To match the compounds that gives signal at 2 .0ppm . Concept Introduction : Chemical shift : The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million). Chemical shift = signal frequency- reference frequency frequency of spectrometer ( 10 6 ) Bench mark values : The chemical shift values to remember for the protons below Methyl 0 .9 (chemical shift) Methylene 1 .2 (chemical shift) Methine 1 .7 (chemical shift) Inductive effect : The presence of functional groups at the alpha position has impact on the protons. FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS Oxygen of an alcohol or ether +2 .5 +0 .5 Oxygen of ester +3 .0 +0 .6 Carbonyl groups +1 .0 +0 .2

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Answer 1

Question

Chapter 16.5, Problem 9ATS

Interpretation Introduction

Interpretation: To match the compounds that gives signal at 2.0ppm .

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values: The chemical shift values to remember for the protons below

Methyl 0.9 (chemical shift)
Methylene 1.2 (chemical shift)
Methine 1.7 (chemical shift)

Inductive effect: The presence of functional groups at the alpha position has impact on the protons.

FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether +2.5 +0.5
Oxygen of ester +3.0 +0.6
Carbonyl groups +1.0 +0.2

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Answer 2

Question

Chapter 16.5, Problem 9ATS

Interpretation Introduction

Interpretation: To match the compounds that gives signal at 2.0ppm .

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values: The chemical shift values to remember for the protons below

Methyl 0.9 (chemical shift)
Methylene 1.2 (chemical shift)
Methine 1.7 (chemical shift)

Inductive effect: The presence of functional groups at the alpha position has impact on the protons.

FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether +2.5 +0.5
Oxygen of ester +3.0 +0.6
Carbonyl groups +1.0 +0.2

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Answer 3

Question

Chapter 16.5, Problem 9ATS

Interpretation Introduction

Interpretation: To match the compounds that gives signal at 2.0ppm .

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values: The chemical shift values to remember for the protons below

Methyl 0.9 (chemical shift)
Methylene 1.2 (chemical shift)
Methine 1.7 (chemical shift)

Inductive effect: The presence of functional groups at the alpha position has impact on the protons.

FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether +2.5 +0.5
Oxygen of ester +3.0 +0.6
Carbonyl groups +1.0 +0.2

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Answer 4

Question

Chapter 16.5, Problem 9ATS

Interpretation Introduction

Interpretation: To match the compounds that gives signal at 2.0ppm .

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values: The chemical shift values to remember for the protons below

Methyl 0.9 (chemical shift)
Methylene 1.2 (chemical shift)
Methine 1.7 (chemical shift)

Inductive effect: The presence of functional groups at the alpha position has impact on the protons.

FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether +2.5 +0.5
Oxygen of ester +3.0 +0.6
Carbonyl groups +1.0 +0.2

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Answer 5

Chapter 16.5, Problem 9ATS

Interpretation Introduction

Interpretation: To match the compounds that gives signal at 2.0ppm .

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values: The chemical shift values to remember for the protons below

Methyl 0.9 (chemical shift)
Methylene 1.2 (chemical shift)
Methine 1.7 (chemical shift)

Inductive effect: The presence of functional groups at the alpha position has impact on the protons.

FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether +2.5 +0.5
Oxygen of ester +3.0 +0.6
Carbonyl groups +1.0 +0.2

Answer 6

Chapter 16.5, Problem 9ATS

Interpretation Introduction

Interpretation: To match the compounds that gives signal at 2.0ppm .

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values: The chemical shift values to remember for the protons below

Methyl 0.9 (chemical shift)
Methylene 1.2 (chemical shift)
Methine 1.7 (chemical shift)

Inductive effect: The presence of functional groups at the alpha position has impact on the protons.

FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether +2.5 +0.5
Oxygen of ester +3.0 +0.6
Carbonyl groups +1.0 +0.2

Answer 7

Chapter 16.5, Problem 9ATS

Interpretation Introduction

Interpretation: To match the compounds that gives signal at 2.0ppm .

Concept Introduction:

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS (Tetramethylsilane) shows signal at 0 ppm (parts per million).

Chemical shift = signal frequency- reference frequencyfrequency of spectrometer(106)

Bench mark values: The chemical shift values to remember for the protons below

Methyl 0.9 (chemical shift)
Methylene 1.2 (chemical shift)
Methine 1.7 (chemical shift)

Inductive effect: The presence of functional groups at the alpha position has impact on the protons.

FUNCTIONAL GROUP EFFECT ON THE ALPHA PROTONS EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether +2.5 +0.5
Oxygen of ester +3.0 +0.6
Carbonyl groups +1.0 +0.2

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 16.4 - Prob. 1LTS Ch. 16.4 - Prob. 1PTS Ch. 16.4 - Prob. 2ATS Ch. 16.4 - Prob. 3ATS Ch. 16.4 - Prob. 2LTS Ch. 16.4 - Prob. 4PTS Ch. 16.4 - Prob. 5ATS Ch. 16.4 - Prob. 6ATS Ch. 16.5 - Prob. 3LTS Ch. 16.5 - Prob. 7PTS

Methyl	0.9 (chemical shift)
Methylene	1.2 (chemical shift)
Methine	1.7 (chemical shift)

FUNCTIONAL GROUP	EFFECT ON THE ALPHA PROTONS	EFFECT ON THE BETA PROTONS
Oxygen of an alcohol or ether	+2.5	+0.5
Oxygen of ester	+3.0	+0.6
Carbonyl groups	+1.0	+0.2

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