Which is a more stable intermediate in each pair? a. b. |...

Name: Problem 86, Chapter 18: Organic Chemistry
Uploaded: 2020-10-31T09:41:40-08:00
Duration: 5 min 19 s
Channel: Zubair Abdulla
Description: Which is a more stable intermediate in each pair? a. b.

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Key Concepts

Reactive Intermediates

Reactive intermediates are transient species that form during a reaction mechanism. These species, such as carbocations, free radicals, or carbanions, exist for a short time and are crucial in determining the course and outcome of a chemical reaction.

Intermediate Stability

The stability of a reaction intermediate is a measure of its relative energy and lifetime during a reaction. More stable intermediates have lower energy, allowing them to exist longer and influence the product distribution. Factors such as electronic delocalization and substituent effects are key contributors to intermediate stability.

Resonance Stabilization

Resonance stabilization refers to the delocalization of electrons across multiple atoms in a molecule. This delocalization spreads out electron density and reduces the overall charge concentration, thereby lowering the energy of the intermediate and increasing its stability.

Hyperconjugation

Hyperconjugation involves the donation of electron density from nearby sigma bonds (typically C–H or C–C bonds) to an adjacent empty or partially filled orbital. This effect helps to stabilize intermediates like carbocations by dispersing charge over a larger volume, which is a key factor in determining the relative stability of intermediates.

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