ON AMMONIACAL PLATINUM B ÅSES. 85 



and Pt 



Cl 



OH 

 OH 

 OH 

 OH 

 OH 

 OH 

 (1 



which latter is an hexatomic acid. 



|p TI \ 



Bunsen 1 ) has described a eurious of derivate platinuin and kokadyle: Pt"\ c » H 2 Ås'" Cl, 



in which the platinum in all probability is directly united with tlie organic hydrocar- 

 buret. CH 2 '. and not with the arsenic. as in the triethyl-arsine-compounds of Cahours 

 and Gal. This remarkable coniponnd forms a natural transition to the ethylene-pla- 

 tinum-compounds, diseovered by Zeise 2 ), and studied by Gbiess & Martius 3 ) and by 

 Mr Birnbaum 4 ). The platinum derivates of acetone also diseovered by Zeise 5 ) belong to 

 the same class. Still more interesting are the eompounds of earbonyle-platinnm and 

 ehlorine 6 ) recently diseovered by Mr Schutzenbergee. In all these eompounds the 

 ethylene ') or carbonyle, as being diatomic radieles have the same chemical fnnction as 

 ammonia in the ammoniaeal eonpounds of platinum. 



The formulas for these eompounds are as follows: 



^ >T !n~riMi + H_ ( ^ Zeise PtJ(.[-^. 1K +H 2 O Zeise : Birnbaum. 



Pt| N 2 H * C1 Zeize Pt{ cl 2 ' 4 Griéss & Martii - 



pJ C J JI 4 C l , Ct Al 



i t, ci-n.c. n, \. ''• tV - L 

 pJC 2 H 2 Cl 



j $C1 2 .N 2 (.C 2 HVH 6 ) G. ^ M . 

 Pt{ NH *}C" 2 H 4 [ C] G. & .M. 



pjc.H4.c1 

 ^""'Wn, G.&M. PHS?iS + H.O Bxknba™ 



1 X \( ', H 4 C1 



l ) Bunsen Pogg. Ann. 40 p. 219. Ann. der Ch. und Pharm. -'!T. p. 6; 40. p. 19. see also Gerhardt Traité de 



Chimie Org. T. 1. p. 641. 

 -) Zeise Pogg. Ann. 21 p. 497. 1831. 



:i ) Griess di Martius Ann. der Ch. n. Pharm 120. p. 324. 1861. 

 4 ) Birnbaum Zeitschr. fur Ch. 3. 1867 p. 388 & 518. 

 "') Zeise Ann. ('hem. n. Pharm. 33. p. 29. 



fi ) Schutzenberger Bullet. de la Soc. Chem. de Paris 1870 Juillet p. 17. 

 ') An analogous compound acetate of sodium-ethyléne Na . C, II 4 . O ". (C, H ;J O) i- described by Wanklyn. 



(Deutsche Chem. Ges II. 1869 p. 64), also the Ferro-ethylene cbloride of Kachleb Fe"!,, 1T _,. + 2H, O 



1 • I l, 2 li 4 Ll 



(Deutsche ('hem. Ges. II. 1869 p. 15 and 510) The eompounds of hydrocarbons prepared by Berthelot. 

 ex. gr. aeetylene with salts of copper, silver, chrome, etc. evidently belong ro the same class. 



In general the organo-metallic eompounds containing diatomic radieles are probably analogous to the 

 ammonia-metallic eompounds, but they are for the present verv little known. 



