CFAE Dissociative Substitution is the difference of crystal field stabilization energy of intermediate and reactant . And is denoted by CFAEDS. CFAE Dissociative Substitution is usually measured using the Diopter for Wave Number. Note that the value of CFAE Dissociative Substitution is always negative. Typically, the value of CFAE Dissociative Substitution lies in the range from 0 to 100000.