Organic Chemistry As a Second Language, 3e: First Semester Topics

Published by John Wiley & Sons
ISBN 10: 111801040X
ISBN 13: 978-1-11801-040-2

Chapter 2 - Resonance - 2.7 Drawing Resonance Structures - By Recognizing Patterns - Problems - Page 47: 2.60


There will be one other ressonance structure. It will follow the first pattern. - There will be a pi bond between the chloride and the carbon in the center. - The pi bond from the oxygen will be removed. - The oxygen will get a negative charge. - The chloride will get a positive charge.

Work Step by Step

1. Draw the lone pairs. 2. Find which pattern fits the structure. It is the first one, a lone pair (from the chloride) next to a pi bond. 3. Draw the arrows: Follow the pattern for a lone pair next to a pi bond. The electrons from the pi bond will move to the oxygen above them, so the carbon that lost the pi bond will get a positive charge. Then, the lone pairs from the chloride will form a pi bond with this positive carbon. 4. Do the changes based on the arrows. * Don't forget the formal charges!
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