Tetraphenylarsonium oxide

Acetate, (C6H5)4AsC1, citrate, 2,3-dimercaptopropanol, EDTA, I-, Na5P3O10, SO)-, S20)-, tartrate, tiron, tetraphenylarsonium chloride, triethanolamine, thioglycolic acid Acetylacetone, citrate, CN-, EDTA, I-, NH3, N02, SCN-, S20)-, tartrate, triethanol amine Citrate, CN-, EDTA, I-, NH3, N02, SCN-, S20 -, tartrate, urea Reduction to Pu(IV) with sulfamic acid C20)-, citrate, EDTA, F-, tartrate Oxidation to perrhenate Citrate, tartrate, thiourea CN-, thiourea... 

C. Tetraphenylarsonium chloride hydrochloride. In a 2-1. round-bottomed three-necked flask fitted with a condenser, a mercury-sealed mechanical Hershberg stirrer, and a dropping funnel is placed 40 g. (0.124 mole) of triphenylarsine oxide dissolved in 1 1. of hot benzene. To this solution there is added with vigorous stirring a solution of phenylmagnesium bromide which is prepared from 34.6 g. (0.22 mole) of bromobenzene, 6.0 g. (0.25 gram atom) of magnesium, and 200 ml. of dry ether. A brown viscous solid separates. The mixture is stirred for 15 minutes and then stirred and heated under reflux on a steam bath for 30 minutes. The solvent is removed by decantation, and the viscous solid is washed with 500 ml. of benzene. The addition product is... 

Tetraphenylarsonium chloride hydrochloride has been prepared by the action of phenylmagnesium bromide on triphenylarsine oxide. The method described here is essentially that of Blicke and Monroe. ... 

Of a series of quaternary permanganate salts examined as organic oxidants, those of the unsaturated cations benzyltrimethylammonium, benzyltriethylammonium, methyltriphenylphosphonium, ethylenebis(triphenylphosphonium) and hexadecyl-pyridinium all decomposed explosively at —80—90°C, and of tetraphenylarsonium at 120—130°C. The permanganate salts of the saturated cations... 

Similarly, in 0.1 M hydrochloric acid or at pH 5.3 resolution from the wave of triphenylarsine oxide is not possible. At pH > 7 only the latter species is active. Thus, by choice of a suitable pH, specific determination of phenylarsonic acid, diphenylarsinic acid and triphenylarsineoxide in mixtures is possible. Inorganic arsenic(V) is electroinactive while the tetraphenylarsonium ion is reduced at much more negative potentials. Arsenic(III) species are reduced at more positive potentials. Polarography is thus of value for the quantitative speciation of organoarsenic samples. 

Finally mixing of aliphatic or aromatic nitroso compounds with benzene sulfinic acid leads immediately to formation of benzene-sulfonylaminyloxides75. Aminyl-oxide anion 62 was detected when nitrosobenzene was allowed to react with aqueous hydrogensulfite in presence of lead dioxide76. With nitroso trifluoromethane radical 63 was formed. With tetraphenylarsonium cation this radical anion even formed a solid, paramagnetic precipitate77. ... 

Rhenium(VII) oxide is a canary-yellow solid, forming as hexagonal crystals. It begins to sublime at 250° under 1 atmosphere of pressure and melts at 297° in a closed tube. It is very soluble in water and in such basic solvents as ethers, esters, alcohols, dioxane, and pyridine. It is extremely deliquescent, absorbing water to form perrhenic acid (HRe04). The product may be analyzed using the tetraphenylarsonium chloride procedure. ... 

Very few experimental observations, or electrochemical studies, of electron transfer across a liquid-liquid interface have been reported. This paucity is due to the difficulties associated with the choice of systems for which the Gibbs energy of transfer of both the reactants and products are well known, so as to ensure that the measured currents are due to electron transfer and not ion transfer. Other difficulties, associated with the nature of the supporting electrolytes often used in the organic phase, also hindered early progress in this area (e.g., tetraphenylarsonium can oxidize ferrocene, or tetraphenylborate can be easily oxidized thereby reducing the size of the potential window). The pioneering work of Samec et. was based on the oxidation of ferrocene in the... 

The radiolysis of several bromates has been studied. There is evidence for the production of BrO by gamma irradiation at 30 °C in rubidium, caesium, and tetraphenylarsonium bromates but not in LiBrOa. The photoannealing of oxidized species was first-order for KBrOa and CsBrOa, with a threshold energy of 1.74 and 1.41 eV respectively. It was thought that the reaction could be exciton-stimulated. 

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