A pi-bond adjacent to a filled p-orbital 00 An empty p-orbital next to a lone pair of electrons (in a p-orbital) 美 -

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter3: Electron Orbitals
Section: Chapter Questions
Problem 8E
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I'm struggling with these descriptions and I can't seem to find a good example for them. Can you elaborate the steps?

C. Use this table to describe the patterns that help us to recognize when a molecule is described by
resonance structures.
Description
Example 1
Example 2
Pattern Two adjacent pi-bonds
1
J.
Pattern A pi-bond adjacent to an
empty p-orbital
Pattern A pi-bond adjacent to a
filled p-orbital
3
Pattern An empty p-orbital next to
a lone pair of electrons (in
a p-orbital)
nehned
Flect/Discuss
nen a molecule is described by multiple resonance structures, the true electronic structure is a blend
eighted average) of the resonance structures. What factors should we use to determine if two resonance
uctures are "equivalent" or if one is more significant than another?
Contribulors do
heve to be
guiu alent blc te resondence Stutue noed to
Resonarce
contribute egvally do the hybrid,
Besenance Structere do not cheuree He relatie positiong of te atoms, The. sleeleron
of He lewis structue remains the same, only electron locarions chenge,
not
forms
Charged resonance
we absolutely maust form
t the negative Cherrge on Hhe arom best abe
are less Stable tran neutral resonance forms . So it
cherged resonance form, it meakes
sense
stabilize id,
ro
0
Transcribed Image Text:C. Use this table to describe the patterns that help us to recognize when a molecule is described by resonance structures. Description Example 1 Example 2 Pattern Two adjacent pi-bonds 1 J. Pattern A pi-bond adjacent to an empty p-orbital Pattern A pi-bond adjacent to a filled p-orbital 3 Pattern An empty p-orbital next to a lone pair of electrons (in a p-orbital) nehned Flect/Discuss nen a molecule is described by multiple resonance structures, the true electronic structure is a blend eighted average) of the resonance structures. What factors should we use to determine if two resonance uctures are "equivalent" or if one is more significant than another? Contribulors do heve to be guiu alent blc te resondence Stutue noed to Resonarce contribute egvally do the hybrid, Besenance Structere do not cheuree He relatie positiong of te atoms, The. sleeleron of He lewis structue remains the same, only electron locarions chenge, not forms Charged resonance we absolutely maust form t the negative Cherrge on Hhe arom best abe are less Stable tran neutral resonance forms . So it cherged resonance form, it meakes sense stabilize id, ro 0
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