Common features for higher olefins

In going to higher olefins, reactions in each system become more and more complicated, in addition to the increase in the number of isomeric systems. In this section, we consider common characteristic features of parent ion reactions in higher olefins. 

Parent ion reactions in butenes have been rather well studied [134, 284, 290, 299—301] and a few studies have been carried out on pentenes [132, 290] and hexenes [290], Throughout these studies, it has been found that 1-olefins are much more reactive systems than 2- and 3-olefins. Namely, the reactions l-P + 1-M have much greater overall cross-sections than the reactions 2-P + 2-M and 3-P + 3-M, where P and M represent 

2-C4H8 O/ Ioq and The above relative cross-sections were 

Relative total reaction cross-sections for four combinations of reactants in butenes [290] 

Total reaction cross-sections for parent ions of five pentene isomers [132] 

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