$84: 

 / 



€H 2 

 \ 



Mr. Gervaise Le Bas on the 



CH.>- 



NH 2 



CH 2 - NHIH 



CH, 

 / \ 

 CH 2 HH+ NH- 



W 



Imide 



Formation 



and so on in many other cases. 



(6) It has been concluded (Ber. xv. p. 630, 1882) from the 

 peculiar differences in the deportment of: the a, ft, and y 

 oxy acids, when they split off water to form lactones, that in 

 these oxy acids there is a special spatial arrangement or 

 configuration of the C chains. The assumption that the 

 atoms of a molecule not linked to each other in a formula 

 can exert an affinity upon one another, has led to the idea 

 that in a union of more than two C atoms these atoms 

 arrange themselves, not in a straight line, but upon a 

 curve. 



(c) In the ethylene compounds it is impossible for ring- 

 compounds to form unless polymerization occurs, in some 

 cases at least : — 



CH, - 

 1 



;ci 



i 

 i 



Na 



CH, 

 II + 



2HC1 



CH,- 



!C1 





CH 2 





The product is the unsaturated compound Ethylene. The 

 presumption is strongly in favour of the contiguous position 

 of the two CI atoms in the original compound. 



Carbons Singly Linked. 

 The possibility of isomerism at first sight seems clear : — 



If we suppose that rotation on the single axis joining the 

 two carbons can take place easily., we see that Form I. 

 would be unstable and tend to pass into Form II. by this 



