A Comprehensive Treatise on Inorganic and Theoretical Chemistry

260 INORGANIC AND THEORETICAL, CHEMISTRY
soln. P. Schtttzenberger and D. Tommasi described platinous biscarbonyldiamminochloride,
[Pt(NH3) 2(CO)2]Cl2.
E. A. Hadow, and S. M. Jorgensen obtained a double salt, platinous tetramminodlnitratotetramminochloroplatlnate,
2[Pt(NH3)4]PtCl4.[Pt(NH3)4(NOa)2]PtCl4 ; and the triple
salt, platinous tetramminosulphitochloroplatinite, 2[Pt(NH3)4]Cla.PtSO„.PtCla. A. Cossa,
and S. M. Jorgenson obtained platinous tetramminotrlchloroamminoplatlnlte, [Pt(NH3J4]-
TPt(JSrU8)Cl3I8 ; S. M. JOrgensen, platinous tetramminotrichloroethylamineplatinite,
[Pt(NH3)4][Pt(C2H6NH2)Cl3]2; platinous tetramminotrichloropyridlneplatinlte, [Pt(NH8)4].
[Pt(C6H6N)Cl3]2 ; platinous tetramminotrichloroethyleneplatinite, [Pt(NH3)4][Pt(C2H4)Cl3]a ;
and platinous tetramminotrichloroallylalcoholoplatinite, [Pt(NHg)4][Pt(C3H5OH)Cl3Ia.
Iu. Tschugaeff and I. Tscherniaeff prepared derivatives of platinous aquotriamminochloride,
[Pt(NHg)3(H2O)]Cl2, by passing air through a soln. of the dihydroxylaminoamminochloride
containing ammonia and ammonium sulphate, or any other
sulphate, and a trace of a copper salt. The colourless precipitate—possibly
(NH3)4Pt....(OH)2—Pt(NH3)4—is soluble in warm dil. sulphuric acid, and when
the soln. is treated with platinous chloride, platinous aquotriamminochloroplatinite,
[Pt(NH3)3(H20) JPtCl4, is formed in green needles. When this salt is
warmed with hydrochloric acid, or a soluble chloride, it forms the chlorotriammine,
[Pt(NH3)3ClJ2PtCl4.
A. Cossa 5 prepared platinous chlorotriamminochloride, [Pt(NH3)3Cl]Cl, from
a mixed soln. of the corresponding nitrate and cone, hydrochloric acid by cooling
it with ice, drying the crystals between bibulous paper, recrystallizing from aq.
soln., and drying at 100°. P. Klason heated a mixture of equimolar proportions
of platinous tetramminochloride and hydrochloric acid at 108°, allowing the
platinous frems-dichlorodiammine to crystallize out, then added potassium chloroplatinite
to precipitate the unchanged tetramminochloride from the boiling soln.,
and there remained the chlorotriamminochloride. P. Klason obtained a bad yield
by treating the c*\s'-dichlorodiammine with ammonia. A. Cossa prepared the salt
by adding ammonia to green platinous tetramminochloroplatinite, platinous cisor
Zraws-dichlorodiammine, or to platinum trichlorotriammine ; and he recommended
mixing a boiling soln. of platinous chlorotriamminochloroplatinite with a
soln. of platinous tetramminochloride, filtering, and evaporating for crystallization.
The salt appears in colourless scales or prisms which, according to A. Cossa, belong
to the monoclinic system. A. Werner and A. Miolati found that the mol. conductivities
of a soln. of a mol of the salt in 250, 500, IOOO, and 2000 litres of water,
are, respectively, 101-0, 107-6, 115-8, and 127-8. The constitution of the salt was
discussed by P. T. Cleve, and P. Klason. P. Klason found that the salt is hydrolyzed
in aq. soln. P. T. Cleve observed that chlorine converts it into [Pt(NH3)3Cl3JCl ;
A. Cossa, that hydrochloric acid forms platinous cis-dichlorodiammine, and
ammonia furnishes platinous tetramminochloride. The salt is insoluble in alcohol.
P. Klason noted the formation of the complexes platinous chloroethylsulphodiamminochloride,
[Pt(NH3)2(SC2H5)Cl] ; and platinous bisphenylsulphodiammine,
[Pt(NH3)2(SC6H6)2J. P. T. Cleve noted that potassium chloroplatinite forms
platinous chlorotriamminochloroplatinite, and A. Cossa, that sodium chloroplatinate
forms platinous chlorotriamminochloroplatinate.
M. Peyrone obtained a small yield of platinous chlorotriamminochloroplatinite,
or Cleve s salt, [Pt(NHa)3ClJPtCl4, by adding ammonium carbonate to a very
dilute, neutral, boiling soln. of platinous chloride. P. T. Cleve treated a
hydrochloric acid soln. of platinous chloride with ammonia and found that
insoluble platinous chlorotriamminochloroplatinite, and tetramminochloroplatinite
and soluble platinous tetramminochloride and chlorotriamminochloride were
formed, and he also obtained it from soln. of platinous triammino-salts and
platinous chloride. Li. Ramberg obtained it by the action of ammonia on potassium
chloroplatinite in the presence of ammonium chloride. A. Cossa heated a soln. of
10 grms. of platinous tetramminochloride in 50 c.c. of water with 75 c.c. of hydrochloric
acid of sp. gr. 1-198 at 20°, in a reflux condenser in boiling water, filtered