500 
DE. A. ^Y. HOEMAXX OX THE PHOSPHOEUS-BASES. 
action be diminished by admixture of alcohol, a white crystalline mass is obtained con- 
sisting almost entirely of the hydriodate of the phosphorus-base. 
If the compounds 
[(C,H4l)(C,H5)3P]I and 
„ »(C.2H3)3P 
are likewise formed, they must be present in extremely small quantities only. The 
crystals, dissolved in water and decomposed by baryta, left, after the triethylphosphine 
had been removed by ether, the iodine by oxide of silver, and the baiwta by means of 
carbonic acid, scarcely traces of an organic compound. The triethylphosphine evidently 
acts upon iodide of ethylene just like an alcoholic solution of potassa, the chief phase of 
the reaction doubtless consisting in the transformation, 
(C2 H5)3 P -f (C2 HJ" I, = [(C, n,), H P] I + C, H3 1. 
I should not omit to mention, however, that the production of iodide of vinyl (C2 H3 1) 
was not demonstrated by a special experiment. There was some probability of an 
iodethylated triethylphosphonium-compound being formed by the action of iodide of 
phosphorus on the chloride or iodide of the oxethylated metal ; but these bodies do not 
act on one another. 
Hybrids of ETHTLEXE-DiPHOSPHOxirM. 
In a former paragraph, I mentioned as a fact of peculiar interest, the formation of 
the dibromide of hexethylated ethylene-diphosphonium by the reaction 
' w(C 2H3)3P7 
(C2H3)3PJ 
The study of this reaction natmully led me to try that of trimethylphosphine on 
the bromide of bromethylated triethyl phosphonium, which I had a right to expect would 
thus be converted into the dibromide of ethylene-trimethyl-triethyldiphosphonium : 
[(C2 H4 Br) (C2 113)3 P] Br -f (C^ li,), P = 
{c,-R,r 
Br., 
[(C2 H4 Br) (C2 H3)3 P] Br + (C H3)3 P = 
H3)3P-’" 
(C2H4) (C2H5)3pJ ^ - 
Actiox of Trimethylphosphixe ox Bromide of Brometiiyl-trietiiylphospiioxium. 
These two bodies act upon eacii other with the greatest energy, and moreover exactly 
in the manner indicated by theory. The resulting compound was, of course, examined 
only as far as necessary to establish the character of the reaction. The bromide of the 
hybrid diphosphonium is more soluble than the similar diphosphonium-coinpound pre- 
viously described, which in other respects it greatly resembles. Oxide of silver eliminates 
the extremely caustic base, 
P H p n (0113)3(0, 
'-"11 
which yields with hydrochloric acid and di chloride of platinum, a pale-yellow platinum-salt, 
H,).PT 
