N 4 j" B r. 



429 



by the following equation : 



lof"( C J I H nN]+5[(C 2 H 1 )''Br 2 ] = 



L a J J 



+ 6 ([(\H,)} N]Br) . 



The pentethylene-tetrethylated tetrammonium contains still 2 equi- 

 valents of replaceable hydrogen. By the action of iodide of ethyl 

 they may, although with difficulty, be removed and replaced by ethyl. 

 I have thus obtained successively the pentethylene-penthethylated 

 and, lastly, the pentethylene-hexethylated tetrammonium, 



and 



[(C 8 H 4 )/(C a H 5 ) 64) 



the composition of which was established by the analysis of the pla- 

 tinum- and the gold-salts. 



I have mentioned above, that the action of dibromide of ethylene 

 upon ethylamine produces occasionally also the hexethylene-tetrethyl- 

 tetrammonium. This substance may be obtained in a state of purity 

 by the action of dibromide of ethylene upon ethylene- diethyldiamine 

 and diethylene-diethyldiamine, 



(C 2 Hj 11 



[(C 2 Hj 11 I _,p TT \ ii 1 -1 iv 



(C fa H.) 8 | N 2 I +4 [(C 2 H J Br 2 ] = gg g* j M 4 J Br 4 



C 2 H 4 )] I" \ 

 C 2 H 5 ) 2 lN 2 Br 2 V 



+ 2 

 and 



N J +2[(Ca H ) " BrJ= 



The composition of the hexethylene-tetrethylated tetrammonium 

 was likewise established by the analysis of the platinum-salt and 

 gold-salt. 



The analysis of these salts completes my researches on the tetram- 

 monium conpounds. In a further paper I propose to examine the 

 ammonias of higher atomicity. 



