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  • About
  • 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.
41

The chemistry of osmium-palladium mixed-metal nanoclusters and nanoparticles

Yung, Ka-fu., 容家富. January 2003 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy
42

Reactivities of nitrido- and oxo-ruthenium(VI) and nitridoosmium(VI) complexes containing chelating multianionic ligands and 1,4,7-trimethyl-1,4,7-triazacyclonoane

陳沛明, Chan, Pui-ming. January 1999 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy
43

The chemistry of mixed-metal clusters of osmium and rhodium

Lau, Po-kwan, Jasmine., 劉寶君. January 2005 (has links)
published_or_final_version / abstract / Chemistry / Doctoral / Doctor of Philosophy
44

The chemistry of mixed-metal clusters of osmium and rhodium

Lau, Po-kwan, Jasmine. January 2005 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.
45

Étude des isotopes de l'osmium dans les eaux souterraines du Bangladesh et les sédiments himalayens implications et rôle de l'érosion himalayenne sur le budget océanique de l'osmium /

Paul, Maxence Reisberg, Laurie Vigier, Nathalie January 2008 (has links) (PDF)
Thèse de doctorat : Géosciences : INPL : 2008. / Titre provenant de l'écran-titre.
46

High-valent ruthenium and osmium oxo complexes for homogeneous and photochemical oxidations of inorganic and organic substrates /

Yam, Wing-wah, Vivian. January 1988 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1988.
47

Syntheses, structural characterization and electrochemistry of tetraosmium carbonyl clusters and catalytic properties of tetraosmium-gold mixed-metal clusters /

Li, Yat. January 2002 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2002. / Includes bibliographical references.
48

The tethered aminohydroxylation of allylic carbamates

Johnson, Peter David January 2003 (has links)
The osmium-mediated aminohydroxylation reaction is a powerful oxidation that introduces a hydroxyl group and a protected amino group in a syn relationship across an olefinic double bond. This study concerns one approach to controlling the regioselectivity of this oxidation. Introduction I The mechanism, scope and limitations of the aminohydroxylation reaction are discussed, with particular attention to the asymmetric version, providing a background from which the newly developed methodology has emerged. Results and Discussion I Development of the reaction This section concerns the original attempts to perform the tethered aminohydroxylation reaction, and early process optimisation to maximise the yield of aminohydroxylated product produced. Scope of the reaction This section details the results of the TA reaction as applied to further allylic carbamates demonstrating the applicability of the reaction to other olefinic geometries. The diastereoselectivity of the reaction in cyclic and acyclic systems is reported, and a model to explain the observed results discussed. Also covered within are the syntheses of the various substrates and proof of the stereochemistry of the products. Mechanistic investigations Work involving attempts to isolate a catalytic intermediate from the reaction is described. A crystal structure of this intermediate is discussed. Introduction II The isolation and physiological properties of the antibiotic compound hygromycin A are described. Prior synthetic routes towards this compound are discussed. Results and Discussion II Three approaches towards the aminocyclitol unit of hygromycin A, employing the tethered aminohydroxylation reaction, are outlined. Two of these allow for potential future development and completion of the synthesis.
49

Synthesis and characterization of diphosphine ligands and diphosphine substituted osmium and ruthenium clusters

Kandala, Srikanth. Richmond, Michael G., January 2007 (has links)
Thesis (Ph. D.)--University of North Texas, Aug., 2007. / Title from title page display. Includes bibliographical references.
50

Photochemistry and electrochemistry of triosmium clusters the non-carbonyl co-ligand makes the difference /

Bakker, Maarten Johan. January 2001 (has links)
Proefschrift Universiteit van Amsterdam. / Met lit. opg. - Met samenvatting in het Nederlands.

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