402 DR. E. FEANKIAMD’S RESEARCHES ON OEGANO-MTALLIC BODIES. 
p.oOably be easily converted into stannic ethide by bringing it 
Lbvl ■ and a preliminaiT experiment completely realized this expectation. Ihe reail 
oftt rlZ: together- Jth its extension to other analogous organo-metalhc bodies. 
are described in the following pages. 
I. Action of Zincethyl wpon Iodide of Stanethyl. 
About two ounces of crystals of iodide of stanethyl were gradually added to a strong 
soLn of zincethyl in ether. The crystals rapidly dissoh-ed. 
of beat and the liquid finally assumed a syiupy consistence. Caie was taken tyre 
ceased to effervesce with water. The syi-upy liquid was now subniitted 
Tt benan to boil at 70° C. ; but the thermometer rapidly lose tol \ . 
tempfrature and 200° C. the greater part of the product passed over, sohd iodide o zmc 
coS a little zincethylting left in the retort. The distillate on being rushed 
with water effervesced strongly, depositing oxide of zinc, w ici uas sso i 
addition of a little acetic acid. The dense ethereal liquid was 
supernatant aqueous stratum, and placed over chloride of calcium for 
On being distilled, the thermometer soon became stationary at 1 
late passing at this temperature was collected apait. 
Submitted to analysis it yielded the following results :— 
I. -2185 grm., burnt with oxide of copper and free oxygen, yielded d.ho gnn. 
carbonic acid and ’1703 grm. water. -, 04 c fov 
II -2338 nrm. gave -3518 grm. carbonic acid and -1845 grm. wate . 
m -0992 |™., placed in a" tream of oxygen, and the vapom thus mixed with excess 
of oxygen passed through an ignited tube, gave 0618 grm. bmoxide o m. 
Thele results correspond closely with the formula oi stannic ethide- 
as is seen from the following comparison 
Calculated. 
F ound. 
r 

I. 
II. 
III. 
Mean. 
r: 
48 
41-09 
41-09 
40-92 
— 
41-01 
V^g , 
TT 
10 
8-56 
8-64 
8-31 
8-48 
il-io . 
Su . 
58-82 
50-35 

— 
50-28 
50-28 
116-82 
100-00 
99-77 
following 
equation therefore expresses 
the action 
of zincethyl 
upon iodide of 
stanethyl 
Sn(C.i Hj) 11 _ f Sn(C4 H.,), 
Zn(C.H,)J IZnI 
Stannic ethide, or binethide of tin, is a limpid colourless liquid even at 13° C., 
