On the Properties of Teliuramyl and Selenmethyl. 245 
Arr, XXIX.—Investigations on the Properties of Telluramyl 
and Selenmethyl ; by F. Wouter and Joun Dean.* 
[Read before the American Academy, by Prof. Horsford:] 
1. Telluramyl. CicHs:Te. - 
TELLURAMYL Was prepared by a method analogous to that em- 
ployed in the preparation of tellurethy!; viz., by distilling tellurid 
of potassium with sulphamylate of lime. The combination is 
readily formed, though not so easily as in the case of the methyl 
compound, nor is it attended with so much frothing. By gently 
heating, yellowish vapors soon form, which condense to yellow- 
ish red drops of telluramyl, passing over together with water, 
under which it sinks. Soon however drops of undecomposed 
fusel oil are seen to accompany it, and we could not succeed in 
separating the two completely. The method which gave the 
hearest approach to success was the following: the mixture of 
telluramyl and fusel oil was dissolved in concentrated nitric acid, 
and as the fusel oil dissolved with much difficulty, the greater 
part of it could be volatilized before going into solution. Sul- 
phite of ammonia was then added, by means of which the tellur- 
amyl was reduced and precipitated in oily drops. It was separated 
from the fluid by distillation. The surface of the telluramyl 
obtained in this manner was invariably coated with reduced tellu- 
num. Towards the close of the original distillation, a thick, © 
almost solid matter was obtained, of somewhat darker color than 
the first distillate, which was probably a bitelluret. 
Three anal yses of different portions of telluramyl obtained as 
above gave the following results. 
we 44-4 39-5 38-3 36-1. 
Hii 8-1 74 8-2 69 
Te 47-5 37-0 35-4 oo 
100-0 83-9 81-9 
Ibis evident from these analyses that the substance analysed 
was Impure, 
The carbon and hydrogen of the first analysis agree very 
closely with the composition of the still unknown tellurbutyl 
*H»Te whieh would contain in 100 pts. 
ta From an Inaugural Dissertation, On the Organic Compounds of Tellurium and 
» By J. Dean, Gattingen, 1855. eee 
