316 Friedel and Orafts on the combinations of 
L Boiling-point=120°-140° in vacuo. Substance=0°4600 grms. 
Ag Br=0%53860 grms. 
z Calculated for SiCgHigBre. 
Br=48-70 52°98 
Not succeeding in obtaining a pure monobromated silicic 
ethyd, we heated the first product analyzed with acetate of 
silver with the intention of obtaining an acetate, and finally of 
obtaining from the acetate by saponification with caustic 
an alcohol. The formulas of the bodies thus sought 
are, SiC,H C,H,O, and‘SiC,H HO. Neither of them, how- 
ever, were produced, and we obtained no better result by heat- 
ing the bromated product to 200° with an alcoholic solution of 
acetate of potassium. treatment with caustic potash of 
the product which had been heated with salts of acetic acid 
failed to extract the slightest trace of acetic acid, showing that 
no acetate had been formed and the principal body which was 
obtained was the oxyd, O | SCH whose formation we had 
5/3 
ready noticed in the preparation of silicic ethyd. This pro- 
duct boiling at 228°-231° was analyzed. 
L Boiling-point=228°-231°. Substance= 0-2222 grms. ; C= 
0°4743 grms. ; H,O=0-2417 grms. 
We found that the same oxyd was produced, whether the 
bromine were removed from the bromated silicic ethyd by 
treatment with acetate of silver, acetate of potassium or caustic 
potash. An analysis was made of a product which was ob- 
tained by heating the bromated silicic ethyd repeatedly with 
solid caustic potash, and which boiled at 230—235°. 
IL. Boiling-point=280°-235°. Substance=0'3305 grms.; H,0 
=0°3660. 
to. Il. Calculated for 0 | “ OH 
C=5821 58°75 5854 
H=12°09 12°30 12°19 
The last product was not entirely pure but contained a trace 
of bromine, and it is very difficult to remove the bromine com- 
pletely from the bromated product, even by a prolonged action 
of solid caustic potash. Several analyses which were made of 
the liquid, Te Swe not been treated so long a time with 
caustic potash, showed that it still contained a considerable 
quantity of bromine. : 
_ It appears from these data that the bromated silicic ethyd, 
when treated with substances containing oxygen combined 
intel hanes A 4 
strong affinity for bromine, loses the atom 
