During SN1, mechanism, nucleophile can attack on the halogen carbon from which orientation?
Correct answer: C. From both sides
- A. From opposite side of leaving group
- B. From front of leaving group
- C. From both sides
- D. None of these
Explanation
OPTION A: It can attack from both sides either from the opposite side of leaving a group or from the front of leaving the group.OPTION B: During the SN1 mechanism, nucleophiles can attack the halogen carbon from both sides. So, this answer is not correct.OPTION C: Since the nucleophile attacks the carbocation only after the leaving group has departed, there is no need for a back-side attack. The carbocation and its substituents are all in the same plane meaning that the nucleophile can attack from either side. OPTION D: This option is not correct.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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