DE. A. W. HOFMANN ON THE PHOSPHOEUS-BASES. 
511 
The formula 
Cg P Au Cl, = [(C,H 3 ) (C^ H,), P] Cl, Au Cl, 
requires 39-24 per cent, of gold. 
The deportment of the bromethylated bromide under the influence of ammonia, 
opens an almost unlimited series of diatomic nitrophosphoretted metals. It is only 
necessary to replace in the above reaction the ammonia by a monamine, in order to 
obtain a new metal of almost any composition which could be desired. I have pro- 
duced a few bodies of this description, in order to establish experimentally the relations, 
which theory, resting on the observations in the ammonia-reaction, sufficiently suggests. 
Action of Methylamine on the Beomide of Bkomethyl-teiethylphosphonium. 
Compounds of Ethylene-methyl-teiethylphosphammonium. 
Repetition of all the phenomena observed in the experiment with ammonia. Both 
substances unite on digestion, 
[(C, H, Br) (C, Hj), P] Br + (C HJ H, N = 
Hy,(C.H5)3 P^» 
and the compound yields, on treatment with oxide of silver, the caustic base 
C, P N O3 = HJ" (C H3) (C 3 H3)3 H3 P 
I have been satisfied to fix the composition of this body by the analysis of a rather 
difficultly soluble platinum-compound, crystallizing from boiling water in splendid 
needles, frequently an inch in length. I did not succeed, however, in obtaining, either 
from boiling water or from boiling hydrochloric acid, crystals which could have been 
determined. For analysis the salt was recrystallized from boiling water. 
0-3734 grm. of platinum-salt, treated with hydrosulphuric acid, &c., gave 0-1250 grm. 
of platinum. 
The formula 
requires 
Theory. 
A 
Experiment 
1 equiv. of Phosphammonium 
... 177 30-13 
2 equivs. of Platinum . 
. . . 197-4 33-60 
33-48 
6 equivs. of Chlorine . . . 
... 213 36-27 
1 equiv. of Platinum-salt . 
. . . 587-4 100-00 
Action of Ethylamine on the Beomide of Beomethyl-teiethylphosphonium. 
Compounds of Ethylene-teteethylphosphammonium. 
The two bodies unite with evolution of heat. Since the salts of the new phospham- 
monium crystallize very beautifully, I have not been able to resist the temptation 
of examining several of them somewhat more minutely. 
