g: Art. 2.— Y. Shibata and T. Maruki : 



precipitates thus formed were immediately filtered off. In order 

 to avoid autoracemisation, which might occur in the dissolved 

 active complex, absolute alcohol was added to the filtrate in small 

 portions, until a slight but permanent turbidity was established. 

 The walls of the vessel were then strongly rubbed with platinum 

 spatula to accelarate crystallisation, when fine brownish red needles 

 were readily formed. These crystals were collected and well sucked 

 on a filter, washed first with a small quantity of water and then 

 with absolute alcohol, until they had no more a bitter, but slightly 

 sweet taste. 



An estimation of cobalt, potassium and Avater in the product 

 thus obtained from fraction la gave the following numbers, proving 

 that the desired potassium salt of the complex was obtained: 



calc. for 

 obs. [Co(NH3),(NO,)2CA]K-liH20 . 



Co = 17-88% Co = 17-38% 



K=10-96" K=11.53" 



H20= 645 " H,,0= 7-96 " 



Its specific rotation was found to be : 



[a]^»=-115' (0.1%, 10 cm) 



The salt prepared from fraction VIII in the same manner gave the 

 following analytical and optical data: 



obs. tlieor. 



Co=17-95% Co=17.38% 



K = 11.59» K=11.53" 



11,0= 7 17 " H20= 7.9G » 



Sp. rot. : [«]!,*= + 1 15° (0.1 %, 10 cm) 

 It is evident, therefore, that as already pointed out, the least 

 soluble fraction consisted of /-brucine-/-diammine-dinitro-oxalo- 

 cobalt complex, while the most easily soluble fraction consisted of 

 ./-brucine-c?-diammine-dinitro-oxalo-cobalt complex. 



3) Wesotomlsation of Diammine-dinilro-oxalo-coball 

 Complex as Sirychinine Salt. 



Mesotomisation of diammine-dinitro-oxalo-cobalt complex 

 with strychinine sulphate (C'sJissNoC )2)S04H2, GHgO was next tried. 



