Intermolecular Interactions
… of two non-covalent directional interactions (halogen and hydrogen bonds) to influence the structure of self-assembled physisorbed organic monolayers is considered. These layers exhibit only weak, non-directional interactions with the substrate, and so their structure is driven by the …
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Development of computational tools to model molecular interactions for medicinal chemistry
… an important interaction for drug design, the halogen bond (X-bond). We consider how decades of work has come closer to properly modeling the X-bond, yet there remain many unexplored areas. Two areas are addressed in this dissertation: the structure-energy relationship of 1) a Br…S- X-bond in a …