29920
The electronic reorganization of the Fe ( IV ) oxo species during the reaction is thoroughly analyzed and it is shown that the Fe ( IV ) oxo reactant develops oxyl radical character , which interacts effectively with the sigma CH orbital of the alkane .
 Chemical: Fe ( IV ) oxo; Chemical: Fe ( IV ) oxo; Chemical: oxyl; Chemical: CH; Chemical: alkane
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Fe ( IV ) oxo; Chemical: Fe ( IV ) oxo; Chemical: oxyl; Chemical: CH; Chemical: alkane