A Comprehensive Treatise on Inorganic and Theoretical Chemistry

386 INORGANIC AND THEORETICAIi CHEMISTRY
PPt(NJEIa)8(SC8II6)I] ; L. Bamberg prepared platinous diiodobisbenzonitrile, [Pt(C6H8.
CN)8I2], and he prepared platinous diiodobisphenylcarbylamine, [Pt(C«H5.NC)8I2,] and
platinous triiodophenylcarbylamine, [Pt(C6H6NC)I6I ; G. Wallin, platinous dilodobisamldoacetate,
[Pt(NH,.CH,.COOH)2I,l; P. Klason, platinous lodomercaptanodlammlne, [Pt(NH8)-
(C8H6S)T] ; Iw. A. TschugaefE and co-workers prepared platinous methylcarbylaminebydrazinolodide,
L(CH8NC)8Pt(N8Ha)8Pt(CH8NC)8]I8; and platinous ethylcarbylaminohydrazinolodide,
f(C8H6NC)8Pt(N8H3)8Pt(C8H6NC)8]I8. J. Petren prepared platinous dliodoblsethylselenlne,
[Pt{(C8H6)8Se>8I8], platinous diiodopyridineethylselenine, [Pt(C6H6N){(C8H6)8Se}I8],
and platinous diiodoethylsulphlneetnylselenlne, rPt{(C8H6)8S}{(C8H6)8Se}I8]; H. Londahl,
platinous bisethylenesulphineiodlde, [Pt{(C8H4)8S8>]I8 ; and R. Bunsen, and K. A. Jensen and
E. Frederiksen, platinous diiodocacodyloxide, [Pt{As8(CHs)40}I8]. K. A. Jensen studied the
dipole moments of some iodosulphines, and of the phosphines ; he also prepared the cisand
trans- platinous dilodobistrlethylphospnines, [Pt{(C8H6)3P}8I8] ; and trans- platinous diiodoblstriethylstibine,
[Pt{(C8H6)8Sb}8I8].
R. Klement prepared potassium iodoplatinite, K2PtI4, analogous with the chloroplatinite
and gave 172-5 for the mol. vol.
According to R. J. Kane, when a dil. aq. soln. of platinic chloride is mixed
with an excess of potassium iodide, and the precipitate washed free from potassium
chloroplatinate by hot water, and then dried, there remains black platinosic
iodide, or platinum triiodide, PtI3. G. Clementi used warm soln. R. Klement
gave 7-414 for the sp. gr. at 25°/4- 0 and 77-7 for the mol. vol. R. J. Kane observed
that the fciiodide gives off iodine at 121°, and all the iodine is expelled below redness.
Cold water has no action on the salt, but boiling water extracts some iodine. Cold
hydrochloric, sulphuric, and nitric acid have no action on the salt. An aq. soln.
of potassium iodide and hydriodic acid dissolve the salt to form a wine-red soln.
Aq. ammonia colours the salt green, brown, and red. Alcohol, and ether have no
action on the salt. Potash lye dissolves the salt forming a yellowish soln. which
becomes pale red when neutralized with nitric acid, and colourless with an excess
of acid. The alleged triiodide is thought to be a mixture of platinous and platinic
iodides formed by the partial decomposition of the platinic iodide by the hot water.
P. T. CIeve reported a number of what may be platinosic iodoammines. For instance,
platinosic ennealodoctammine, 7PtI8.PtI4.16NH3, or Pt4(NH3)8I„ was obtained as a black
powder by the aetion of soda lye on platinosic pentaiodotetrammine, Pt2(NH3J4I5, or
3Ptla.Ptl4.8NH8, -which -was obtained by the action of hydriodic acid on platinosic hexaiodotetrammine,
Pt8(NH8J4I6, or Pt8I6.4NH3, obtained by boiling platinic tetraiododiammine
with hydriodic acid. C. T. Morgan and F. H. I3urstall prepared complexes with dipyridyl.
The platinous Chloroiodides are represented by some complex salts. O. Carlgren and
P. T. Cleve prepared platinous dicblorodiamminochloroiodide, [Pt(NH3)2Cl2|TCl. H. Londahl
obtained platinous iodoethylenesulphineamminolodochloroplatinite, [Pt(NH3){(C8H4)2S2}I]I.
PtCl8 ; C. .Rudelius platinous cis-chloroiodobispropylsulphine; L^M (C3H 7)2S}C1T] ; and
J. Petren, platinous chloroiodobisethylselenine, [Pt{(C8H6)S}2Cllj ; and platinous chloroiodoethylsulphine-ethylselenine,
LFt{(C8He)8S}{(C8H5)2Se}ClI] ; J. Petren also reported platinous
bromoiodobisethylselenine, [ Pt{(C 8H 6) 2S > aBrIJ.
REFERENCES.
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(2), 88. 357, 1888 ; C. W. Blomstrand and C. Rudelius, ib., (2), 38. 525, 1888 ; K. Bunsen,
Liebig's Ann., 87. 1, 1841 ; 42. 14, 1842 ; Taylor's Scient. Mem., 3. 281, 1843 ; O. Carlgren and
P. T. Cleve, Zeit. anorg. Chem., 1. 65, 1892 ; G. Clementi, Nuovo Cimento, (2), 2. 192, 1855 ;
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G. T. Morgan and F. H. Burstall, Journ. Chem. Soc., 965, 1934 ; F. Mylius and F. Forster,