Chemistry and Physics. 415 
with platinous chlorid, forming a solid reddish-yellow vestiges 
volatile with difficulty, fusing at about 200°, and solu 
phorous chlorid, from which it crystallizes in coolin The com- 
position of this ‘body i is represented by the formula PCI, . PtCl,. 
The same substance is formed by heating one atom of platinum 
with one molecule of phosphoric chlorid, gti Aer tar PtCl,, 
and also by the action of PCl, upon CO. PtCl 2, CO being given 
off The compound PCl,. ,-Ptel, dissolves in water with a yellow 
an plex acid, P(HO), PtCl,, and differs 
essentially from the body described by Baudrimont, which accor- 
2 fine chemist, has the formula PCI, .PtCl,, (Pt=98 
the ae and names of a series of very remarkable deeaaes 
which he has obtained from the primitive, PCl,.PtCl, ; these are 
as follows 
ie PtCl, chlorid of tr Crimea ee 28 cha 
P(HO),. PIC, phospho eae dee inous acid, 
P(A,O), . PtCl, silver salt of the same. 
2H,O),.PtCl, chlorid of trioxethyl phospho en 
P( Cc; ti, O}8 PLO. i, O ope et oe of platin 
PCE o -0, 
P(C, H. Oo). PS, ii, HCL fe ae of trioxethyl-phospho- 
latin-dia 
Le Ob PtCl, chlorid of hexachloro-diphosphoplatinum. 
P3(HO),. PiCcl, diphospho-chloroplatinous a acid, 
P,(AgO),. PtCl, silver salt. 
© (C,8 Oye Ptcl, chlorid of hexoxethyl-diphospho platinum. 
P, (C 3H.O O),. Pt “a. : 
P, HC; H, 20) Cl ,Ptcl, chlorid of trichloro-trioxethyl- -diphospho 
Le C.H,0), ‘ (HO) 3 PtCl, diphospho-trioxethyl-chloro-platinous 
gers points out the analogy between these compounds 
and the ammonia-platinum bases. In a third note he gives a 
method of isolating the radicals contained in the ‘aheve described 
"On new ee es of t d Gat 
have studied the wees of the action fs sence potter upon tri- 
ethylphosphine, and have obtained a compound having the form- 
ula,* P(C,H,),PtCl, which they regard as the sqeenlet of th 
green salt ‘of agnus in the ammonia series. This body ¢ erystal- 
‘anspare of 
an amber yellow color. An alcoholic solution of this salt heated 
to 100° for several hours in sealed tubes, yields crystals of an iso- 
*O=6 O=8 Pt—98'7. 
