Question 1

Draw the MO energy diagram for the cycloheptatrienyl anion and classify the anion as aromatic or antiaromatic.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> 4n (8) π ...

Question 2

Draw the resonance structures of cyclooctatetraene.

Accepted Answer

The answer of Draw the resonance structures of cyclooctatetraene....

Question 3

Which of the choices arranges numbered protons in the following substance in order of increasing downfield chemical shift in a proton NMR? Atoms other than carbon and hydrogen are labeled.

Accepted Answer

A)  1 = 2 
B)  4 
C)  4 = 3 
D)  1 = 2 < 4 < 3E) A) and D)
F) All of the above

Question 4

Exhibit 15-6
Consider the data below to answer the following question(s).
CS1U1B19S1U1B0HS1U1B112S1U1B0;S1U1P11S1S1P0H NMR:
6.65 δ (singlet,3H)
2.25 δ (singlet,9H)
-Refer to Exhibit 15-6.Describe the signal at 6.65 δ in terms of its splitting,integration and chemical shift.

Accepted Answer

The signal at 6.65 δ indicates...

Question 5

​Draw the different resonance forms of phenanthrene.

Accepted Answer

The answer of ​Draw the different resonance forms of phenanthrene....

Question 6

Draw: p-chlorobenzaldehyde

Accepted Answer

The answer of Draw: p-chlorobenzaldehyde...

Question 7

Most alkyl halides are nonpolar covalent compounds and,therefore,are soluble in nonpolar solvents and insoluble in water.Cycloheptatrienyl bromide is an unusual alkyl halide in that it is insoluble in nonpolar solvents,but is readily soluble in water! This behavior is consistent with cycloheptatrienyl bromide being an ionic compound.Why does cycloheptatrienyl bromide exist as an ionic compound? Explain by comparing the covalent structure to the ionic structure.

Accepted Answer

In the covalent structure,the carbon bon...

Exam 15: Benzene and Aromaticity

Which of the choices arranges numbered protons in the following substance in order of increasing downfield chemical shift in a proton NMR? Atoms other than carbon and hydrogen are labeled.

Correct Answer
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Exhibit 15-6 Consider the data below to answer the following question(s). C₉H₁₂;¹H NMR: 6.65 δ (singlet,3H) 2.25 δ (singlet,9H) -Refer to Exhibit 15-6.Describe the signal at 6.65 δ in terms of its splitting,integration and chemical shift.

Correct Answer
verified
The signal at 6.65 δ indicates...
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Correct Answer
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In the covalent structure,the carbon bon...
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Draw the different resonance forms of phenanthrene.

Correct Answer
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Draw: p-chlorobenzaldehyde

Correct Answer
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Draw the MO energy diagram for the cycloheptatrienyl anion and classify the anion as aromatic or antiaromatic.

Correct Answer
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4n (8) π ...
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Draw the resonance structures of cyclooctatetraene.

Correct Answer
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Exam 15: Benzene and Aromaticity

Which of the choices arranges numbered protons in the following substance in order of increasing downfield chemical shift in a proton NMR? Atoms other than carbon and hydrogen are labeled.

Correct AnswerverifiedShow Answer

Exhibit 15-6 Consider the data below to answer the following question(s). C9H12;1H NMR: 6.65 δ (singlet,3H) 2.25 δ (singlet,9H) -Refer to Exhibit 15-6.Describe the signal at 6.65 δ in terms of its splitting,integration and chemical shift.

Correct AnswerverifiedThe signal at 6.65 δ indicates...View AnswerShow Answer

Correct AnswerverifiedIn the covalent structure,the carbon bon...View AnswerShow Answer

​Draw the different resonance forms of phenanthrene.

Correct AnswerverifiedShow Answer

Draw: p-chlorobenzaldehyde

Correct AnswerverifiedShow Answer

Draw the MO energy diagram for the cycloheptatrienyl anion and classify the anion as aromatic or antiaromatic.

Correct Answerverified 4n (8) π ...View AnswerShow Answer

Draw the resonance structures of cyclooctatetraene.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Exhibit 15-6 Consider the data below to answer the following question(s). C₉H₁₂;¹H NMR: 6.65 δ (singlet,3H) 2.25 δ (singlet,9H) -Refer to Exhibit 15-6.Describe the signal at 6.65 δ in terms of its splitting,integration and chemical shift.

Correct Answer
verified
The signal at 6.65 δ indicates...
View Answer

Correct Answer
verified
In the covalent structure,the carbon bon...
View Answer

Draw the different resonance forms of phenanthrene.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
4n (8) π ...
View Answer

Correct Answer
verified