A Manual of the Chemistry of the Carbon Compounds

THE CARBON COMPOUNDS, 131
oentrated sulphuric acid on mercury-ethyl ethane is formed, and
mercuric stdphakthide (CaH&Hg)2SOv crystallizing from alcohol in
large colourless plates.
ETHYL COMPOUNDS OF TIK.
Tin-ikthyl or Stannous Ethide /n H VSnl' 8 °^ ta i ne( i> together
with tin-triethyl, when an alloy of tm and sodium is heated with
ethyl iodide. It is a colourless, oily liquid, which on heating is decomposed
into metallic tin and stannic ethide. Stannous ethide is a
dyad radical. When exposed to the air it combines with oxygen,
forming stannic oxethide (CJH^JSUO, an amorphous white powder,
forming salts with acids. Stannous ethide also readily combines with
the elements of the chlorine group. The compounds thus obtained
crystallize well, and are soluble in water and alcohol; on adding a
caustic alkali to the solution, stannic oxethide is precipitated.
Tin-triethyl or Stannoso-stannic Ethide /n 2 HTS f *® a t ^- n ^1°"*
which is easily separated from stannous ethide; the latter being
readily soluble in alcohol, whilst tin-triethyl is insoluble; it is decom-
poaed on heating. With oxygen it forms the compound >Q 8 JJ 6 \ gn \ 0,
a white solid possessing a strong, penetrating smell, and forming
salts: thus, on adding hydrochloric acid the chloride (C2H5)3SnCl is
obtained, a liquid boiling at 210°, and possessing a very pungent
smell
Tin-Utrethyl or Stannic Ethide X ' y Sn is formed by the action
^2 5
of zinc-ethyl upon anhydrous stannic chloride or the chlorides
(CjH^jSnClj and (CsH6)sSnQl, as well as by heating stannous ethide.
It is a colourless liquid with a faint ethereal smell, boiling at 181".
It does not absorb oxygen, but is readily inflammable, and burns
with a bright lnminous flame. By the action of iodine it yields
ethyl iodide and stannic iodo-triethide (CyEQjSnl, and when it is
heated with fuming hydrochloric acid ethane escapes, and stannic
chloro-triethide is left behind.
Bill?!. CoMPOVNpS OF LEAP.
Lead-Utrethjl or Plumbic Ethide Q 2 g 6 V Pb is formed, together with
lead-tricthyl, by acting on lead chloride with zinc-ethyl:—
K 2