EBK A SMALL SCALE APPROACH TO ORGANIC L
4th Edition
ISBN: 9781305446021
Author: Lampman
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 54, Problem 1Q
Interpretation Introduction
Interpretation:
The benzophenone n-Π* triplet T1 without having benzophenone pass through its first singlet stateneeds to be determined.
Concept Introduction:
In the singlet state; the orientation of electrons has the same spin while in the triplet state; the orientation of electrons has the opposite spin.
Expert Solution & Answer
Explanation of Solution
The reaction between benzophenone and isopropyl alcohol is shown below:
The quantum yield for the given reaction is a unity which states that each molecule of excited benzophenone gives one molecule of benzo pinacol. In the given reaction; fluorescence is not observed, a triplet excited state is involved. n-Π* triplet excited state takes a hydrogen atom from isopropanol.
The mechanism of the given reaction is shown below:
Where,
S0 = singlet ground state
S1 = first singlet excited state
T1 = first triplet excited state
ISC = intersystem crossing
According to the mechanism; it shows that the singlet excited state of benzophenone gores through intersystem crossing to triplet state very readily. Therefore, it is the triplet state that is involved.
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Chapter 54 Solutions
EBK A SMALL SCALE APPROACH TO ORGANIC L
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