Flag Organic Chemistry> basicity of amines...
question mark

why effect of resonance isn't considered in comparing basicity of amines

hemant joshi , 14 Years ago
Grade 12
anser 2 Answers
Ashwin Sinha

Last Activity: 14 Years ago

Dear Hemant,

 It is so, bcoz of +I effects of alkyl groups attached to Nitrogen!!!!! It is much dominant here!!!!

 

         Good Luck!!!!!

 

 Plz. approve my answer by clicking 'Yes' given below!!!!  Plz. Plz. Plz.!!!!!!!! Don't forget!!!!!!Smile

SAGAR SINGH - IIT DELHI

Last Activity: 14 Years ago

Although resonance delocalization generally reduces the basicity of amines, a dramatic example of the reverse effect is found in the compound guanidine (pKa = 13.6). Here, as shown below, resonance stabilization of the base is small, due to charge separation, while the conjugate acid is stabilized strongly by charge delocalization. Consequently, aqueous solutions of guanidine are nearly as basic as are solutions of sodium hydroxide.

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments