What is oxidation state of A? What is oxidation state of B? +2 What is oxidation state of C? What is oxidation state of D? What is oxidation state of E? What is oxidation state of F? What is oxidation state of G? The reaction of A to B is: A Ligand Association A Ligand Substitution A Ligand Insertion An Oxidative Addition A Reductive Elimination A B-Elimination A Ligand Dissociation The reaction of D to E is: The reaction of E to F is: The reaction of F to G is: The reaction of G to A is:

Chemistry
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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am
Pd
In the Heck reaction, an alkene is coupled to an aryl (Ar) bromide or aryl iodide with the aid of a Pd catalyst. The actual
catalytically active species is believed to be PdL2 (where L is tri-o-tolylphosphine ligand), which is formed by two
ligand dissociations:
F
G
The PdL₂ thus generated enters into the catalytic cycle. Characterize each step of the mechanism below in terms of the
fundamental reaction types that transition-metal complexes undergo. Give the oxidation state of the metal in each complex.
Pd
Br
H
Br
Ar
HBr
Pd + L
CH₂
A
Ar-Br
#CH₂
Pd
---->
E
H
Pd + L
Br
B
Ar
Br
H
Ar
CH
D
presented by Machman Leaminy
H₂C=CH₂
CH₂
Pd
Br
Pd
---->
C
Ar
Br
+ L
Transcribed Image Text:Macmillan Learnin am Pd In the Heck reaction, an alkene is coupled to an aryl (Ar) bromide or aryl iodide with the aid of a Pd catalyst. The actual catalytically active species is believed to be PdL2 (where L is tri-o-tolylphosphine ligand), which is formed by two ligand dissociations: F G The PdL₂ thus generated enters into the catalytic cycle. Characterize each step of the mechanism below in terms of the fundamental reaction types that transition-metal complexes undergo. Give the oxidation state of the metal in each complex. Pd Br H Br Ar HBr Pd + L CH₂ A Ar-Br #CH₂ Pd ----> E H Pd + L Br B Ar Br H Ar CH D presented by Machman Leaminy H₂C=CH₂ CH₂ Pd Br Pd ----> C Ar Br + L
DI
What is oxidation state of A?
What is oxidation state of B?
+2
What is oxidation state of C?
What is oxidation state of D?
What is oxidation state of E?
What is oxidation state of F?
What is oxidation state of G?
The reaction of A to B is:
A Ligand Association
A Ligand Substitution
A Ligand Insertion
An Oxidative Addition
A Reductive Elimination
A B-Elimination
A Ligand Dissociation
The reaction of D to E is:
The reaction of E to F is:
D
The reaction of F to G is:
The reaction of G to A is:
Transcribed Image Text:DI What is oxidation state of A? What is oxidation state of B? +2 What is oxidation state of C? What is oxidation state of D? What is oxidation state of E? What is oxidation state of F? What is oxidation state of G? The reaction of A to B is: A Ligand Association A Ligand Substitution A Ligand Insertion An Oxidative Addition A Reductive Elimination A B-Elimination A Ligand Dissociation The reaction of D to E is: The reaction of E to F is: D The reaction of F to G is: The reaction of G to A is:
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