1882.] 



Action of Ethylene Chlorhydrin, fyc. 



449 



same boiling-point. One obtained by the distillation of aldol-ammonia 

 was undoubtedly identical with aldehydine of Baeyer and Ador 

 (boiling-point 179 — 182° C), the other was isolated from the pyridine 

 bases formed by the distillation of cinchonine with hydrate of potas- 

 sium ; this collidine is the ^-collidine (boiling-point 179 — 183°).* 

 The experiments have proved that these two collidines are isomeric. 



Action of Ethylene Chlorhydrin upon Aldehydine. 



A mixture of these two compounds, in proportion of their molecular 

 weights, to which a quantity of water weighing as much as the alde- 

 hydine employed was added, was heated during several days in closed 

 tubes to 100° C. The oily layer which floated on the mixture at the 

 end of the operation, continually decreased and finally disappeared 

 after cooling. The aqueous liquid, which was slightly brown, was ex- 

 tracted with ether, and finally evaporated in the vacuum. The ether 

 had dissolved a small quantity of unattacked aldehydine and chlorhy- 

 drin. The chlorohydrate, concentrated by evaporation, was mixed 

 with an excess of platinum chloride, and alcohol was added to the 

 mixture. An abundant crystalline precipitate was obtained, and was 

 purified by several crystallisations in hot water. In this manner 

 magnificent voluminous orange-red crystals of chloroplatinate of 

 oxethyle-aldehydine were obtained. Their analyses furnished the 

 following numbers : — 







Experiment. 











A 





Theory. 





I. 



II. 



III. 







32-65 . 



. . 32-80 . . . 



31-90 .. 



.. 32-33 



Hydrogen . . . 



4-46 . 



.. 4-45 ... 



4-53 .. 



. . 4-31 





4-10 . 



. . . 4-22 . . . 



,, . . 



.. 377 





28-24 . 



,, ... 





.. 28-70 





26-30 . 



,, ... 



25-84 . . 



.. 26-27 



The Analysis III, which is the most accurate, was executed with a 

 salt which had been dried in the vacuum ; when this salt is heated to 

 100° C. it loses hydrochloric acid, which tends to augment the pro- 

 portion of carbon and of platinum. The Specimen III, after having 

 been heated to 100° during some time, contains 28'2 per cent, of 

 platinum. This alteration, which is more marked in the case of the 

 chloroplatinate of oxethyl-collidine, will be examined later on. The 

 results of these analyses lead to the formula (C 10 H 16 ISrOCl)2PtCl 4 , 

 which is that of a chloroplatinate of oxethyl-aldehydine — 



[c 8 H u N<°°A] PtCl 4 . 



* The /3-collidine which Mr. Oechsner de Coninck found amongst the cinchonine 

 bases boils at 198°. 



