OX AMMONIACAL PLATINUM BASES. 71 



vi , 



11. PtiioNiL Diplatosemidianimioe (only anhydro-coinpounds are known p. 53) 



VI 



12. Pti 3 Diplatinseraidiaminine (only the anhydro-chloride is known p. 56) 



BASES OF PLATINUM CONTAINING ORGANIC RADICLES. 



The first account of bases of platinnm, in which the part of amraonia is over- 

 taken by an organic base, dates from the year 1848, when ILewsky 1 ) published a pa- 

 per, in which he states, that the protochloride of platinura gives two corapounds with 

 aniline: 



I. Pt.(C 6 H 7 NK,Cl 2 

 II. Pt(C 6 H 7 N) 4 CL 



Låter Mr. Wurtz 2 ) showed that the newly discovered bases of methyl- and ethyl- 

 ainine can unite with platinnm forming basic radicles. Anderson 3 ) described some 

 compounds of platinnm, which contain the bases of pyridine and picoline, whose ato- 

 mical composition was explained by Blomstrand 4 ). Compounds containing chinoline 

 and jjlperidine were described by G. Williams ')• 



Mr Chydenius b ) investigated the action of aniline upon protochloride of platinnm 

 and platinous sulphite, and Gordon 7 ) published a paper on the chlorides of bases of 

 platinum, which contain ethylamine, aniline, toluidine etc. 



A report on some compounds of platinum, that contain both ammonia and ani- 

 line or ethylamine, was published by me 8 ), and I shall in the following give a com- 

 plete account of the researches, ofi which that treatise is founded. 



I. Bases of Platinum containing Aniline. 



According to Mr. R^ewsky aniline with the protochloride of platinum gives two 

 chlorides, one having two molec. aniline and the other four. The latter compound is 

 very uncertain, as neither Chydenius nor Gordon were able to obtain it. Chydenius 

 states that the chloride with two mol. aniline. when raixed with nitrate of silver, at 

 first produccs a white precipitatc, but soon a decomposition takes place and coloured 

 compounds are formed. Chydenius did not obtain any salts of the base. I have also 

 tried to prepare salts of the base by decomposition with salts of silver, but I only 

 obtained intensely coloured solutions. When I treated the chloride with sulphite of 

 ammonium, a colourless liquid was produced, which by evaporation yielded fine colour- 

 less needles. The analysis of this compound. dried at 100° gave: 



') Kä:wsky. Compt. Bend. (26 p. 424). 



2 ) Wurtz, Ann. de. Ch. et de Phys. (3) 30. p. 443. 1850. 



3 ) Anderson, Ann. der Ch. u. Pharra. 96 p. 199. 1855. 



4 ) Blomstrand, Cbemie der Jetstzeit p. 409. 1869. 

 "') G. Williams Jahresbericht, 1858. p. 357. 



") Chydenius, Om anilins inverkan på platinaklorur och svafvelsyrlig Platinaoxid ul. Helsingfors 1859. 



7 ) Gordon, Dentch. Chern. Gesells. III. p. 174. 1870. 



8 ) Cleve, Öfversigt af K. Vet.-Ak. Pörh. 1870. p. 883. 



