S6 



P. T. CL K VE, 



D , ICO. Cl 



rt C] ÖCHUTZENBERGER. 



D JC1~C1. CO .!„.,. c 



Pt „ A ,„-,„ rt ÖCHUTZENBERGER. 



Pt| 



( „ H 8 C1 



Cl 



+ H 2 Ö Zeise deriv. of acetone. 



n ,fCO~COCl i^ ICO. Cl o 



rtj cl or 1 t ! co cl ÖCHUTZENBERGER. 



| Cl" Cl. CO 

 i CO. C1~C1 



The two first chlorides of carbonyle-platinum may, according to Schutzenbergee, 

 unite with ammonia, thus probably forming the compounds Ptwg C1 and Pt Ö NI] C1 

 analogous to the chlorides of platomonodiamraine and of platodiammine. 



The compound Pts C] gives H Cl and the compounds Pt| c H with ethylene. 



In the same manner as platinum can unite with diatomic radicles to new radicles 

 it may also unite to eomposed radicles with triatomic compounds such as cyanogene. 

 As Mess:rs Boedecker, Braun and Blomstrand have pointed out the cyanogen-com- 

 pounds of platinum are thus analogous to the ammonia platinum compounds." 



It is easily seen by comparing the formulas of: 



p f /Cy 2 K pJ(NIV 2 Cl 



ri lCy 2 K x l M(NH 3 ) 2 C1 



,C1 /Cl 



(NH 3 ) 2 Cl 

 |(NH 3 ) 2 ( 1 

 Cl 



pJC.v.K 

 1 T, |('v, K 



Pt! 



Pt 



Cv 



p |Cy 2 K 

 1 T Cy, K 



Cy, K 

 Cy 



I 

 (NH 3 ), I 

 p t KNH 3 ) 2 I 

 -|(NH 3 ) 2 I 

 (NH 3 ) 2 . 1 

 I 



Thus the ammonia-platinum compounds and conseqnently the other ammonia- 

 metal-compounds are not an isolated dass of chemical compounds, but may be placed 

 at the head of a large series of many other groups. 



REVIEW OF THE OTHER AMMONIA-METAL-COMPOUNDS. 



A. Ammoniacal compounds of Thallium. 



According to Willm the triatomic Thallium can unite with three mol. NH 3 , thus 

 forming the chloride and bromide TI 3NH 3 . Br 3 and TI . 3NH 3 . Cl 3 r ). 



B. Ammoniacal compounds of Gold. 



According to Mr Blomstrand 2 ) protochloride of gold unitcs with ammonia and 

 yields the chloride AuNH 3 . Cl. The sulphocyanate of gold gives AuNH 3 . CyS 3 ) with 

 ammonia. 



To these two compounds the following may be added: 



Au . P(C 2 H 5 ) 8 . Cl (Hofman 4 ) Cahours & Gal 5 ). 



*) Willm ltecherches sur le Thallium Paris 1865 p. p. 28 & 42. 



2 ) Blomstrand Öfvers. af K. Vet. -Ak. Förh. 2G Årg. 1869 p. 222. 



3 ) Cleve, Öfvers. af K. Yct.-Ak. Förh. Årg. 20. p. 233. 18(34. 



4 ) Hofman Ann. der Ch. u. Pharra. CIII p. 358. 1857. 



5 ) Cahours & Gal Journ p. pr. Ch. N. F. 2. 1870 p. 4G0. 



