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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 231 to 240 of 1591 (0.031 seconds)Spelling suggestions: "subject:"iigands"" "subject:"igands""
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The study of memory effects in allylic alkylationStephen, Susanna Catherine January 2000 (has links)
No description available.
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| 232 |
The Synthesis and Characterisation of a Novel Polyamine-Terpyridine Ligand and Related ComplexesThornley, Paul Andrew January 2009 (has links)
This project was aimed at synthesising, characterising and examining the properties of the novel polyamine ligand 4’-{2’”-(12-Amino-2,6,9-triazadodecyl)-phenyl}-2,2’:6’,2”-terpyridine and its related complexes. The ligand would be based around the 4’-(o-toluyl)-2,2’:6’,2”-terpyridine framework and have potential applications in analytical chemistry.
The 4’-(o-toluyl)-2,2’:6’,2”-terpyridine framework would have a tail attached on the functionalised o-toluyl methyl group. The ortho toluyl functionality was chosen so that the donor atom containing tail would be directed back towards the coordination site. This would make it easier for the tail to interact with a central metal ion. There is potential to be able to change the number and type of donor atom in the tail so that the ligand may be metal ion selective. As the tail would contain donor atoms, the denticity of the ligand would be increased making it more applicable for complexometric titrations. The 2,2’:6’,2” terpyridines exhibit strong colours when coordinated to selective metal ions and so would have potential applications in colorimetry also.
The ligand was successfully synthesised and characterised. In a multi-step process, the 4’-(o-toluyl)-2,2’:6’,2”-terpyridine underwent radical bromination before the tail was attached. The tail used in this research was N,N'-bis (3-aminopropyl)ethane-1,2-diamine (3,2,3-tet). The secondary amines in this polyamine tail were protected before addition to the brominated 4’-(o-toluyl)-2,2’:6’,2”-terpyridine to ensure terminal addition. After the tail addition, a two step separation process purified a sample of 4’-{2’”-(12-Amino-2,6,9-triazadodecyl)-phenyl}-2,2’:6’,2”-terpyridine for analysis. Due to the late stage in this research where a successful separation technique was found, little work was done on examining the properties of this ligand and its complexes.
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| 233 |
Silane, vinylsilane and vinylketone complexes of RhodiumKaye, Philip Ian January 1998 (has links)
No description available.
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| 234 |
A small molecule model for carbonic anhydraseGreener, Bryan January 1997 (has links)
No description available.
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| 235 |
Imido and phosphine bridged organometallic complexesNorman, Timothy January 1995 (has links)
No description available.
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| 236 |
The synthesis and application of novel chiral transition metal complexesGreen, Simon Michael January 1999 (has links)
No description available.
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| 237 |
Interaction of nucleosomes with oligonucleotides and minor groove binding ligandsBrown, Philip Michael January 1997 (has links)
No description available.
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| 238 |
Kinetic, equilibrium and structural studies on imidodithiodiphosphinates and hydroxyoximesSangha, Satindra P. January 1999 (has links)
No description available.
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| 239 |
The role of the La antigen and associated RNAs in the regulation of protein synthesisJames, Marion Clare January 1996 (has links)
No description available.
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| 240 |
New concepts in asymmetric catalysisHarding, Michael January 1998 (has links)
No description available.
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