A Manual of the Chemistry of the Carbon Compounds

THE CARBON COMPOUNDS. 423
DIMBSim-METHANE CH
This compound is readily obtained by the action of sulphuric acid
on a solution of mesitylene, and formaldehyde, or methyl alcohol
and chromic trioxide in glacial acetic acid:—•
It crystallizes from ether in large mouoclinic prisms, melting
at 130°.
TBIPHENYL-METHANE
To prepare this hydrocarbon, meieiiry-diphenyl is heated with
benzylene dichloride to 150°.
CeH^CHCla + 2(C,,HB)2Hg = CH^H^ + 2C9H6HgCl
On evaporating its alcoholic solution, it separates out in large
lustrous crystals, melting afc 92°*6, It combines with benzene, forming
large transparent crystals, consisting of CHtCLEQg + C6Hg, and
melting at 76°. 'When this compound is exposed to the air, benzene
volatilizes, and the crystals become opaque and brittle. Triphenylmethane
does not combine with toluene.
DIPHENYIrDlETHINE
"When copper-ethinyl-benzene (page 885) is shaken with concentrated
alcoholio ammonia in presence of air, the following reaction
takes place :—
04» T + 2OuO
CJIC=C
Diphenyl-diethine crystallizes from alcohol i» long needles, melting
at 94°, it combines with bromine, forming a viscid octobromide
C4Br8(CQH5)8.
When phthalic acid is boiled with phosphorus pentachloride, it is
converted into yhthalyl chloride C9H4(COCl)j, which, when heated
with silver-dust, yields diphlkalyl, a crystalline solid, melting a little