A Comprehensive Treatise on Inorganic and Theoretical Chemistry

284 INORGANIC AND THEORETICAL, CHEMISTRY
platinite. The four-sided, prismatic crystals deliquesce in air, they melt at 100°
slowly giving off 9£ mols. of water. L. F. Nilson could not prepare indium chloroplatinite.
L. F. Nilson prepared thallous chloroplatinite, Tl2PtCl4, by mixing
warm soln. of thallous sulphate and an alkali or ammonium chloroplatinite. The
salt is recrystallized from boiling water, and dried at 100°. The salt is sparingly
soluble in boiling water. S. Meyer found the magnetic susceptibility at 20° to be
—0-205 X 10~« mass unit.
IJ. F. Nilson prepared cerous chloroplatinite, CeCl3.2PtCl2.10*5H2O, in thin,
four-sided prisms which lose 15 mols. of water at 100° ; lanthanum chloroplatinite,
2L.aCl3.3Pt012.18H2O, in thin, four-sided prisms, and also 2L.aCl3.3PtCl2.27H20,
in prisms which lose 16 mols. of water at 100° ; didymium chloroplatinite,
2.DiCl3.4PtCl2.2H2O, in prisms or plates which are deliquescent in air, and
2DiCI3.3PtCl2.18H20, in prismatic crystals ; erbium chloroplatinite, 2ErCl3.
2PtCl2.27H2O, in dark red prisms, which lose 17 mols. of water at 100°, and
2ErCl3.3PtCIo.24H2O, in long, four-sided prisms, which lose 11 mols. of water at
100°; yttrium chloroplatinite, 2YCl3.3PtCl2.24H20, in dark red, four-sided
prisms, which melt at 100°, losing 10 mols. of water ; thorium chloroplatinite,
2ThCl4.3PtCl2.24H2O, in rhombohedral crystals, which lose one-fourth of their
water of hydration at 100° without melting ; and zirconyl chloroplatinite,
ZrOCl2.PtCl2.8H2O, in quadratic prisms.
R. J. Kane obtained greenish-brown, deliquescent crystals of stannous chloroplatinite,
which are decomposed by water, and also a chloroplatinite with more
tin. This salt forms a red soln. in water, and the salt is hydrolyzed. Gr. B. Buckton
treated platinous tetramminochloride with an acid soln. of stannous chloride and
obtained stannous tetramminochloroplatinite, fPt(NH3)4]SnCl4, and likewise
stannic tetramminochloroplatinite, LPt(NH3)4]SnCl6. C. Rudelius obtained a
complex with propyl sulphide. J. Lang treated a soln. of lead nitrate or acetate
with potassium chloroplatinite and obtained lead chloroplatinite, PbPtCl4, as
a pale red, amorphous precipitate, which is decomposed slowly by boiling water.
G. 13. Buckton mixed soln. of platinous chloroplatinite and lead acetate, and
obtained four-sided plates of lead tetramminochloroplatinite, [Pb(NH3)4 JPtCl4,
which are not decomposed at 170° ; and are insoluble in hydrochloric acid, and in
alcohol.
L. F. Nilson obtained chromic chloroplatinite, 2CrCl3.3PtCl2.18H20, by
evaporating in vacuo the filtrate from a mixture of soln. of equimolar parts of
violet chromic sulphate and barium chloroplatinite. The red deliquescent
prisms lose water and hydrogen chloride at 100°. S. M. Jorgensen prepared
chromic hydroxychlorohexamminochloroplatinite, [Cr2(NH3)0(OH)2Cl3 J2PtCl4.
L. F. Nilson also obtained manganese chloroplatinite, MnPtCl4.6H2O, from
barium chloroplatinite and manganese sulphate. The crystals lose 4 mols. of
water at 100°. The crystals were examined by H. Topsoe and H. Christiansen.
L. F. Nilson obtained ferrous chloroplatinite, FePtCl4.7H20, from the filtrate
from a mixture of soln. of ferrous sulphate and barium chloroplatinite. The
deliquescent, dark red prisms lose 5 mols. of water at 100°. According to
G. B. Buckton, ferrous salts do not unite with platinous tetramminochloride, and
ferric chloride transforms it into platinic dichlorotetramminochloride.
Li. F. Nilson obtained cobalt chloroplatinite, CoPtCl4.6H2O, by evaporating,
over sulphuric acid, a soln. of hydrochloroplatinous acid saturated with cobalt
chloride. Crystals of cobalt chloroplatinate are first deposited, and" then crystals
of the chloroplatinite in four-sided or six-sided plates which are deliquescent in
moist air, and efflorescent in dry air. The salt loses 5 mols. of water at 100°.
N. S. Kurnakoff prepared cobalt hexammitiochloroplatinite, [Co(NH3)6]PtCl4,
in yellowish-red plates ; and also platinous tetramimnochlorocobaltite,
[Pt(NH3)4]CoCl4, from a mixture of soln. of platinous tetramminochloride
and cobalt chloride. The complexes cobaltous quaterpyridinochloroplatinite,
Co Py4PtCl4, and cobaltous trisethylenediaminochloroplatinite, Co en2PtCl4, were