2-methyl-1-phenyl- -tetraphenylborate

Tellurolanium 2-Methyl-l-phenyl-(Tetraphenylborate) E12b, 691 (R2TeI2 +- BAr4)... 

Dimethyl and methyl phenyl 4,4-dimethyl-2,6-dioxocyclohexylidene tellurium compounds transferred a methyl group to triethylamine, triphenylphosphane, tris[di-methylamino]phosphane, and triphenylarsane. The methyl onium cations were isolated as tetraphenylborates. The alkylidene organo telluronium intermediate was identified by P-NMR spectroscopy in the reaction of the ylide with tris[dimethylamino]phosphanek... 

Dimethyl Phenyl Telluronium Tetraphenylborate1 0.46 g (2 mmol) of dimethyl telluronium dichloride are dissolved in 30 ml of absolute methanol and a solution of 1.7 g (5 mmol) of sodium tetraphenylborate in 30 ml of methanol is added dropwise with stirring at 20°. Stirring is continued for 2 h, the mixture is filtered, and the solid is recrystallized from ethyl methyl ketone yield 0,81 g (65%) decomposes above 200°. 

Methyl-l-phenyl-tellurolanium Tetraphenylborate A mixture of 4.52 g (10 mmol) 2-methyl-telIuroIane-... 

Various aromatic amines, phenols, and compounds containing active methylene groups can be titrated with arenediazonium salts, from which 4-bromo-l-naphthale-nediazonium chloride seems to be the most widely applicable titrant. Compounds that react slowly with arenediazonium salts can be determined by back-titration when the excess of arenediazonium salt is back-titrated with either sodium tetraphenylborate or 2,4-diaminotoluene. Indirect determination is useful for secondary amines, which react with arenediazonium ions to form triazenes. The determination of diazonium salts of ampholytic character is based on the reaction of these salts with l-phenyl-3-methyl-5-pyrazolone, the excess of which is titrated with 4-bromo-l-naphthalenediazonium chloride solution. 

P2B02PtC4oH57, Platinum(II). (3-methoxy-3-oxo-KO-propyl-KC )bis(triethylphos-phine)-, tetraphenylborate(l-), 26 138 P2BPtC44Ht3, Platinum(ll), (q -cyclo-octene)bis(triethylphosphine)-, tetra-phenylborate( 1 —), 26 139 P2C4H 4, Phosphine, 12-ethanediylbis(di-methyl-, nickel complex, 28 101 P2C25H22. Phosphine, methylenebis(di-phenyl-, palladium complex, 28 340 ruthenium complex, 26 276,28 225 P2C26H20, Phosphine, ethynnediylbis(di-phenyl-, ruthenium complex, 26 277, 28 226... 

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