Stereochemistry equivalence class

As discussed above, relational terms such as enantiomeric and RS-diastereomeric are effective to demonstrate qualitative aspects of stereochemistry. In contrast, quantitative aspects of stereochemistry require more definite terms based on attributes of equivalence classes. This section is devoted to a brief survey of such quantitative aspects in comparison with such qualitative aspects. 

Fig. 10.19 A paradigm shift for equivalence classes, (a) Equivaltrace classes under enantiomtaic relationship in the conventions of stereochemistry and (b) equivalence classes under RS-stereoisomeric relationships in the present approach (Fujita 2009b)...

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