42 P. T. C LE VE, 



jOH 

 NH 



D. Hydroxylo-platinammine R=Pt NH | 



loH 



8. Nitrate R.2NO s +2H 2 (5) 



9. Sulphate R.S0 4 +HO (13) 



10. Oxalate R . C 2 Ö 4 +H 2 (14) 



11. Hydrate R . 2HO (15) 



|O.N0 2 



I V"LT 



E. Nitrato-platinammine R=Pt XH * 



lo . N0 2 



12. Nitrate R.2N0 3 (4) ' 



13. Nitrite R2NO, (6) 



rO.NO 



F. Chloro-nitrato-platinammine R=Pt 



14. Nitrite R. 2NO, (7 



NH, 



NH 

 Cl 



|NH 3 



O 

 NH, 



G. Sulphato-platinammine R— Pt( NH 3 S0 2 



' o I 

 15. Sulphate R.S0 4 + 3FLO (12) 



F. COMPOUNDS OF PLATO-SEMIDIAMMINE. 

 (Platinaoxidulamoniak Lang and Cleve previously). 



R=pt „|NH 3 -NH3 



1. Chloride RCL. This compound was first described by Peyrone l ) and is ca- 

 sily obtained by adding aminonia to a cold solution of the protochloride of platinum 

 in hydrochloric acid. The brown colonr of the liquid is soon changed into }'ellow, 

 and the solution filled wiht a voluininous greenish-yellow precipitate. If this is sepa- 

 rated from the liquid and boiled with water, the chloride of plato-semidiammine is dis- 

 solved and a green crystalline powder of the green chloride of Magnus is left iindis- 

 solved. The boiling filtered solution immediately deposits by cooling the chloride of 

 platosemidiammine in the form of microscopical needles of a fine yellow colour. 



The ehloride is also obtained by adding hydrochloric acid or a soluble chloride 

 to the solution of the nitrate or the sulphate of the base. 



The chloride is dissolved with difnculty in cold water, one part of the chlo- 

 ride requiring 387 parts water of 0° for solution. In boiling water it dissolves 

 more easily. One part of the chloride requires according to my experience 26 parts 

 boiling water for solution, or 33 parts according to Mr Peyrone. 



The chloride does not contain any water. 



') Peyrone Ann. d. Ch. u. Pharm. bb. 1845 p. 20b and 61. 1847. p. 180. 



