Ace Organic Chemistry I: The EASY Guide to Ace Organic Chemistry I: (Organic Chemistry Study Guide, Organic Chemistry Review, Concepts, Reaction Mechanisms and Summaries) by Hemsworth Dr. Holden

Author:Hemsworth, Dr. Holden [Hemsworth, Dr. Holden]
Language: eng
Format: azw3
Published: 2015-10-23T16:00:00+00:00

Electron Pushing

Electron pushing (aka arrow pushing) is used to depict the flow of electrons during a chemical reaction.

Arrows are used to indicate movement of electrons

Arrows are never used to indicate the movements of atoms

Make sure an arrow starts from electrons or bonds, never from an atom

Arrows always start at an electron source

Electron source – most commonly, either a pi bond or a lone pair of electrons

Arrows always end at an electron sink

Electron sink – an atom or ion that can accept a new bond or a lone pair of electrons

Keep in mind, bonds may have to be broken to avoid overfilling the valence shell of an atom serving as an electron sink

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