DE. A. W. HOEMAISTN’ ON THE PHOSPHOEUS-BASES. 
515 
II. 0'4680 grm. of di-iodide gave 0'4891 grm. of iodide of silver. 
The formula is accordingly 
^10 
H^ePNI 
(C,H,)3 pn" 
Theory. 
A 
Experiment. 
r 
^10 
120 
26-97 
r- ^ 
I. II. 
H 26 
26 
5-84 
p 
31 
6-97 
N 
14 
3-14 
3-14 
I 2 
254 
57-08 
56-48 
445 
100-00 
The caustic base, which corresponds to the iodide, is readily obtained by oxide of silver. 
It presents considerable stability, and may be evaporated on the water-bath until it sepa- 
rates in hea’ry oily globules. Here again the action of heat might have given rise to the 
formation of a volatile phosphamine, 
(C,H,) IPN, 
capable of reproducing the salts from which it was derived. But, exactly as in the case 
of the compound formed by the coalescence of triethylphosphine and ammonia, distilla- 
tion destroys the base. The deportment of this substance under the influence of heat is 
characteristic ; its study cannot fail to assist in the general elucidation of the constitution 
of this class of bodies. 1 may, in a subsequent inquiry. And an opportunity of returning 
to this question. 
Both methylamine and ethylamine being primary monamines, I have, in conclusion, 
submitted the bromethylated bromide to the action of a secondary base, viz. dieth} 1- 
amine, and lastly, of some tertiary bases, viz. trimethylamine and triethylamine. 
Action of Diethylamine on the Bkomide of Bromethtl-teietiiylphosphonium. 
Compounds of Ethylene-pentethylphosphammonium. 
The reaction is similar to that of ethylamine ; the resulting product, conveniently 
treated, yields a splendid platinum-salt crystallizing in rectangular plates. 
Two platinum-determinations furnished the following results : — 
I. 0-4900 grm. of platinum-salt, treated with hydrosulphuric acid, &c., gave 0-1557 
grm. of platinum. 
II. 0-6280 grm. of platinum-salt, analysed in the same manner, gave 0-1990 grm. of 
platinum. 
3 Y 2 
