university of pennsylvania college of general studies professor william a price ph d chem 241 601
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University Of Pennsylvania College of General Studies Professor William A. Price, Ph.D. CHEM 241-601. Organic Chemistry , 9 th Edition By T.W. Graham Solomons. From the Bark of the Pacific Yew Tree. Introduction: Structure and Bonding. Atomic structure Lewis Structures Resonance

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university of pennsylvania college of general studies professor william a price ph d chem 241 601

University Of PennsylvaniaCollege of General StudiesProfessor William A. Price, Ph.D.CHEM 241-601

Organic Chemistry, 9th Edition

By T.W. Graham Solomons

introduction structure and bonding

Introduction: Structure and Bonding

Atomic structure

Lewis Structures

Resonance

Structural Formulas

Acids and Bases

resonance rules
Resonance Rules
  • Cannot break single (sigma) bonds
  • Only electrons move, not atoms

3 possibilities:

    • Lone pair of e- to adjacent bond position
      • Forms p bond

- p bond to adjacent atom

- p bond to adjacent bond position

propose lewis structures
Propose Lewis Structures
  • H2CO2 b) O3 c) N2O

d) NH3O e) C2H3ClO f) C2H5NO 

problem
Problem

Draw [NO2]+ and [NO2]-. Which ion has a “localized” charge and which has a “delocalized” charge. Explain.

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