Tris -, tetraphenylarsonium

It was found that chlorides, chlorates, and nitrates interfere by forming in sol ppts (Ref 6). Later it was found that w sol perchlorates could be analyzed gravimetrically by pptn of the perchlorate ion as tetraphenylarsonium perchlorate (Ksp at 20° = 2.60 0.14 x 10"9). The ppt can be (Tried at 105° and weighed directly (Ref 16). Still more recently a specific perchlorate ion electrode has been developed (Ref 17) which can be used for the potentiometric titration of the perchlorate ion using a soln of tetraphenylarsonium chloride as the titrant (Ref 15). Tetra-phenylphosphonium chloride has been similarly used, but the corresponding Sb compd is too insol in w for practical use (Ref 8), For routine assay of perchlorates for use by the armed forces, a Na carbonate fusion procedure is described in Mil Specs MlL-A-23946 (19 Aug 1964) MIL-A-23948 (19 Aug 1964) (see also under Ammonium Perchlorate). The tetraphenylarsonium chloride procedure has also been proposed for use in Mil Specs (Ref 11)... 

Tetraphenylarsonium tris[cis-l,2-bis(trifluoromethyl)-l,2-ethylenedi-thiolato]molybdate(2 —)... 

N6Li4Te2C24H54, Tellurite, bis dilithium[tris-(tert-butylimido)-], 34 46 N7ASC35H22, 2-(5-Amino-3,4-dicyano-277-pyrrol-2-ylidene)-1,1,2-tricyanoethanide, tetraphenylarsonium salt, 34 69 N7C11H3, 5-Amino-3-imino-1,2,6,7-tetracyano-377-pyrrolizine, 34 72... 

The tris[0-ethyl dithiocarbonato tellurate(II) anion was obtained in the form of its tetraethylammonium1 or tetraphenylarsonium salt2, when tellurium bis[0-ethyl dithiocarbonate] was combined with additional 0-ethyl dithiocarbonate in warm methanol2 or ethanol1. 

Tetraphenylarsonium Tris[0-ethyl dithiocarbonato]tellurate(II)2 580 mg (4.00 mmol) of potassium 0-ethyl dithiocarbonate and 1.68 g (4.00 mmol) of tetraphenylarsonium chloride are dissolved in 40 ml of warm methanol, 1.48 g (4.0 mmol) of solid tellurium bis[0-ethyl dithiocarbonate] are added, the mixture is stirred for a few minutes, and then filtered through a fine glass frit into a flask cooled at — 10°. The filtrate is stored in a freezer overnight, the yellow crystals are collected, and recrystallized from warm (45°) methanol yield 0.25 g (7%) m.p. not reported. 

Tellurate(II) Tetraphenylarsonium- -tris-[ethoxy-thiocarbonylthio]-E12b, 55 [(RS)2Te + R-Se]... 

TRIS[BIS(2-METHOXYETHYL)ETHER]POTASSIUM AND TETRAPHENYLARSONIUM HEXACARBONYLMETAL-LATES(l-) OF NIOBIUM AND TANTALUM... 

The third approach may be called the reference electrolyte assumption. It is based on the assumption that the thermodynamic parameters of the electrolyte composed of a large and symmetrical anion and a similarly shaped cation of a 1 1 type can be divided into two equal components. This approach is due to Born [21] but was further developed by other workers who, as a reference electrolyte, suggested tetra-phenylphosphonium tetraphenylborate [28], tris(isoamyl)butylammonium tetra-phenylborate [29] and tetraphenylarsonium tetraphenylborate [30-33]. 

Synthesis of bis(tetraphenylarsonium)tris(oxalato)technetate(IV), [AsPhj2[Tc(ox) ](115). 

C48H30F12P2 t 0.5 C5Hi2r Bis(triphenylphosphine)(perfluoro-1,2-3,4-5,6-triethanobenzene)platinum(0) pentane solvate, 44B, 794 C4eH44AsNb, Tetraphenylarsonium tris(cyclooctatetraene)niobium, 41B, 933... 

C49H46Cl2lrN305P2, Carbonyldichloro(2-nitrophenyldiazenato)bis(tri-phenylphosphine) iridiumdil) bis (acetone), 43B, 1342 C50H1,3AS2CI8MO2NO2, Bis(tetraphenylarsonium) bis(tetrachlorooxomo-lybdenum)methylnitrile, 46B, 1135... 

C33H30ASC0S4 0.5 C2H5OH, Triphenylmethylarsonium bis(toluene-3,4-dithiolato)cobaltate hemiethanolate, 33B, 514 C3 3H3 sAsOaPtSg, Tetraphenylarsonium tris(O-ethyldithiocarbonato)-platinate(ll), 43B, 1409... 

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