103 



which, saturated with hydrochloric acid and mixed with dichloride of 

 platinum, furnished a light-yellow crystalline platinum-salt, recry- 

 stallizable from boiling-water, and containing 



[(C 4 H 5 ) 3 H 3 (C 4 H 4 )" PN]" C1 2 , 2PtCl 2 . 



Action of Etfiylamine and Trimethylamine upon the bromide of the 



brominetted body. 



The phenomena observed with ethylamine and trimethylamine 

 are perfectly analogous. These substances furnish, with the bromi- 

 netted bromide, new and very soluble dibromides, containing re- 

 spectively 



(C,H S ) 3 

 (C 4 H 4 ) 

 (C 4 H 3 )H 5 



Br 2 and 



Br. 



which, by treatment with oxide of silver, are converted into the cor- 

 responding powerfully alkaline oxides 



(C 4 H 5 ) 3 

 (C 4 H 4 )" 

 (C 4 H 5 )IL 



O, 



and yield, by saturation with hydrochloric acid and precipitation with 

 dichloride of platinum, two splendid platinum-salts crystallizing in 

 long golden-yellow needles, and containing respectively 

 [(C 4 H 5 ) 4 (C 4 H 4 )" H 2 PN]" C1 2 , 2Pt C1 2 , and 

 [(C 4 H 5 ) 3 (C 2 H 3 ) 3 (C 4 H 4 )" PN] " C1 2 , 2Pt C1 2 . 



By the formation of the phosphammonium-compounds, the nature 

 both of the diammonium- and of the diphosphonium-series appears 

 to me finally established. 



It will be interesting to ascertain whether the brominetted bromide, 

 when submitted to the action of monarsines and monostibines, will 

 give rise to the formation of phospharsonium- and phospho-stibo- 

 The solution of this question will not be difficult. 



mum- 



