Coal related structures susceptible

The significance of p-bond scission in coal chemistry is limited by the concentration of suitable molecular structures. Rapid p-bond scission generally requires structures containing three or more consecutive, saturated, polyvalent atoms such as carbon, oxygen, nitrogen and sulfur. Examples of coal-related structures susceptible to rapid dissociation by p-bond scission are given in Figure 1. For each structure, once the C-X bond is broken by any means, the radical formed will rapidly dissociate. 

Figure 1. Coal-related structures susceptible to rapid fi-bond scission (radicals formed by breaking C-X bond will decompose by p-bond scission in 10 2 s at...

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