526 
DE. A. W. HOFMAXX OX THE PHOSPHOEUS-BASES. 
AESAMMOXIUM-COMPOrXDS. 
Bromide of bromethylated triethylarsonium, as might have been expected, is capable 
of fixing ammonia and the monamines, giving rise to the formation of a series of com- 
pounds not less numerous than the bodies mentioned in the phosphammonium-series. I 
have been satisfied to study the action of ammonia upon the bromide. 
Bibromide of Ethylene-triethylarsammonium . — Eeaction complete in two hours at 100'’. 
The product contains the bromide 
Cg H 22 As N Br 2 
which was converted, by means of oxide of silver, into the stable caustic base 
the composition of which was determined by the analysis of the platinum- and gold-salts. 
Flatinum-salt . — Needles difficultly soluble in boiling water, soluble in boiling con- 
centrated hych’ochloric acid, from which well-formed crystals are deposited. 
0-4650 grm. of platinum-salt, treated with sulphuretted hydi'ogen, gave 0-1475 gnu. 
of platinum. 
The formula 
C8H22AsNPt2Cl6 = 
Cl.,2PtCl3 
requires 
Theory. 
* 
Experiment 
1 equiv. of Arsammonium . . 
. . 207-0 
'i 
33-53 
2 equivs. of Platinum .... 
. . 197-4 
31-97 
31-72 
6 equivs. of Chlorine .... 
. . 213-0 
34-50 
1 equiv. of Platinum-salt . 
. . 617-4 
100-00 
Gold-salt . — ^Yellow compound precipitated from the dichloride obtained in the pre- 
vious platinum-determination, on adding a solution of trichloride of gold. Soluble in 
hydrochloric acid, deposited from this solution in golden-yellow plates. 
0-3505 grm. of gold-salt, treated with sulphuretted hydi-ogen, &c., gave 0-1550 grm. 
of gold. 
The values corresponding to the formula 
are 
C8H22ASNAU2 Cl 8 = 
.(C2H5)3As- 
H, N 
Cl,, 2 Au CL 
Theory. 
1 equiv. of Arsammonium 
. 207 
23-39 
2 equivs. of Gold .... 
. 394 
44-52 
8 equivs. of Chlorine . . 
. 284 
32-09 
1 equiv. of Gold-salt . . . 
. 885 
100-00 
Experiment. 
44-22 
