ON AMMONIACAL TLATINUM BASES. 87 



Au As(C 2 H 5 ) 3 Cl (Hopman Cah. & Gal). 

 Au Sb(C a H 5 ) 3 Cl (Hofman). 



C. Ammoniacal-Compounds of Pailadium x ). 



Two-atomic, bnt not tétra-atomic, pailadium unites with ammonia, forming basic 

 radicles Pdj XH 3 and Pdj 2NH 3 . The existence of the radicle Pd| is not certain, but 



very probable. Several compounds of pailadium isomcric with the salts of Pdj NH 3 

 exisf, but it is not known, Avhether they are double-compounds with salts of pailadium, 



I2NH . 



or derivates of a radicle Pd| The two isomerie nitrates obtained by I. Lang make 



the latter view appear the most probable. 



I consider the following compounds as belonging to the radicle Pd| NH 3 =R: 



1. CIdoride (yellow) RC1 2 (Fehling, Fischer, H. Muller) 



2. Bromide (yellow) RBr 2 (H. Muller) 



3. lodide (yellow) RI 2 (H. Muller, Fehling), 



4. Sulphate R . 2 . S0 2 (H. Muller) 



5. Sulphite R . 2 . SO (H. Muller) 



6. Nitrite R. 2 . 2NO (I. Lang) 



7. Palladio-nitrite R . 2 . 4NO . 2 Pd (Lang) 



Isomerie compounds of unknown atomical composition: 



1. CIdoride Pd . 2NH 3 . Cl 2 (red) (Vauquelin, Feiiling Fischer.) 



2. Bromide Pd . 2NH 3 . Br 2 (red) (H. Muller) 



3. lodide Pd . 2NH 3 . Br 2 (red) (H. Muller) 



4. Cyanide Pd . 2NH 3 . Cy 2 (Croft) 



5. Sulphocyanate Pd . 2NH 3 . (Cy S)_. (Croft) 



6. Nitrite Pd . 2NH 3 . 2 2NO (Lang obtained it by adding ammonia to a so- 

 lution of the palladio-nitrite of potassium). 



The real salts of palladammine are formed by the loss of 2 mol. ammonia ont 

 of the compounds of palladdiammine. 



Palladdiammine R=Pd| 2NH 3 



1. CIdoride RCL+ILO (H. Muller) 



2. lodide RL (H. Muller) 



3. Sulphite R . 2 . SO (IL Muller) 



) Litterature : 



1813 Vauöuelin Ann. do Ch. et d. Pliys. 88 p. 1G7. 



1840 Feiiling Ann. der Ch. u. Phavm."39. 116. 



1842 Kaxe Tliil. Transact. R. S. Lond. II p. 275. 



1847 Fischer Pog-g-. Ann. 71 p. 431. 



1853 H. Mlllf.k Ann. der Ch. n. Pharm. 86. p. 341. 



1864 I. Lang K. Vet.-Ak. Handlingar, Bd 5. N:o 5. p. 12. 



1867 Croft Chem. News p. 53. 



