Attaching an ethyl group to various molecules

The reaction given in (4.4.34) can be generalized as follows instead of bringing a methane molecule from infinity and attaching it to various molecules, we bring an ethane molecule. The 

Note here that the study of reactions of the type (4.4.37) provides new and independent information on the H(f 0 interaction which is not contained in the study of reactions of the type (3.4.34). Table 4.7 shows that the values of 8A for reactions in this class are systematically smaller than the corresponding values for reactions of the type (4.4.34). These 

We conclude this section by pointing out that quite a variety of information on HI can be obtained by processing the same experimental data in various ways. For example, having the standard free energies of solution of methane, ethane, and butane, we can obtain the HI for three different reactions, which we write schematically as 

For larger and more complex molecules, many new possibilities exist. In this section, we have presented a few examples, mainly for normal hydrocarbons. Further examples for branched hydrocarbons are given by Ben-Naim (1972a). 

Values of for Interaction between Ethane and Various Hydrocarbons  

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