Dissociative Interchange Pathway
Interchange pathways apply to substitution reactions where intermediates are not observed, which is more common than pure dissociative pathways. If the reaction rate is insensitive to the nature of the attacking nucleophile, the process is called dissociative interchange, abbreviated Id. An illustrative process comes from the "anation" (reaction with an anion) of cobalt(III) complexes:
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- 3+ + SCN- {, NCS}2+
- {, NCS}2+ 2+ + H2O
Read more about this topic: Dissociative Substitution
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“Many are obstinate with regard to the pathway once they have set upon it, few with regard to the goal.”
—Friedrich Nietzsche (1844–1900)