240 ANHYDRIDES OF ORGANIC ACIDS 



compound corresponding to sulphur succinimide, but this 

 substance has not been obtained in the pure state owing to 

 its extreme sensitiveness to moisture, with which it at once 

 gives sulphur dioxide and succinimide : 



[C 2 H 4 (CO) 2 N] 2 SO+H 2 = 2C 6 H 4 (CO) 2 NH+S0 2 . 



It is seen from the foregoing that while neither formula 

 for sulphur chloride is in conflict with the behaviour of this 

 compound towards water, metallic salts and amines, the 

 unsymmetrical one S : SC1 2 affords a better explanation of its 

 reactions with hydrocarbons, phenols, and metallic derivatives 

 of imines, and is therefore to be preferred, quite independently 

 of any presumption in its favour from the standpoint of 

 analogy. 



WILLIAM SMITH DENHAM 



