708 
ME. P. GRIESS ON A NEW SERIES OE BODIES IN 
a Diazonitrobenzol compounds *. 
Nitrate of Diazonitrobenzol , € 6 H 3 (N0 2 ) N 2 HNO s . 
The preparation of this compound by the action of nitrous acid upon a nitraniline 
differs in no way from that of the analogous bodies already referred to. By gradually 
adding ether to its alcoholic solution till crystallization commences, it is obtained in 
fine long needles, which, however, do not exhibit any distinct form of crystallization. 
This compound, like all the rest of the like bodies, is very readily soluble in water, 
more difficultly so in alcohol, and insoluble in ether, and explodes with the same 
violence on heating. 
Perbromide of a Diazonitrobenzol , € 6 H 3 (N9 2 )N 2 , HBr 3 . 
On mixing an aqueous solution of the former compound with bromine-water, this ? 
new body is speedily thrown down in slender orange prisms, which are almost insoluble 
in water, and scarcely soluble in ether. They dissolve, however, readily in warm alcohol, 
from which they are deposited, on cooling, in well-defined crystals. 
Platinum-salt of the Hydrochlorate of a. Diazonitrobenzol , € 6 H 3 (N0 2 ) N 2 , HC1, Pt Cl 2 . 
On the addition of chloride of platinum to a hot aqueous solution of the hydrochlorate 
of diazonitrobenzol, this double salt, which crystallizes in long yellow needles, is 
precipitated. On recrystallizing it from boiling water, in which it is soluble (although 
difficultly), the crystals are obtained as prisms, frequently very well formed. 
a Diazonitrobenzolimide, |n. 
This compound is prepared by the action of ammonia upon perbromide of a diazo- 
nitrobenzol, By repeated recrystallization from alcohol it may be obtained in a 
perfectly pure state in the form of very brilliant yellow, rounded plates, which are so 
soluble in hot alcohol that a magma of crystals separates on cooling from a saturated 
solution. The crystals dissolve as readily in ether. In boiling water they fuse, pro- 
ducing a yellow oil but slightly soluble in water, the portion dissolved yields very 
fine, almost white crystals on cooling. The fusing-point of the crystals obtained by 
recrystallization from alcohol was found to be 71° C. The substance explodes when 
heated a little above the fusing-point. 
0’3392 grm. of substance gave 0548 grm. of carbonic acid and 0805 grm. of water. 
* The a nitraniline employed for these experiments was obtained according to Arppe’s method, by the 
action of alkaline liquids upon nitrated anilides. 
The /3 nitraniline was prepared according to IIofmann and Muspkatt’s method, from dinitrobenzol by the 
reduction with sulphuretted hydrogen. 
