Chapter 14: Q.21558-14-48P (page 563)

Question: How many ¹³C NMR signals do each compound exhibit?

Short Answer

Expert verified

Answer

a. Five

b. Three

c. Seven

d. Three

e. Seven

f. Five

g. Four

h. Three

Step by step solution

Step 1: 13C NMR spectroscopy

¹³C Spectroscopy gives the high value of chemical shift signal when the carbon-13 is present in the vicinity of the electron-withdrawing groups.

¹³C Spectroscopy gives the low value of chemical shift signal when the carbon-13 is present in the vicinity of the electron-rich groups.

Explanation

The different signals of ¹³C spectroscopy are represented as:

It has five signals due to the presence of five different ¹³C .

¹³C signal

It has three signals due to the presence of three different ¹³C .

¹³C signal

It has seven signals due to the presence of seven different ¹³C .

¹³C signal

It has three signals due to the presence of three different ¹³C .

¹³C signal

It has seven signals due to the presence of seven different ¹³C .

¹³C signal

It has five signals due to the presence of five different ¹³C .

¹³C signal

It has four signals due to the presence of four different ¹³C .

¹³C signal

It has three signals due to the presence of three different ¹³C

¹³C signal

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

Recommended explanations on Chemistry Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Question: How many ¹³C NMR signals do each compound exhibit?

Short Answer

Step by step solution

Step 1: 13C NMR spectroscopy

Explanation

One App. One Place for Learning.

Most popular questions from this chapter

Identify the carbon atoms that give rise to the signals in the \)^{{\bf{13}}}{\bf{C}}\) NMR spectrum of each compound.

a. \){\bf{C}}{{\bf{H}}_{\bf{3}}}{\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{OH}}\); \)^{{\bf{13}}}{\bf{C}}\) NMR: 14, 19, 35, and 62 ppm

b. \){\left( {{\bf{C}}{{\bf{H}}_{\bf{3}}}} \right)_{\bf{2}}}{\bf{CHCHO}}\); \)^{{\bf{13}}}{\bf{C}}\) NMR: 16, 41, and 205 ppm

c. \){\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{ = CHCH}}\left( {{\bf{OH}}} \right){\bf{C}}{{\bf{H}}_{\bf{3}}}\); \)^{{\bf{13}}}{\bf{C}}\) NMR: 23, 69, 113, and 143 ppm

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Making Measurements

The Earths Atmosphere

Inorganic Chemistry

Chemistry Branches

Ionic and Molecular Compounds

Study anywhere. Anytime. Across all devices.

Company

Product

Help

Question: How many 13C NMR signals do each compound exhibit?

Short Answer

Step by step solution

Step 1: 13C NMR spectroscopy

Explanation

One App. One Place for Learning.

Most popular questions from this chapter

Identify the carbon atoms that give rise to the signals in the \)^{{\bf{13}}}{\bf{C}}\) NMR spectrum of each compound.

a. \){\bf{C}}{{\bf{H}}_{\bf{3}}}{\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{OH}}\); \)^{{\bf{13}}}{\bf{C}}\) NMR: 14, 19, 35, and 62 ppm

b. \){\left( {{\bf{C}}{{\bf{H}}_{\bf{3}}}} \right)_{\bf{2}}}{\bf{CHCHO}}\); \)^{{\bf{13}}}{\bf{C}}\) NMR: 16, 41, and 205 ppm

c. \){\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{ = CHCH}}\left( {{\bf{OH}}} \right){\bf{C}}{{\bf{H}}_{\bf{3}}}\); \)^{{\bf{13}}}{\bf{C}}\) NMR: 23, 69, 113, and 143 ppm

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Making Measurements

The Earths Atmosphere

Inorganic Chemistry

Chemistry Branches

Ionic and Molecular Compounds

Study anywhere. Anytime. Across all devices.

Question: How many ¹³C NMR signals do each compound exhibit?