Given the task definition and input, reply with output. In this task, you are given a sentence in the English language. Your job is to translate the English sentence into the Spanish language.

The nucleophilic substitution reactions of halogenated derivatives can proceed through a bimolecular (SN2) or unimolecular (SN1) mechanism. Which of the following characteristics is applicable to the SN1 reaction ?

Las reacciones de sustitución nucleófila de derivados halogenados pueden transcurrir por un mecanismo bimolecular (SN2) o unimolecular (SN1). ¿Cuál de las características siguientes es aplicable a la reacción SN1?