ON AMMONIACAL PLATINUM BASES. 89 



III. Compounds of iridid-diammine. 



1. Chloride RC1 4 



rci 



^2NO, 



2. Chloro-nitrate R 



l Cl 



rci 



3. Chloro-sulphate I! so, 



I Cl 



IV. Compounds of diiridid-di-triammine. 



1. Chloride RC1 G (not analysed) 



■2. Nitrate R . GN0 3 , 



3. Sulphate R3S0 4 



4. Carbonate R3C0 3 +3HX> 



E. Ammoniacal compounds of Ruthenium. 



According t<> Claus l ) the two-atomic ruthenium with ammonia gives two bases, 

 of which the radicles have the composition Ru . 2NH 3 and Ru . 4NH 3 . Of the former 

 radicle only the hydrate Ru . 2XH 3 . 2H0 + 4fL0 is known, and it originates from the 



{v TT 

 NH 3 



Of Ruihendiammine R=Ru|o XH ' the following compounds are known: 



1. Chloride RCL+3H 3 



2. Chlor oplatinate R CL/"C1 2 Pt Cl.. 



3. Hydrate not known in dry state 



4. Nitrate R . 2X< C + 2H.0 



5. Sulphate K . S0 4 + 4H,0 

 G. Carbonate R.C0 3 + ofLO. 



F. Ammoniacal compounds of Rhodium. 

 Ammoniacal derivates of Rhodium are known, all being derived from the radicle 



,'iXIL 



Rh 2 j;3 NH 3 ^=R or di-rhodium-di-triammine. 

 [2NH3 



They have been described by Claus 2 ) and their formulas are: 



1. Chloride RC1 G 



2. Nitrate R . 6N0 3 



3. Sulphate R. 3S0 4 + 3H 2 



4. Carbonate \\ . 3CO.. + 3H.O 



') Claus Bull. de 1'académ. Imp. do scienees de S:t Petersbourg T IV. p. 452. 1862. 

 2 ) Beitr. zur Chemie. der Platin-metalle Dornat 1854 p. 85. 



12 



K. Vet. Ak.i.l. IIliii.11. B. 10. X:o 



