Royal Society of Edinburgh. 



321 



consistence it slowly solidified into a mass of fine needle-shaped 

 crystals, which were the hydrochlorate of a new base, to which I 

 give the name of Phosphaniline. 



The crystals were well pressed between folds of filter paper, and 

 then being placed on a filter, were washed with a very small quantity 

 of alcohol and ether ; again dissolved, and evaporated as before, the 

 crystals were pure. The substance so obtained dissolves easily in 

 water, alcohol and ether, and is neutral to test-papers. G-ently heated, 

 it sublimes, and gives fine prismatic crystals. Treated with solu- 

 tion of potash it is decomposed. Strong sulphuric acid expels 

 hydrochloric acid, and gives a colourless solution. Nitric acid 

 oxidises it, and gives a coloured solution. 



On analysis, it yielded the following results : — 



I. II. Theory. 



Carbon, . . 4512 ... 44-63 



Hydrogen, 

 Phosphorus, 

 Nitrogen, 

 Chlorine, 



4-94 ... 4-34 



24-82 25-89 25-40 



This analys's shows that the substance is produced by the direct 

 union of the chloride of phosphorus and aniline. It is, however, 

 a hydrochlorate, and is formed from three equivalents of aniline, 

 in which three equivalents of hydrogen are replaced by phosphorus: 

 thus — 



Ce [ P'" \^ V+ 3HC1 



<^i8 H,, PN^+3HC1. 



Platinochloride of Phosphaniline. — A portion of the original salt 

 was dissolved in water, the solution acidified with hydrochloric acid, 

 and bichloride of platinum added, in a short time crystals began to 

 appear ; these, after a sufficient quantity had formed, were placed 

 on a filter and washed with a small quantity of alcohol and ether, 

 and dried over strong sulphuric acid, until their weight was con- 

 stant. They were in the shape of small granular crystals of a light 

 yellow colour, soluble in alcohol and water, but not in ether. On 

 analysis, the following numbers were obtained : — 



I. II. III. Theory. 



Carbon, 23-52 ... ... 23-33 



Hydrogen, 2-40 ... ... 2-35 



Phosphorus, 



Chlorine, 



Nitrogen, 



Platinum, ... 32-23 32-73 31 98 



The platinum in the third column was estimated by direct igni- 

 tion, the high result obtained was probably owing to the formation 

 of a little phosphide of platinum. 



The analysis corresponds with the following formula : — 



Ci, H,, F" N3 3HCl+3PtCl, 



