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Does -cf3 group have strong -r/ -m effect? And why?

Does -cf3 group have strong -r/ -m effect? And why?

Grade:12

2 Answers

Bhavya
askIITians Faculty 1281 Points
5 years ago
Dear student
CF3 is a strong -M group because F is the most electronegative element and hence tries to withdraw electron density from benzene ring.
CaPhi
14 Points
5 years ago
But wouldn't that lead to -i effect because electronegativity causes inductive effect but i am asking resonance effect which is because of electron pair shift

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