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Showing 1 to 20 of 438 for “"ruthenium"”.
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Ruthenium-Thiozimtaldehyd-Komplexe
… neuer achiraler und chiraler kationischer Ruthenium-Bis(phosphan)-Thiozimtaldehyd-Komplexe. Die Umsetzung der chiralen Hydrogensulfid-Komplexe mit unterschiedlich substituierten Zimtaldehyden in Anwesenheit von Trifluoressigsäure führt zu den chiralen Thiozimtaldehyd-Komplexen. Im zweiten …
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Cyclopentadienyl ruthenium chalcogenides
… sulfide hydrodesulfurization (HDS) catalysts. Ruthenium sulfur complexes are of interest because of the favorable catalytic properties of RuS$\sb2$ which can act as HDS catalyst as well as an electrocatalyst. The purpose of this thesis was to synthesize, characterize, and study the reactivity …
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Mechanistic Studies in Ruthenium Chemistry
… starting compounds of use in preparative ruthenium chemistry. Especially with those compounds which might lead conveniently to the formation of compounds of interest in mechanistic and photochemical studies. The synthesis of various Schiff base complexes of ruthenium (11) and (111) using …
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Electrodeposition of Copper on Ruthenium Oxides and Bimetallic Corrosion of Copper/Ruthenium in Polyphenolic Antioxidants
Copper (Cu) electrodeposition on ruthenium (Ru) oxides was studied due to important implications in semiconductor industry. Ruthenium, proposed as the copper diffusion barrier/liner material, has higher oxygen affinity to form different oxides. Three different oxides (the native oxide, reversible …
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Study of Ruthenium and Ruthenium Oxide's Electrochemical Properties and Application as a Copper Diffusion Barrier
… recently. In this dissertation, we investigated ruthenium and ruthenium oxide electrochemical properties and the application as a copper diffusion barrier. Cu under potential deposition (UPD) on the RuOx formed electrochemically was first observed. Strong binding interaction, manifesting by the …
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Ruthenium K-edge X-ray absorption spectroscopy studies of ruthenium complexes relevant to olefin metathesis
… previous extensive study of the widely-employed ruthenium-catalysed olefin metathesis reaction, the finer mechanistic details have not been elucidated. An area that is noticeably lacking is spectroscopic exploration of the relevant complexes. In this work, organometallic ruthenium complexes of …
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Ruthenium Hydride Catalyzed Silylvinylation of Alkynes
<p>The intermolecular ruthenium hydride catalyzed coupling of internal alkynes with subsequent insertion of olefin acceptors is described. This approach utilizes a vinyl silicon tether to provide complete regiocontrol, a stereoselective anti-exo-dig cyclization which affords a tetrasubstituted …
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Chemiluminescence and photoluminescence of ruthenium chelates.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1968. Ph.D.
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The Zeeman effects in ruthenium I
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1941.
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Study of Copper Electrodeposition on Ruthenium Oxide Surfaces and Bimetallic Corrosion of Copper/Ruthenium in Gallic Acid Solution
Ruthenium, proposed as a new candidate of diffusion barrier, has three different kinds of oxides, which are native oxide, electrochemical reversible oxide and electrochemical irreversible oxide. Native oxide was formed by naturally exposed to air. Electrochemical reversible oxide was formed at …
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Photochemical Oxidation Studies of Porphyrin Ruthenium Complexes
… in nature, namely, the cytochrome P450 enzymes. Ruthenium porphyrin complexes have been the center of this research and have successfully been utilized, as catalysts, in major oxidation reactions, such as the hydroxylation of alkanes. The present work focuses on photocatalytic studies of aerobic …
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Computational Studies of Selected Ruthenium Catalysis Reactions.
… and characteristics of transition metal (i.e., ruthenium) catalysts, and to explore their mechanisms. The studied catalytic pathways are particularly relevant to catalytic hydroarylation of olefins. These processes involved the +2 to +3 oxidation of ruthenium and its effect on ruthenium-carbon …
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Photochemistry and Photophysics of Octahedral Ruthenium Complexes
The photo-induced ligand loss of the complexes [Ru(tpy)(AN)<sub>3</sub>]<sup>2+</sup> and cis-[Ru(tpy)(AN)<sub>2</sub>Cl]<sup>+</sup> (tpy = 2,2`:6`2``-terpyridine) and [Ru(tpy)(5CNU)<sub>3</sub>]<sup>2+</sup> was studied in water and in CH<sub>2</sub>Cl<sub>2</sub> in the presence of chloride from …
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Eta5-pentamethylcyclopentadienyl ruthenium complexes containing sulfur ligands
… respectively. The formal oxidation state of ruthenium in all of the products was IV except for 2.13 and 2.14.
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Electrochemiluminescence of a Ruthenium Polypyridyl Cyanide Complex
… clinical and laboratory diagnostics. Polypyridyl ruthenium complexes containing cyanide have also been shown to have strong visible absorptions and ground and excited state properties that make them potentially useful in practical application. However, their ECL has never been reported. The …
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1,2-naphthoquinone mono-oximato complexes of ruthenium
The ruthenium(II) complexes Ru(nqo)2 (nqoH = 1,2-naphthoqulnona 1-oxima, or 2-oxima) were prepared by the interaction of the sodium salts of the 112-naphthoquinone mono-oximes with hydrated ruthenium(III) chloride in aqueous tetrahydrofuran.
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