Exhibit 13-11 Answer the question(s) for the compound whose S1U1P11S1S1P0H NMR spectra is shown below. CS1U1B15S1U1B0HS1U1B112S1U1B0O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-11.Describe each signal in the 1H NMR in terms of its integration,splitting and chemical shift.

In looking at the spectrum,it is importa

Propose a structure for an alkyl halide,C4H9Br,that has the following 13C NMR data: Broadband decoupled 13C NMR: 18.3,38.6,60.2 δ DEPT-90: 38.6 δ DEPT-135: positive peak at 18.3,60.2 δ;negative peak at 38.6 δ

From the molecular formula,we know that

How would you use 1H and 13C NMR to help you distinguish between these two isomeric structures?

@#IMG-DLM& @#IMG-DLM& # peaks Distinguishing Absorptions 1 H 5

Exhibit 13-9 To answer the following question(s),consider the data and S1U1P11S1S1P0H NMR spectrum below: The mass spectrum of this compound shows a molecular ion at m/z = 113,the IR spectrum has characteristic absorptions at 2270 and 1735 cm−S1U1P11S1S1P0,and the S1U1P113S1S1P0C NMR spectrum has five signals. Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-9.Describe the signals at 4.35 δ and 1.3 δ in terms of their integration,splitting and chemical shift.

The signal at 4.35 δ is owing to two equ

Which structure of molecular formula C4H8Cl2 fits both the 1H NMR and 13C NMR spectra shown below?

A) B) C) D) Spectra obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ A) B) C) D) Spectra obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/

Exhibit 13-9 To answer the following question(s),consider the data and S1U1P11S1S1P0H NMR spectrum below: The mass spectrum of this compound shows a molecular ion at m/z = 113,the IR spectrum has characteristic absorptions at 2270 and 1735 cm−S1U1P11S1S1P0,and the S1U1P113S1S1P0C NMR spectrum has five signals. Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-9.Based on the mass spectral data and the IR data,what functional groups are present in this compound?

A molecular ion of mass 113 indicates an

Exhibit 13-9 To answer the following question(s),consider the data and S1U1P11S1S1P0H NMR spectrum below: The mass spectrum of this compound shows a molecular ion at m/z = 113,the IR spectrum has characteristic absorptions at 2270 and 1735 cm−S1U1P11S1S1P0,and the S1U1P113S1S1P0C NMR spectrum has five signals. Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-9.Describe the signal at 3.5 δ in terms of its integration,splitting pattern and chemical shift.

The integration of the signal at 3.5 δ i

Exam 13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Exhibit 13-1 The following question(s) pertain to the charting of NMR spectra.MATCH a term to each description below. -_ The NMR charts are calibrated using an arbitrary scale that is divided into _ units.

(Multiple Choice)

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Question 21

Explain why all protons in a molecule do not absorb rf energy at the same frequency.

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Question 22

Exhibit 13-11 Answer the question(s) for the compound whose ¹H NMR spectra is shown below. C₅H₁₂O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-11.Propose a structure for this compound.

(Essay)

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Question 23

Exhibit 13-11 Answer the question(s) for the compound whose ¹H NMR spectra is shown below. C₅H₁₂O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-11.Describe each signal in the ¹H NMR in terms of its integration,splitting and chemical shift.

(Essay)

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Question 24

For a nucleus to exhibit the nuclear magnetic resonance phenomenon,it must be magnetic.Magnetic nuclei include:

(Multiple Choice)

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Question 25

Propose a structure for an alkyl halide,C₄H₉Br,that has the following ¹³C NMR data: Broadband decoupled ¹³C NMR: 18.3,38.6,60.2 δ DEPT-90: 38.6 δ DEPT-135: positive peak at 18.3,60.2 δ;negative peak at 38.6 δ

(Essay)

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Question 26

Exhibit 13-12 Answer the question(s) for the compound whose ¹H NMR spectra is shown below. C₈H₇ClO Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-12.Describe the signal at 2.6 δ in terms of integration,splitting and chemical shift.

(Essay)

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Question 27

How would you use ¹H and ¹³C NMR to help you distinguish between these two isomeric structures?

(Essay)

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Question 28

Identify the two numbered hydrogen atoms as:

(Multiple Choice)

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Question 29

Exhibit 13-9 To answer the following question(s),consider the data and ¹H NMR spectrum below: The mass spectrum of this compound shows a molecular ion at m/z = 113,the IR spectrum has characteristic absorptions at 2270 and 1735 cm−¹,and the ¹³C NMR spectrum has five signals. Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-9.Describe the signals at 4.35 δ and 1.3 δ in terms of their integration,splitting and chemical shift.

(Essay)

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Question 30

Which structure of molecular formula C₄H₈Cl₂ fits both the ¹H NMR and ¹³C NMR spectra shown below?

(Multiple Choice)

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Question 31

What would be the approximate positions at which you would expect 2-chloro-3-butyne to show ¹³C NMR absorptions?

(Essay)

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Question 32

The molecular formula of a certain compound is C₄H₉OBr.It has the following ¹H NMR data: 1.30 δ (6H,singlet),3.94 δ (2H,doublet),and 2.51 δ (1H,triplet).Propose a structure for the compound using the information given.

(Essay)

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Question 33

Exhibit 13-9 To answer the following question(s),consider the data and ¹H NMR spectrum below: The mass spectrum of this compound shows a molecular ion at m/z = 113,the IR spectrum has characteristic absorptions at 2270 and 1735 cm−¹,and the ¹³C NMR spectrum has five signals. Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-9.Based on the mass spectral data and the IR data,what functional groups are present in this compound?

(Essay)

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Question 34

Describe how you could differentiate the following compounds using a DEPT NMR experiment.

(Essay)

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Question 35

Exhibit 13-9 To answer the following question(s),consider the data and ¹H NMR spectrum below: The mass spectrum of this compound shows a molecular ion at m/z = 113,the IR spectrum has characteristic absorptions at 2270 and 1735 cm−¹,and the ¹³C NMR spectrum has five signals. Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-9.Describe the signal at 3.5 δ in terms of its integration,splitting pattern and chemical shift.

(Essay)

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Question 36

How many signals would appear in the proton NMR for the following substance? Atoms other than carbon and hydrogen are labeled.

(Multiple Choice)

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Question 37

Propose a structure for a compound,C₆H₁₄O,with the following ¹³C NMR spectral data: Broadband decoupled ¹³C NMR: 23.0,68.4 δ DEPT-90: 68.4 δ DEPT-135: positive peaks at 23.0,68.4 δ;no negative peaks

(Essay)

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Question 38

Consider the following structure.Atoms other than carbon and hydrogen are labeled.The carbon atoms are designated by numbers. Which carbon atom(s) will produce a signal in a DEPT-90 spectrum?

(Multiple Choice)

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Question 39

Exhibit 13-1 The following question(s) pertain to the charting of NMR spectra.MATCH a term to each description below. -_ When looking at an NMR chart the right-hand part of the chart is the _.

(Multiple Choice)

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Question 40

Showing 21 - 40 of 46

Exam 13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Exhibit 13-1 The following question(s) pertain to the charting of NMR spectra.MATCH a term to each description below. -_____ The NMR charts are calibrated using an arbitrary scale that is divided into _____ units.

Explain why all protons in a molecule do not absorb rf energy at the same frequency.

Exhibit 13-11 Answer the question(s) for the compound whose 1H NMR spectra is shown below. C5H12O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-11.Propose a structure for this compound.

Exhibit 13-11 Answer the question(s) for the compound whose 1H NMR spectra is shown below. C5H12O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-11.Describe each signal in the 1H NMR in terms of its integration,splitting and chemical shift.

For a nucleus to exhibit the nuclear magnetic resonance phenomenon,it must be magnetic.Magnetic nuclei include:

​Propose a structure for an alkyl halide,C4H9Br,that has the following 13C NMR data: Broadband decoupled 13C NMR: 18.3,38.6,60.2 δ DEPT-90: 38.6 δ DEPT-135: positive peak at 18.3,60.2 δ;negative peak at 38.6 δ

Exhibit 13-12 Answer the question(s) for the compound whose 1H NMR spectra is shown below. C8H7ClO Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-12.Describe the signal at 2.6 δ in terms of integration,splitting and chemical shift.

How would you use 1H and 13C NMR to help you distinguish between these two isomeric structures?

Identify the two numbered hydrogen atoms as:

Which structure of molecular formula C4H8Cl2 fits both the 1H NMR and 13C NMR spectra shown below?

​What would be the approximate positions at which you would expect 2-chloro-3-butyne to show 13C NMR absorptions?

​The molecular formula of a certain compound is C4H9OBr.It has the following 1H NMR data: 1.30 δ (6H,singlet),3.94 δ (2H,doublet),and 2.51 δ (1H,triplet).Propose a structure for the compound using the information given.

Describe how you could differentiate the following compounds using a DEPT NMR experiment.

How many signals would appear in the proton NMR for the following substance? Atoms other than carbon and hydrogen are labeled.

Propose a structure for a compound,C6H14O,with the following 13C NMR spectral data: Broadband decoupled 13C NMR: 23.0,68.4 δ DEPT-90: 68.4 δ DEPT-135: positive peaks at 23.0,68.4 δ;no negative peaks

Consider the following structure.Atoms other than carbon and hydrogen are labeled.The carbon atoms are designated by numbers. Which carbon atom(s) will produce a signal in a DEPT-90 spectrum?

Exhibit 13-1 The following question(s) pertain to the charting of NMR spectra.MATCH a term to each description below. -_____ When looking at an NMR chart the right-hand part of the chart is the _____.

Structure and Bonding

Polar Covalent Bonds;acids and Bases

Organic Compounds: Alkanes and Their Stereochemistry

Organic Compounds: Cycloalkanes and Their Stereochemistry

Stereochemistry at Tetrahedral Centers

An Overview of Organic Reactions

Par 1

Alkenes: Structure and Reactivity

Alkenes: Reactions and Synthesis

Alkynes: an Introduction to Organic Synthesis

Organohalides

Reactions of Alkyl Halides: Nucleophilic Substitutions and Eliminations

Par 2

Structure Determination: Mass Spectrometry and Infrared Spectroscopy

Conjugated Compounds and Ultraviolet Spectroscopy

Par 3

Benzene and Aromaticity

Chemistry of Benzene: Electrophilic Aromatic Substitution

Alcohols and Phenols

Ethers and Epoxides;thiols and Sulfides

Aldehydes and Ketones: Nucleophilic Addition Reactions

Par 4

Carboxylic Acids and Nitriles

Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution Reactions

Carbonyl Condensation Reactions

Par 5

Amines and Heterocycles

Biomolecules: Carbohydrates

Biomolecules: Amino Acids,peptides,and Proteins

Par 7

Biomolecules: Lipids

Biomolecules: Nucleic Acids

The Organic Chemistry of Metabolic Pathways

Orbitals and Organic Chemistry: Pericyclic Reactions

Synthetic Polymers

Par 1

Filters

Exhibit 13-1 The following question(s) pertain to the charting of NMR spectra.MATCH a term to each description below. -_ The NMR charts are calibrated using an arbitrary scale that is divided into _ units.

Exhibit 13-11 Answer the question(s) for the compound whose ¹H NMR spectra is shown below. C₅H₁₂O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-11.Propose a structure for this compound.

Exhibit 13-11 Answer the question(s) for the compound whose ¹H NMR spectra is shown below. C₅H₁₂O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-11.Describe each signal in the ¹H NMR in terms of its integration,splitting and chemical shift.

Propose a structure for an alkyl halide,C₄H₉Br,that has the following ¹³C NMR data: Broadband decoupled ¹³C NMR: 18.3,38.6,60.2 δ DEPT-90: 38.6 δ DEPT-135: positive peak at 18.3,60.2 δ;negative peak at 38.6 δ

Exhibit 13-12 Answer the question(s) for the compound whose ¹H NMR spectra is shown below. C₈H₇ClO Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-12.Describe the signal at 2.6 δ in terms of integration,splitting and chemical shift.

How would you use ¹H and ¹³C NMR to help you distinguish between these two isomeric structures?

Which structure of molecular formula C₄H₈Cl₂ fits both the ¹H NMR and ¹³C NMR spectra shown below?

What would be the approximate positions at which you would expect 2-chloro-3-butyne to show ¹³C NMR absorptions?

The molecular formula of a certain compound is C₄H₉OBr.It has the following ¹H NMR data: 1.30 δ (6H,singlet),3.94 δ (2H,doublet),and 2.51 δ (1H,triplet).Propose a structure for the compound using the information given.

Propose a structure for a compound,C₆H₁₄O,with the following ¹³C NMR spectral data: Broadband decoupled ¹³C NMR: 23.0,68.4 δ DEPT-90: 68.4 δ DEPT-135: positive peaks at 23.0,68.4 δ;no negative peaks

Exhibit 13-1 The following question(s) pertain to the charting of NMR spectra.MATCH a term to each description below. -_ When looking at an NMR chart the right-hand part of the chart is the _.