A Manual of the Chemistry of the Carbon Compounds

186 THE CHEMISTRY OF
oily liquid, being formed. On heating trietbylarsine with sulphur,
the sulphide AaStCgHg) is obtained, which crystallizes in large
prisms. Triethylarsine also readily combines with ethyl iodide to
form tetrethyla.rm.vwm iodide Aa(C2H6)4I, a salt which with moist
silver oxide yields the hydroxide, a colourless, deliquescent mass,
and a very powerful base.
Arsendiethyl or Ethyl-cacodylX /WQJJ 6 ^ ** a yellowish liquid
possessing a most intolerable smell, boiling at about 190°, and
taking fire in the air. It combines directly with sulphur and with
the elements of the chlorine group. By admitting air gradually to
an alcoholic solution, ethyl-cacodylic add * 2 6 \r [ 0 is formed,
crystallizing in deliquescent plates. It has a sour taste and forms
crystalline salts, which are soluble in water.
Arsenmonethyl compounds have not yet been obtained.
ANTtMOSY BASES OF ETHYL.
TriethyhHUne or Stibethyl Sb-J C2H6 is obtained by heating ethyl
iodide with an alloy of potassium and antimony (ShK3) in an
atmosphere of carbon dioxide. It is a heavy, mobile, colourless
liquid, boiling at 158 8 , and possessing a powerful odour resembling
that of onions. Exposed to the air it takes fire, but when it is
slowly oxidized in an alcoholic solution, atibethyl oxide S^CJH^JO is
obtained, a visoid mass, readily soluble in water and combining with
acids. On adding hydrochloric acid to its solution, stibethyl chloride
StyCjB^jClg is precipitated, a colourless liquid, which smells like
turpentine, and is also formed by the direct union of stibethyl and
chlorine.
Telrethyklibonium Iodide StyCgH^I forms larger transparent
crystals; it is readily acted upon by silver oxide and water; the
hydroxide thus formed is a thick, strongly alkaline liquid.
BiaSIUTH BASES OF ETHYL.
Triethylbimuthine Bi-1 C,H6 is obtained by the action of ethyl
S a 6
iodide upon an alloy of bismuth and potassium; it is a heavy colour*
less liquid, possessing a disagreeable smell, and resembling triethylstibine
in most of its properties, its compounds, however, being less
stable than those of the latter. On adding mercuric chloride to its