824 Friedel and Crafts on the combinations of 
e, and here the presence of silicon reveals itself in the 
ioiaoben, determining a point of weaker cohesion, which 
results in the rupture of the union between itself and the carbon 
of the atom of ethyl containing the chlorine. In these last men- 
tioned reactions, therefore, an analogy is apparent between 
silicic ethyd, and the other known compounds of organic radi- 
cals with metals. 
The chlorated silicic ethyd, whose boiling point was 210°- 
220°, was experimented upon, and the body was heated with an 
omg a acetate of potassium in alcoholic solution. open- 
tubes we found that the same gas was m off in 
aie abundance, whose production we have lve oa 
from the higher chlorated compounds which approach the mono- 
chlorated compound more nearly in their composition. In one 
operation we observed that the gas, which was first evolved, 
contained chlorine, and could be absorbed by bromine; this was 
not the case with the gas given off afterw ode 
In another operation, in order to obtain a clue to the reaction, 
we passed the gas into a solution of center wie of copper in 
ammonia, and th then into bromine. A small quantity of the 
cupric compound of olen and of the bromid of ethylene, or 
of chlorated ethylene, was formed. 
The principal product of the reaction was the same oxyd of 
silicic tniethyd, which was produced by the action of acetate of 
potassium on the bromated silicic ethyd. 
product was treated as before, with sulphuric acid to 
purify it, and the following analysis was made of it: 
i one cage gris. ; COy=0°4745 grms. ; H,O=02460 
1 Caloulatea for 0 { SUCHE 
C=58°55 58°58 
H=12°36 12°19 
It is possible that the formation of this compound may be 
represented by the equation 
2Si(GsH,),C,H,Cl, +.2K0,H,0, =2KCl1+0(0,H,0),+ 
20,H,C1+0 4 Stor 
The formation of acetylene red be due to the action of chlo- 
rated ethylene upon the acetate of potassium, according to the 
equation : 
_ GHCl+K C,H,0,=HCH,0,+KC1+ C,H, 
