Dr. Frankland on Organo-metallic Bodies. 379 



Ethyle-series. Ethylene-senes. 



Bisulphide of C4H6S3 Bisulphide of ethylene C4H4S4 

 ethyle. 



L S O 



Ethylsulphurous C4H5 \ «, p, Ethylene- sulphurous n xt i ^ ^ 

 \J. H )SA acid. ^H*}S,0, 



H "1 g Q 



Ethylene-sulphuro-sul- r; H J * ^ 



phurous acid. "* "*! g n 



Sulphovinic acid \j ^ [ ^2^8 



Compounds of the Acid-forming Radicals. 

 Propionyle-series. Succinyle-series. 



Chloride of pro- ^ (o tj \c\ n Chloride of sue- n CC H ^O CI 

 pionyle. i^,{Ci^;,)^,M ^inyle. '-4 (.^4^4; ^4' ^i^ 



Propionic acid. . C 



Anhydrous pro- C, (C4H5) O^ "1 ^ Anhydrous sue- nrQ^)o q, 

 pionicacid. C,{C^B.,)0,]^^ cmic acid. 4V 4 4^ 4. . 



(C^H^)^} O, Sutcinic acid. . C4(C4H4)04| 



H 



N> H 



h}o. 



fH 



Propionylamide N-< H Succinamide. ^ C4(C4H4)04 



LC,(C4H,)0, nI h 



" Researches on Organo-metallic Bodies." Third Memoir. — On 

 a New Series of Organic Acids containing Nitrogen. By Edward 

 Frankland, Ph.D., F.R.S. 



The author, in pursuing the line of research indicated in his 

 former memoirs, has investigated the action of zincethyle and zinc- 

 methyle upon binoxide of nitrogen, and has succeeded in producing a 

 new series of organic acids, by the substitution of oxygen in binoxide 

 of nitrogen by methyle, ethyle, &c. Binoxide of nitrogen is slowly 

 absorbed by zincethyle, and the sole product of the reaction is a body 

 which is deposited in magnificent rhomboidal colourless crystals. 

 This body has the composition expressed by the formula 



N;C4H5 04Zn + C4H5Zn, 

 and consists of the zinc salt of a new acid, for which the author 

 proposes the name dinitroethylic acid, united with zincethyle. The 

 dinitroethylate of zinc and zincethyle is produced from binoxide of 

 nitrogen and zincethyle according to the following equation, 



^^2N0,^'^} =N,C,H,04Zn-fC4H,Zn. 



