Sn1 In Addition To Sn2 Reactions

S_N1 in addition to S_N2 Reactions.

S_N1 Reaction.

1. S_N1 stands for exchange nucleophilic unimolecular.
2. S_N1 is a 2 footstep mechanism.
3. In the 2 footstep S_N1 reaction, the substrate, R - X, commencement ionizes reversibly into R⁺ in addition to  X^- in addition to hence the intermediate carbocation combines amongst the attacking nucleophile, Nu^- to shape the product. 
4. Rate depend entirely on the concentration of the substrate.
5. The nucleophile tin railroad train on the electrophilic carbon from either side (front in addition to backside).
6. It is expected to commencement lodge kinetics.
7. In S_N1 reaction, the production may hold upwardly partially inverted amongst honor to that of starting substrate, largely inverted or inverted to a really pocket-size extent. The production is racemate usually.
8. Reaction is favoured past times polar solvents.
9. Reaction tin occur amongst weak base.
10. S_N1 reactions are to a greater extent than oftentimes than non given past times tert-alkyl halides; 3° > 2° > 1° > CH₃.

S_N2 Reaction.

1. S_N2 stands for exchange nucleophilic bimolecular.
2. S_N2 is a One footstep mechanism.
3. The railroad train on of nucleophile on carbon in addition to deparature of halide ion takes house simultaneously inwards a unmarried step.
4. Rate depends on the concentration of substrate too every bit on the concentration of attacking nucleophile.
5. The nucleophile attacks the electrophilic carbon from the backside.
6. It is expected to hold upwardly minute lodge jinetics. If nevertheless i of the reactants is the solvent, the S_N2 mechanism volition Pb to commencement lodge kinetics.
7. S_N2 Reactions ever continue amongst consummate inversion of configuration (backside attack).
8. Reaction is favoured past times nonpolar solvents.
9. Reaction requires rigid bases.
10. S_N2 are to a greater extent than oftentimes than non given past times main alkyl halides. CH₃ > 1 > 2° > 3°