ON AMMONIACAL PLATINUM BASES. 7 



num. In the first of these I showed, that the brown compound in glittering scales, of 

 the eqv. formula Pt . N H 3 . Cl, obtained by Peyrone, is a double salt of the proto- 

 chloride of platinum, and the chloride of a new base of platinum: 



T . ™ ^ " J NH,~XH 3 Ci rr . , . ., „ I NHa^NHjCI . ,.-,., 



Pt Cl 2 + 2 Pti NH ci* l ne chloride Pt\ N H 3 C1 may be combined with two 



atoms of chlorine, when it produces the chloride Pt NH 3 3C . In the second and 



I ci ' 

 third paper I reported on the nitrites and sulphites of the isomeric bases of platos- 

 ammine and platosemidiammine. 



Before I proceed to the detailetl reports of the researches, on which the state- 

 ments in my latest papers are founded, I will lirst review shortly all the known cora- 

 pounds, which are derived from the three bases af platodiammine, platindiammine and 

 diplatindiammine, of which I have treated previously. 



A. COMPOUNDS OF PLATODIAMMINE R ="?* { JJ h'^N H 



1. Hydrate R (O H) 2 J ). 



2. Chloride R Cl 2 + H 2 O 2 ). 



3. Chloride with Chloride of Lead R Cl 2 ~Cl 2 Pb 3 ). 



4. Chloride with Chloride of Mercury R C1 2 ~C1 2 Hg 4 ). 

 ö. Chloride with Chloride of Zinc R Cl 2 Cl 2 Zn 5 ). 



6. Chloride with Cupric chloride R C1 2 ~C1 2 Cn 6 ). 



7. Chloroplatinite R Cl 2 ~ Cl 2 Pt 7 ). 



8. Bromide 2 R Br 2 + 3 H 2 O 8 ). 

 V). Jodide RJ 2 9 ). 



10. Platocyanide R Cy 4 Pt 10 ). 



11. Sulphocy artide R (Cy S) 2 + H 2 O X1 ). 



) Reiset Ann. de Ch. et de Pliys. (3) T. 11 1844 p. 422. -) Reisbt 1. c. p. 418. Peyrone Ann. Ch. u. 

 Pharra. 51, p. 1, 1844. 3 ) Bucktos Ann. Ch. u. Pharm. 84, 1852, p. 270. 4 ) Buckton 1. c. p. 271. 

 5 ) Buckton 1. c. p. 272. •) Buckton 1. c. p. 272. 7 ) Magnus Pogg. Ann. 14, 1828, p, 239. Cleve 

 Ammon. -Plåt. -föreningar 1866, p. 26. 8 ) Cleve 1. c. p. 29. 9 ) Reiset 1. c. p. 425. 10 ) Reiset ]. c. p. 

 426. Buckton Ann. Ch. u. Pharra. 78, 1851, p. 328. Cleve 1. c. p. 53. n ) This compound is obtai- 

 ned by mixing together saturated solutions of the chloride of the base and of sulphocyanate of ammonia, 

 By cooling the salt crystallises in yellowish white prisms. It is very soluble in water and the solution, 



when boiled, gives up ammonia and deposits brown raicroscopical needles Pt < 9 ^ T „ 3 " _. 2 > Pt. 



i ~SJ TT r%„ c 



Sulphocyanate of platosanimine, Pt < 3 ' , remains in the solution, and by cooling, it crystaUises 



in long yellow needles. The salt treated with rauriatic and nitric acid gives a greenish white, scarcely 

 soluble powder, which seems to be the chloride of platindiammine. The sulphocyanide is decomposed a 



little above 100' C. in ammonia, in the red plato-sulphocyanate of platodiammine, and in sulphocyanate of 

 platosammine. The sulphocyanate contains. 



Found. Calculated. 



Pt 50,6 5. 49,48. 



S 16,35. 16,0d. 



