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The correct statement regarding the basicity of arylamines is
- Option 1)
Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring
electron system.
- Option 2)
Arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring
- Option 3)
Arylamines are generally more basic than alkylamines because of aryl group.
- Option 4)
Arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridized.
Answers (1)
As discussed in
Basicity of Aromatic Amines -
The unshared pair of electrons at the nitrogen atom is in resonance with the benzene ring and hence not fully available for donation as in the case of aniline.
-
And,
General order of basicity -
Aliphatic Amines > Ammonia > Aromatic Amines
-
Option 1)
Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring electron system.
This option is correct.
Option 2)
Arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring electron system.
This option is incorrect.
Option 3)
Arylamines are generally more basic than alkylamines because of aryl group.
This option is incorrect.
Option 4)
Arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridized.
This option is incorrect.
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