432 
ME. G. B. BUCKTON ON THE ISOLATION OF THE OEGANO-IMETALS, 
Theorr. Hean of experiment. 
1 equiv. of Lead 
8 equivs. of Carbon 
10 equivs. of Hydrogen 
103-5 
64-09 
48-0 
29-72 
29-68 
10-0 
6-19 
6-23 
161-5 
100-00 
Plumbic diethyl is a colourless and Umped fluid uith a famt odour very l^^e that o 
the other radicals described. The specific gravity is 1-62. It « soluble m u 
insoluble in water. It bums brightly, with abundant fumes of ^ of lead 
flame is somewhat differently coloured from that of the tin radical. The latter has an 
orange flame, with blue edges, whilst the former has a distinct but faint gieen tmge. 
with a border less luminous. 
It reacts violently on iodine and bromine, so much so as to convert the salts, which 
doubtless are first formed, into bromide and iodide of lead, men poiued mto chlorine 
it bursts, like the tin radical, into flam6. 
Chloride of Liplumlic Triethyl. 
With concentrated hydi-ochloric acid the organo-metal yields a crystalline salt wuth 
evolution of hydride of ethyl, but by this method it is not easy entirely to conieit t e 
The chloride is more conveniently formed by passing excess of hydiocliloric acid ^s 
into a tube containing plumbic diethyl moistened with aqueous acid. After a brisk 
effeiwescence, a solid mass is formed, which may be freely exposed to the an- until acid 
fumes cease to rise. From a solution in ether the crystals may be obtamed puie y 
spontaneous evaporation. 
L 0-6400 grm. of substance gave 0-5088 grm. carbonic acid and 0-2640 grm. water. 
II. 0-7077 grm. of substance gave 0-3240 grm. chloride of silvei. 
III. 0-5447 grm. of substance gave 0-4985 grm. sidphate of lead. 
The calculations for 100 parts, when contrasted with theory, ai-e 
Theory. 
Experimeut. 
2 equivs. of Lead . . 
12 equivs. of Carbon . 
15 equivs. of Hydrogen 
1 eqiiiv. of Chlorine . 
207-0 
62-85 
62-51 
72-0 
21-85 
21-69 
15-0 
4-55 
4-57 
35-5 
10-75 
11-32 
329-5 
100-00 
100-09 
This salt accordingly is the chloride of diplumbic triethyl, having the formula 
Pb, C., Cl, or Pb, (C, H,), Cl. 
It may be obtained in long colourless crystals, which have a strong penetrating odour, 
very similar to that of the correspondhig body in the tin series. It fuses between watch- 
