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Triphenylphosphine (IUPAC name: triphenylphosphane) is a common organophosphorus compound with the formula P(C 6 H 5) 3 and often abbreviated to P Ph 3 or Ph 3 P. It is versatile compound that is widely used as a reagent in organic synthesis and as a ligand for transition metal complexes, including ones that serve as catalysts in organometallic chemistry.
Os(η 2-O 2 CCH 3)(PH 2)(CO)(PPh 3) 2 [30] Os(η 2-N,N-dimethyldithiocarbamate)(PH 2)(CO)(PPh 3) 2 [30] Os(η 2-acetylacetonate)(PH 2)(CO)(PPh 3) 2 [30] Os(η 2-NO 2)(PH 2)(CO)(PPh 3) 2 [30] OsCl- (PH 2)(CO) 2 (PPh 3) 2 [31] OsCl- (PH 2)(CO)(PPh 3) 3 [31] [Os(μ2-PH 2)Cl(CO)(PPh 3) 2] 2: triclinic P1 a 14.101, b 15.091, c 11.708, α 96.68, β ...
Triphosphane (IUPAC systematic name) or triphosphine is an inorganic compound having the chemical formula HP(PH 2) 2. It can be generated from diphosphine but is highly unstable at room temperature: [3] 2 P 2 H 4 → P 3 H 5 + PH 3. Samples have been isolated by gas chromatography. The compound rapidly converts to PH 3 and the cyclophosphine ...
The measurement of pH can become difficult at extremely acidic or alkaline conditions, such as below pH 2.5 (ca. 0.003 mol/dm 3 acid) or above pH 10.5 (above ca. 0.0003 mol/dm 3 alkaline). This is due to the breakdown of the Nernst equation in such conditions when using a glass electrode.
Phosphine (IUPAC name: phosphane) is a colorless, flammable, highly toxic compound with the chemical formula P H 3, classed as a pnictogen hydride.Pure phosphine is odorless, but technical grade samples have a highly unpleasant odor like rotting fish, due to the presence of substituted phosphine and diphosphane (P 2 H 4).
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The estimated pK a of this carbon acid is near 15. [2] Potassium tert-butoxide has been used in place of butyl lithium. [3] Sodium amide has also been used a base. [4] Methylenetriphenylphosphorane is used to replace oxygen centres in aldehydes and ketones with a methylene group, i.e., a methylenation: R 2 CO + Ph 3 PCH 2 → R 2 C=CH 2 + Ph 3 PO
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