Examples of 'phosphonium' in a sentence
Meaning of "phosphonium"
Phosphonium - a positively charged ion that contains phosphorus. It is often used in the field of chemistry and chemical compounds
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- the tetravalent positively-charged phosphorus cation R₄P⁺
How to use "phosphonium" in a sentence
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phosphonium
Use of phosphonium compounds in the production of leather.
Quaternary ammonium and phosphonium salts are preferred.
Many phosphonium halide reagents are commercially available.
The product contains the phosphonium cation.
The phosphonium catalyst tends to be a solid material.
The second phase is made up of phosphonium hexafluorophosphate.
The phosphonium halide is employed in a catalytic quantity.
Phosphines may also be added as a phosphonium salt.
Phosphonium salts are difficult to use because of their toxicity.
Additional suitable examples are acyloxy phosphonium salts.
Purified phosphonium catalyst is recycled to the reaction zone.
Pharmaceutical compositions with phosphonium antimicrobial agents.
No specific advantage is attributed to the quaternary phosphonium.
Preparation of the phosphonium bromide salt.
The phosphonium salts may be chloride or bromide salts.
See also
These may be quaternary ammonium or phosphonium groups.
These phosphonium salts yield the corresponding phosphoranes.
The catalyst disclosed is a tetraalkyl phosphonium compound.
Examples of phosphonium hydroxide include quaternary phosphonium hydroxide.
The carbonation catalyst may be a phosphonium compound.
A phosphonium or arsonium quaternary group.
A preferred accelerator is butyl triphenyl phosphonium bromide.
Quaternary phosphonium compounds are preferred.
Process for the preparation of phosphonium sulfonates.
Quaternary phosphonium and sulphonium compounds can also be used.
A presently preferred catalyst is a phosphonium salt catalyst.
Suitable quaternary phosphonium salts are known to the skilled person.
Sorbitol is providing excellent stability to the phosphonium catalyst.
A specific example of such a phosphonium salt may be tetrabutylphosphonium chloride.
Preferably the catalyst is triphenyl ethyl phosphonium iodide.
A specific example of the phosphonium hydroxides is quaternary phosphonium hydroxide.
This invention relates to deactivation of phosphonium salt catalysts.
Phosphonium coupling is a chemical reaction in organic chemistry for organic synthesis.
An excellent example is tetrabutyl phosphonium bromide.
The quaternary phosphonium salts may be used either singly or as combined.
The nucleation agents also include quaternary phosphonium salts.
The counterion for the phosphonium salt is preferably a halogen ion.
Particularly good results were obtained with tetrabutyl phosphonium bromide.
Syntheses of phosphonium salts.
These contaminants include decomposition products of the phosphonium catalyst.
Quaternary ammonium salts and phosphonium salts are mentioned as suitable catalysts.
Suitable counterions are protonated amine or aniline derivatives or phosphonium ions.
The catalyst is a phosphonium compound.
Useful phosphonium salts to serve as the catalyst include tetraphenylphosphonium halides.
These may be quaternary ammonium or phosphonium or tertiary sulphonium groups.
The phosphonium compound is then isolated as its bromide or iodide salt.
Quaternary ammonium or phosphonium halide.
Examples of quaternary phosphonium salts are cetyltripropylphosphonium bromide and triphenylethylphosphonium bromide.
Also useful are the ammonium sulfonate analogues of the phosphonium sulfonates.
Quaternary ammonium or quaternary phosphonium groups are not formed by this reaction.
