Synonymer & Information om | Engelska ordet PHOSPHINE

Exempel på hur man kan använda PHOSPHINE i en mening

• Pure acetylene is odorless, but commercial grades usually have a marked odor due to impurities such as divinyl sulfide and phosphine.
• Marsh gas, also known as swamp gas or bog gas, is a mixture primarily of methane and smaller amounts of hydrogen sulfide, carbon dioxide, and trace phosphine that is produced naturally within some geographical marshes, swamps, and bogs.
• The programme also covers events happening in the night sky at the time of broadcast, such as a bright comet or a meteor shower, and recent developments in space and astronomy, such as the Rosetta space mission and the detection of phosphine in Venus' atmosphere.
• Philippe Gengembre (1764–1838), a student of Lavoisier, first obtained phosphine in 1783 by heating white phosphorus in an aqueous solution of potash (potassium carbonate).
• During this time he began using crystallography to elucidate the structures of a wide variety of molecules including phosphine, arsine and others.
• The JCMT was also involved in the discovery of phosphine, a potential biomarker, in the atmosphere of Venus.
• For example, the Tm and tripodal phosphine classes have an equally good claim to be scorpionate ligands.
• Early examples of pincer ligands (not called such originally) were anionic with a carbanion as the central donor site and flanking phosphine donors; these compounds are referred to as PCP pincers.
• It can be used to make trioctylphosphine oxide (TOPO), used as an extraction agent, although TOPO is usually made via the corresponding phosphine.
• This reaction is widely used for the synthesis of various phosphonates, phosphinates, and phosphine oxides.
• Knowles developed one of the first asymmetric hydrogenation catalysts by replacing the achiral triphenylphosphine ligands in Wilkinson's catalyst with chiral phosphine ligands.
• DCC is produced by the decarboxylation of cyclohexylisocyanate using phosphine oxides as a catalyst:.
• In 2012, scientists at the University of New South Wales were able to use phosphine to precisely, deterministically eject a single silicon atom onto a surface of epitaxial silicon.
• The reaction mechanism centers around the formation of an iminophosphorane through nucleophilic addition of the aryl or alkyl phosphine at the terminal nitrogen atom of the organic azide and expulsion of diatomic nitrogen.
• Anhydrous acid cannot be obtained by simple evaporation of the water, as the acid readily oxidises to phosphorous acid and phosphoric acid and also disproportionates to phosphorous acid and phosphine.
• For example, a bis(diphenylphosphino) derivative was used as a phosphine ligand on nickel in a highly selective hydrocyanation reaction of butadiene.
• In solution, this compound readily dissociates one of the three phosphine ligands, thereby generating a reactive 16-electron complex that binds or oxidatively adds a variety of substrates such as alkynes, olefins, dihydrogen, and dioxygen.
• The hypophosphite ion is thermodynamically unstable, and disproportionates on heating to phosphine and phosphate salts:.
• Previous hydrogenation catalysts included Wilkinson’s catalyst and a cationic rhodium(I) complex with two phosphine groups developed by Osborn and Schrock.
• The environment, health and safety aspects of aluminium indium gallium phosphide sources (such as trimethylgallium, trimethylindium and phosphine) and industrial hygiene monitoring studies of standard MOVPE sources have been reported in a review.

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