what is mean by +I inductive effect and why it is responsible for basicity of amines?
Asked by | 1st Apr, 2013, 10:44: PM
Inductive effect is the process of electron displacement of electrons along the chain of carbon atoms due to the presence of a polar covalent bond at one end of the chain. Atoms or groups which push electron density away from themselves exhibit positive Inductive effect (+I). These atoms or groups have a greater electron releasing power than hydrogen.
Amines are basic because they possess a pair of unshared electrons, which they can share with other atoms. These unshared electrons create an electron density around the nitrogen atom. The greater the electron density, the more basic the molecule. Groups that donate or supply electrons will increase the basicity of amines. Due to +I effect of the methyl group, the tertiary amine becomes most basic due to more electron density and primary amine becomes least basic due to less electron density.
Answered by | 2nd Apr, 2013, 11:03: AM
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