NH2 is electron acceptor or electron donor?

[kelvin macks]

i have attached 2 photos here...

the book said the NH2 exhibit negative inductive effect (negative inductive effect means electron acceptor) , and is ring activating group, but ring activating group is electron donor. which is correct?

So NH2 is electron donor or electron acceptor?

 

[Lok]

They were supposed to imply "generally".

 

[kelvin macks]

They were supposed to imply "generally".

can you explain more detailed?

 

[DrClaude]

So NH2 is electron donor or electron acceptor?

Both! While NH₂ is a negative inductor, there is a resonance structure between NH₂ and benzene that makes it a ring activator (the resonance dominates over the electronegativity).

You can find a nice picture of the resonance here: http://www.chm.wright.edu/feld/chm212/eas.pdf

 

[LudusRex]

Based on the information provided, it seems that NH2 can exhibit both electron accepting and electron donating properties. The negative inductive effect suggests that it can act as an electron acceptor, while being a ring activating group suggests that it can also act as an electron donor. The context in which NH2 is being used and the specific chemical reactions it is involved in would determine whether it acts as an electron donor or acceptor. It is important to consider all factors and not just one aspect when determining the overall behavior of a molecule.