14 Rachel Lloyd, 



of platinum chloride in excess. The double salt separated at 

 once in the form of golden needles. These were recrystal- 

 lized from absolute alcohol. The crystals warmed with water, 

 were decomposed with separation of the base. 



An analysis of the salt dried at ioo°-iio° gave the follow- 

 ing result : — 



I. 0.1736 gr. substance gave 0.0476 gr. platinum. 

 II. 0.6944 gr. " " o. 19040 gr. " 



Calculated for Found. 



(CioHi5N.HCl)2PtCl4. I. II. 



27.48 per cent Pt. . . 27.41 . . 27.42 per cent Pt. 

 Acetylthymylaminc : — 



N^CoH3 = Ci..Hi,NO. 



The compound was formed by heating the base with an 

 excess of acetic anhydride for half an hour at 100°. The 

 solution, which at first was almost colorless, changed to a 

 light-brown ; upon cooling a grayish-white crystalline mass 

 separated, which was washed and neutralized with sodium 

 carbonate and recrystallized from absolute alcohol, in satiny 

 white needles which melted at 112.5°, closely agreeing with 

 the melting-point obtained by Widman.^ 



Derivatives of Dithymylamine. 



The Platinum Double Salt— (Coo H^eNH . HCl),, Pt CI4 — 

 was formed when to an ether solution of the base, acidified 

 with hydrochloric acid, platinum chloride was added in excess. 

 After standing for some days, a thick yellowish-brown oil 

 separated, which was thoroughly washed in cold alcohol (in 

 which it was not soluble) dried over paraffine and sulphuric 

 acid, and finally at 100°. 



^ Berichte der Deutschen chem. Gesellschaft XV., i66. 



no 



