Question

Differences between SN1 and SN2 reactions?

Answer 1

Well, for both substitution reactions, the signal difference is....

Explanation:

For `S_N1` reactions, bond BREAKING is the rate determining step. And for `S_N2` reactions, bond MAKING is the rate determining step. Given this property, `S_N2` reactions proceed with retention of stereochemistry...i.e. the geometry of the substrate influences the geometry of the product (whether geometry is inverted or retained is another matter...the point is that geometry is preserved in an `S_N2` reaction). Stereochemistry is NOT preserved in an `S_N1` reaction. You should read your organic text for details....