On Compounds derived from Ammonia and its Analogues. 149 



F I 

 Chlorida of Auio-iirsethylium . . .. ^^ >As CI. 



E J 



Au^ 

 -p I 

 Chloride of x\uro-:tlbethylium -p, >&b CI. 



The complementary products formed in these reactions remain in 

 the mother-liquors of the several salts, from which they separate in 

 the form of oily compounds which gradually solidify into crystalline 

 masses. These I have not yet examined. 



A glance at the above formulae shows that the new compounds 

 which form the subject of this note correspond to the chloride of 

 platammonium, 



Pt] 



IJVnci. 



It remains to be ascertained whether the chloride of plato-dia^n- 

 monium, 



Pti 



iOnJJ Inci. 



H 

 II 

 H 



is likewise represented in the phosphorus-, arsenic-, and antimony- 

 series. 



" On a New Series of Compounds derived from Ammonia and its 

 Analogues." By Edward Fraukland, Ph.D., F.R.S. 



Although zincethyle and its homologues are now well known to he 

 capable of replacing electro-negative elements by ethyle, &c., yet it 

 could scarcely have been anticipated, that substitutions of an almost 

 opposite character would be effected by the same reagent ; neverthe- 

 less I find that zincethyle is capable of removing one of the atoms of 

 hydrogen in ammonia and its analogues, and of replacing it by zinc, 

 thus forming a series of bodies which strongly remind us of the 

 amide and nitride of potassium. The general nature of this reaction 

 by wliich the compounds described below are produced, may be tluis 

 ex])ressed : — 



When dry ammoniacal gas is passed through an ethereal solution 

 of zincethyle, it is rapidly aljsorbed, and soon afterwards torrents of a 

 combustible gas free from nitrogen begin to be evolved, .\fter the 

 current has been continued for more than an hour, the absorption 

 altogether ceases, and the ethereal liquid deposits a copious white 



