is secondary carbanion more stable than primary??? if yes,why??what is the order of stabilities of carbanions and carbocations?? Can i get the explanation with reasons.....
The stability of carbanion ion depends upon the inductive effect. Tertiary carbanion ion contains highest +I effect which increases electron density at central carbon making it highly unstable, while primary carbanion ion is highly stability. The decreasing order of stability is 1° > 2° > 3°
The reverse effect is found in carbocations, in which the stability increase due to +I effect of the methyl group which decreases the positive charge at central carbon. Thus Tertiary carbocation is highly stable while primary carbocation is least stable.