Solution Found!
Which of the following are correct? Correct any false
Chapter 28, Problem 7P(choose chapter or problem)
Which of the following are correct? Correct any false statements.
a. A conjugated diene with an even number of double bonds undergoes conrotatory ring closure under thermal conditions.
b. A conjugated diene with an antisymmetric HOMO undergoes conrotatory ring closure under thermal conditions.
c. A conjugated diene with an odd number of double bonds has a symmetric HOMO.
Questions & Answers
QUESTION:
Which of the following are correct? Correct any false statements.
a. A conjugated diene with an even number of double bonds undergoes conrotatory ring closure under thermal conditions.
b. A conjugated diene with an antisymmetric HOMO undergoes conrotatory ring closure under thermal conditions.
c. A conjugated diene with an odd number of double bonds has a symmetric HOMO.
ANSWER:Solution 7P
Step 1 of 4
(a) A conjugated diene with an even number of double bonds undergo conrotatory ring closure under thermal conditions.
This statement is correct because-
Conjugated diene has four molecular orbital ,
in which
,
are bonding orbital and
are antibonding orbital/
Under thermal conditions HOMO is
Hence
HOMO-Antisymmetric
(conrotatory ring closure)