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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.
11

The application of novel multinuclear catalysts derived from dendrimeric ligands in the polymerization and oligomerization of unsaturated hydrocarbons.

Malgas, Rehana January 2007 (has links)
<p>G1 and G2 dendrimeric salicylaldimine ligands containing both substituted and unsubstituted aryl rings were synthesized via a Schiff base condensation of the appropriate salicylaldehyde and the peripheral amino groups of the corresponding G1 and G2 polypropyleneimine dendrimers. The new ligands were characterized using FTIR, 1H NMR and 13C NMR spectroscopy, elemental analysis and ESI mass spectrometry. The dendrimeric ligands were converted to multinuclear nickel complexes by reaction with nickelacetate. The metal complexes were characterized by FTIR spectroscopy, elemental analysis and ESI mass spectrometry.</p> <p>Some of the dendritic complexes were evaluated as catalyst precursors in the oligomerization of &alpha / -olefins such as ethylene and 1-pentene, using aluminium alkyls such as EtAlCl2 and modified methylaluminoxane (MMAO) as activators. All the dendrimeric catalysts evaluated are active in the oligomerization reactions. From the oligomerization results it was observed that there is a clear dendritic effect, in that both catalyst activity as well as selectivity are impacted by the dendrimer generation. In most cases it was observed that the second generation complexes show higher activity than the corresponding first generation complexes.</p> <p>The dendrimeric complexes were also evaluated as catalyst precursors in the vinyl polymerization of norbornene. In this case methylaluminoxane (MAO) were employed as an activator. Once again it was noted that a dendritic effect is operative, with second generation metallodendrimers having a higher activity than the first generation complexes.</p>
12

Die sintese van groep-VI-oorgangselementkomplekse met nuwe S-, P- en N- bevattende ligande

01 September 2015 (has links)
D.Sc. / Please view full text to see abstract
13

MNDO study of some cage molecules.

January 1983 (has links)
by Wing-kwong Ip. / Bibliography: leaf 105 / Thesis (M.Phil.)--Chinese University of Hong Kong, 1983
14

The long and the short of it - ruthenium alkynyl complexes / by Benjamin George Ellis. / Ruthenium alkynyl complexes

Ellis, Benjamin George January 2003 (has links)
"December 2003" / Bibliography: leaves 229-240. / x, 240 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, School of Chemistry and Physics, Discipline of Chemistry, 2004
15

Cyclodextrins : molecular wheels for supramolecular chemistry / Julia Lock.

Lock, Julia S. January 2004 (has links)
"July 2004" / Includes copies of publications by the author as appendix. / Includes bibliographical references. / ix, 181, [26] leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Describes the construction and characterisation of a variety of supramolecular architectures based on cyclodextrins. / Thesis (Ph.D.)--University of Adelaide, School of Chemistry and Physics, Discipline of Chemistry, 2005?
16

Structural and kinetic studies of mu-oxo iron complexes of bis ((dioximato)borate) macrocycles

Vernik, Isak. January 1998 (has links)
Thesis (M. Sc.)--York University, 1998. Graduate Programme in Chemistry. / Typescript. Includes bibliographical references (leaves 158-169). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL:http://wwwlib.umi.com/cr/yorku/fullcit?pMQ27385.
17

Synthesis and properties of some amine and thioether complexes of ruthenium and osmium /

Che, Chi-ming. January 1981 (has links)
Thesis--Ph. D., University of Hong Kong, 1982.
18

Some platinum complexes containing phosphorus.

Lau, Yat-hon. January 1970 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1970. / Mimeographed.
19

Complexes of iminato, nitrido, imido, and hydrazido ruthenium of osmium porphyrins /

Leung, Ka-yan, Sarana. January 2002 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2002. / Includes bibliographical references.
20

Synthesis and properties of some amine and thioether complexes of ruthenium and osmium

支志明, Che, Chi-ming. January 1981 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy

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