426 ME. G. B. BVCKTOHs ON THE ISOLATION OE THE OEGANO-METALS, 
result places beyond a doubt the composition of the salt, and moreover confirms the 
last analysis of the bromide. 
Chloride of stanethyl, Sn Cl, requires— 
Theory. 
A 
Experiment, 
1 eqniv. of Tin 
59-0 
47-77 
19-34 
4 equivs. of Carbon . 
24-0 
19-43 
5 equivs. of Hydrogen 
5-0 
4-05 
4-32 
1 eqniv. of Chlorine . 
35'5 
28-75 
123-5 
100-00 
It is immaterial whether the bromine be added to the radical, or the radical to the 
bromine. In both cases the salt of the same radical is formed. If, however, bromine 
be placed under water, and the vessel be carefully cooled, evolution of gas may be almost 
entirely prevented. In this case ethyl in its nascent state is presented to free bromine, 
and bromide of ethyl is produced, which may be readily detected by distillation. 
The reaction is in strict accordance with that set forth when describing the mercimc 
radicals. . 
Steeckee has lately shown* with much prohahility, that some of the organcs amue 
bodies prepared by Lowio may be referred to double salts of comparatively simple for- 
mula, the analogues of which may be found in the inorganic oxyacdides and “1 
rides of tin. From the method employed by Lowio in forming the stanethyls, -nz. by distil- 
ling iodide of ethyl with an alloy of tin and sodium disseminated through said, it may- 
be easily supposed that a partial reduction only of the iodides of stanethyl is eftectei . 
The following experiments prove that various bodies are foimed uhen zincet n am 
bichloride of tin react on each other in different proportions, their constitution vary ing 
with their more or less complete reduction by the zincethyl. Bichloride of tm produces 
oreat heat when dropped into zincethyl. If the thi-salt he in excess, an impure chlo- 
ride of stanethyl is formed; if the zincethyl be in excess, the radical stannic dietliy is 
formed; ivhilst, lastly, if the zincethyl be present in quantity insufficient for the last 
reaction, that is, less than sufficient to remove the whole of the chlorme, the 1’™" 
duct is an oily body, which possesses the pungent and irritating odour before alluded to. 
This pungency, which produces continued sneezing, entirely disappears on adding zmc- 
ethyl to saturation. It is insoluble in water, inflammable, and is clearly a stanethyl 
chloride In its chief properties and behaviour it accords with the liquid descri le y 
Lowio, and named by him “ chloride of methylo-stanethyl,” the formula of which is 
SUo Ci2 Hi 5 Cl. , 1 1 i. • 
Experiments were then commenced under an impression that the substance in ques- 
tion might prove to be a double compound of stannic diethyl and chloride of stannic 
ethyl, or, faiUng that, the liquid might result from a union of three molecules of stannic 
diethyl with one of bichloride of tin, 
* IiTebig’s Anu.ileu, cv. p. 306, 
