216 PROCEEDINGS OF THE AMERICAN ACADEMY 



Monorthobrombenzylamine, C G II 4 BrCH 2 NII 2 , is a colorless oil, in- 

 soluble in water, but soluble in ether, which absorbs carbonic dioxide 

 from the air very readily, becoming converted into the carbonate. 



The carbonate, made most easily by allowing an ethereal solution 

 of the free base to evaporate in the air, forms small white crystals ; 

 melting-point, 95° ; and is soluble in water and alcohol. 



The chloride, made by adding hydrochloric acid to the carbonate, 

 crystallizes in white radiating needles, or from alcohol in small 

 curled needles ; melting-point, 208° ; and is soluble in water and 

 alcohol. 



The chlorplaiinate, (CJI 4 BrCH 2 NH 3 ) 2 PtCl 6 , is precipitated on add- 

 ing chlorplatinic acid to the free base ; an analysis gave 



0.1990 gr. of substance gave 0.0505 gr. Pt. 



Calculated for [C-HgBrNHglaPtCle. Found. 

 Platinum 25.16 25.38 



It forms indistinct orange-yellow needles, sparingly soluble in water, 

 decidedly so in alcohol, and insoluble in ether. 



The Diorthobrombenzylamine was made by treating the chlorplati- 

 nate with sulphuretted hydrogen, washing the chloride out of the 

 platinic sulphide with hot alcohol, and precipitating the free base with 

 sodic hydrate from the solid chloride. In this way an oil was obtained, 

 which solidified after some time in well-marked rhombic crystals, with 

 an agreeable smell, melting at 36°, and soluble in all the ordinary 

 solvents, with the exception of water. 



Diortliobrombenzylamine Chlorplatinate, [(C G H 4 BrCII. ) ) 2 NIT, ) ] 2 PtCl 6 , 

 prepared as already described, was purified by washing with alcohol 

 and water, dried at 70°, and analyzed. 



0.5840 gr. of the salt gave 0.1030 gr. Pt. 



Calculated for [(C 7 II (i Br) 2 NH 2 ] 2 PtCl 6 . Found. 

 Platinum 17.58 17.G6 



A yellow obscurely crystalline precipitate, slightly soluble in water 

 and alcohol, insoluble in ether. 



The chloride made by adding hydrochloric acid to an alcoholic solu- 

 tion of the free base separates out as the alcohol evaporates in groups 

 made up of a few radiating white needles, which melt at 166°, are 

 but slightly soluble in cold water, more soluble in hot and in alcohol, 

 sparingly in ether. 



Triorthobrombenzijlamine, (C II 4 BrCII 2 ) a N, gave the following re- 

 sult on analysis : — 



