A Manual of the Chemistry of the Carbon Compounds

194 THE CHEMISTRY OP
with silver oxide and water yields the corresponding hydroxide, a
strongly alkaline and caustic substance.
Diethenediamine (CjH^^IL boils at 170°, and combines, like
ethenediamine, with two equivalents of an acid, forming crystallized
salts. The two hydrogen atoms in the groups NH can also be replaced
by alcohol radicals.
3'rietlicnediamine (C^H^jNg boils at 210°, and combines with ethene
dibromide to form tdntfane-ammonium dibrom,ide N^CjH^Brj.
The triauiines of the monad alcohol radicals act upon ethene
dibromide in a peculiar manner. Thus trimethylamine and ethene
dibromide readily combine, and form monobrmethyl4rimtiM/lammonium
brornvk C^B^CH^jNBr; nascent hydrogen converts this
compound into ethyl-trimethylammonium bromide C8H5(CHj)8NBr,
and by the action of moist silver oxide it yields choline:—
+ Ag8 + H9O =
PHOSPHOETJS- AND ABSENIC-BASES OF ETHBNE.
Txiethylphosphine combines with ethene dibromide, forming two
compounds according to the relative quantities of the two constituents
:—
Triothylbromethylphosphoniuiubromide CJ
Hexethyl-ethenediphosphonium. dibvomide
The monobromide crystallizes in regular dodecahedrons; on
heatiug its aqueous solution with silver chloride it yields the
compound CoH^Br^H^PCl, but by acting on it with moist silver
oxido all tW bromine is replaced by hydroxyl, and the amniooinni
base c « H «C 0H )( C 2 H a)^ I o is famed, the coastitution of which is
analogous to that of choline.
The second bromide corresponds to the compounds formed by
uniting ethenediamine with the iodides of monad alcohol radicals.
Triethylarsiue acts upon otbene dibromide in a similar manner as
tuo phosphorus-base.