On the Action of Bromide of Ethylene upon Aniline. 67 



in ether. The sohitions are without action on vegetable colours. 

 The substance dissolves readily in hydrochloric, sulphuric and nitric 

 acids, especially on gently heating the liquids, which on cooling de- 

 posit well crystallized sahne compounds. The hydrochlorate yields 

 yellow precipitates with bichloride of platmum and terchloride of 

 gold. When exposed to the action of heat, ethylene-phenylamine 

 fuses at 148° C. ; at a temperature approaching 300° it begins to boil 

 and to distil, the larger portion undergoing decomposition. Among 

 the products of decomposition which are not yet sufficiently exa- 

 mined, considerable quantities of aniline make their appearance. The 

 results obtained in the analysis of ethylene-phenylamine lead to the 

 formula 



as the simplest molecular expression for this compound. 



This formula is confirmed by the analysis of the hydrochlorate 

 and of the platinum-salt, the preparation of which, on account of 

 their instability, requires some management. 



These salts contain respectively 



Hydrochlorate Cj„ H, N, HCl. 



Platiuum-salt C^, Hg N, HCl, PtCI^. 



The reaction which gives rise to ethylene-phenylamine is expressed by 

 the following equation : — 



2C,, H, N -1- C, H, Br, = C,, H, N, HBr -f C„ H; N, HBr. 



Phenylainiiie. Bil)roinitle Hydrobroraate Hydrobromate of 

 of ethylene. of phenylaiuine. ethylene-phenylamine. 



What is the constitution of this new base ? This question could not 

 be answered without further experiments, on account of the twofold 

 nature of bibromide of ethylene. In many cases this remarkable 

 compound exhibits the character of the hydrobromic ether of a 

 biaeid ethylene-alcohol, of (C^ H,)"Br.,, whilst in the majority of re- 

 actions it splits into hydrobromic acid and the bromide C^ H3 Br, 

 which might be considered as the hydrobromic ether of a monacid 

 alcohol, C, H, O.^, homologous to allylic alcohol. It remained there- 

 fore uncertain whether the new basic compound retained the original 

 molecule (C^ II,)" replacing 2 equivs. of hydrogen, or the modified 

 molecule C, 11, replacing 1 cquiv. of hydrogen. In other words, it 

 had to be established by further experiments, whether the base was 



C. 11, ] 



C„II, N = C,JT,N. 



" J 



F2 



