How many signals would you expect to see in the 1H NMR spectrum of the following compound?

A) 2 B) 4 C) 3 D) 5 E) 6 A) 2 B) 4 C) 3 D) 5 E) 6

How many signals would you expect to see in the 1H NMR spectrum of the following compound? CH3CH2CH2CH3

A) 1 B) 3 C) 2 D) 4 E) 6 A) 1 B) 3 C) 2 D) 4 E) 6

Deduce the identity of the compound from the data provided. C5H8O4: IR (cm-1): 2800-3300 (broad), 2950, 1740 13C NMR (δ, splitting): 17.3 (q), 44.3 (s), 210.5 (s)

A) HO2CC(CH3)2CO2H B) CH3O2CCH2CO2CH3 C) HO2CCH2CH2CH2CO2H D) CH3O2CCH2CH2CO2H E) CH3O2CCO2CH2CH3 A) HO2CC(CH3)2CO2H B) CH3O2CCH2CO2CH3 C) HO2CCH2CH2CH2CO2H D) CH3O2CCH2CH2CO2H E) CH3O2CCO2CH2CH3

Exam 15: Nmr Spectroscopy

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Give the structure of a compound that has a formula of C₈H₁₀O₂ and has signals in the ¹³C NMR spectrum at 54.8 ppm (CH₃), 63.3 ppm (CH₂), 113.6 ppm (CH), 128.3 ppm (CH), 134.11 ppm (C), and 158.6 ppm (C).

(Multiple Choice)

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Question 21

Deduce the identity of the following compound from the spectral data given. C₉H₁₀O₂: ¹³C NMR, δ 18.06 (quartet), 45.40 (doublet), 127.32 (doublet), 127.55 (doublet), 128.61 (doublet), 139.70 (singlet), 180.98 (singlet); IR, broad 3500-2800, 1708 cm^-1

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Question 22

Which of the following protons gives an NMR signal with the highest chemical shift value (farthest downfield)? (CH₃)₂CH-O-CH₂CH₂CH₃ 1 2 3 4 5

(Multiple Choice)

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Question 23

Provide the structure that is consistent with the data below. C₇H₁₄O₂ IR (cm^-1): 2950, 1750 ¹H NMR (d): 2.3 (2H, q), 1.0 (3H, t), 0.9 (9H, s) ¹³C NMR (d): 185 (s), 78 (s), 29 (t), 14 (q), 12 (q)

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Question 24

What information does a COSY spectrum give?

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Question 25

What multiplicities are observed in the spin coupled ¹³C NMR spectrum of 2,3-dimethyl-2-butene?

(Short Answer)

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Question 26

Provide the structure that is consistent with the data below. C₅H₈Cl₂ IR (cm^-1): 2950 ¹H NMR (d): 1.4 (4H, t), 1.2 (4H, t) ¹³C NMR (d): 62 (s), 26 (t), 23 (t)

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Question 27

Give the structure of a compound that has a formula of C₄H₇ClO₂ and has a triplet (3H, 1.1 ppm), quintet (2H, 1.2 ppm), triplet (1H, 4.4 ppm), and singlet (1H, 11.6 ppm)in the ¹H NMR spectrum.

(Multiple Choice)

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Question 28

How many signals would you expect to see in the ¹H NMR spectrum of the following compound?

(Multiple Choice)

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Question 29

Give the structure for the compound that has a formula of C₁₀H₁₂O and the following¹H NMR and ¹³C NMR spectra. Label the hydrogens and the carbons. ¹H NMR: 1.2 ppm (t, 3H); 2.3 ppm (s, 3H); 2.6 ppm (q, 2H), 7.2 ppm (d, 2H), and 7.8 ppm (d, 2H). ¹³C NMR: 7.0 ppm (CH₃); 20.9 ppm (CH₃); 32.0 ppm (CH₂); 128.0 (CH), 129.1 ppm (CH), 134.0 ppm (C); 141.0 ppm(C); and 198.1 ppm (C).

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Question 30

Deduce the identity of the following compound from the ¹H NMR data given. C₄H₇BrO: δ 2.2 (3H, singlet), 3.5 (2H, triplet), 4.5 (2H, triplet)

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Question 31

Provide the structure that is consistent with the data below. C₅H₁₀O IR (cm^-1): 2950 ¹H NMR (d): 3.5 (4H, s), 0.9 (6H, s) ¹³C NMR (d): 64 (t), 41 (s), 12 (q)

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Question 32

How many signals would you expect to see in the ¹H NMR spectrum of the following compound? CH₃CH₂CH₂CH₃

(Multiple Choice)

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Question 33

Deduce the identity of the compound from the data provided. C₅H₈O₄: IR (cm^-1): 2800-3300 (broad), 2950, 1740 ¹³C NMR (δ, splitting): 17.3 (q), 44.3 (s), 210.5 (s)

(Multiple Choice)

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Question 34

Determine the number of signals for 4-methyl-1-propylbenzene in the ¹H NMR spectrum.

(Multiple Choice)

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Question 35

Provide the structure that is consistent with the data below. C₅H₁₀O₂ IR (cm^-1): 2950, 1720 ¹H NMR (δ): 3.6 (s, 3H), 2.5 (septet, 1H), 0.9 (d, 6H) ¹³C NMR (δ): 190 (s), 55 (q), 40 (d), 16 (q)

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Question 36

________ is commonly used as an internal reference in NMR spectroscopy; its signal is assigned in ¹H and ¹³C NMR spectroscopy.

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Question 37

Deduce the identity of the compound from the data provided. C₁₀H₁₄O: IR (cm^-1): 3200-3500 (broad), 3050, 2950, 1610 ¹H NMR(δ): 1.0 (s, 6H), 2.0 (s, 3H), 2.8 (broad s, 1H), 7.3 (d, 2H), 7.6 (d, 2H)

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Question 38

Provide the structure that is consistent with the data below. C₅H₁₀O₂ IR (cm^-1): 3300-2800 (v. broad), 2950, 1710 ¹H NMR (δ): 12.0 (broad s, 1H), 0.9 (s, 9H) ¹³C NMR (δ): 220 (s), 45 (s), 12 (q)

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Question 39

What splitting pattern is observed in the proton NMR spectrum for the indicated hydrogens?

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Question 40

Showing 21 - 40 of 110

Exam 15: Nmr Spectroscopy

Give the structure of a compound that has a formula of C8H10O2 and has signals in the 13C NMR spectrum at 54.8 ppm (CH3), 63.3 ppm (CH2), 113.6 ppm (CH), 128.3 ppm (CH), 134.11 ppm (C), and 158.6 ppm (C).

Deduce the identity of the following compound from the spectral data given. C9H10O2: 13C NMR, δ 18.06 (quartet), 45.40 (doublet), 127.32 (doublet), 127.55 (doublet), 128.61 (doublet), 139.70 (singlet), 180.98 (singlet); IR, broad 3500-2800, 1708 cm-1

Which of the following protons gives an NMR signal with the highest chemical shift value (farthest downfield)? (CH3)2CH-O-CH2CH2CH3 1 2 3 4 5

Provide the structure that is consistent with the data below. C7H14O2 IR (cm-1): 2950, 1750 1H NMR (d): 2.3 (2H, q), 1.0 (3H, t), 0.9 (9H, s) 13C NMR (d): 185 (s), 78 (s), 29 (t), 14 (q), 12 (q)

What information does a COSY spectrum give?

What multiplicities are observed in the spin coupled 13C NMR spectrum of 2,3-dimethyl-2-butene?

Provide the structure that is consistent with the data below. C5H8Cl2 IR (cm-1): 2950 1H NMR (d): 1.4 (4H, t), 1.2 (4H, t) 13C NMR (d): 62 (s), 26 (t), 23 (t)

Give the structure of a compound that has a formula of C4H7ClO2 and has a triplet (3H, 1.1 ppm), quintet (2H, 1.2 ppm), triplet (1H, 4.4 ppm), and singlet (1H, 11.6 ppm)in the 1H NMR spectrum.

How many signals would you expect to see in the 1H NMR spectrum of the following compound?

Deduce the identity of the following compound from the 1H NMR data given. C4H7BrO: δ 2.2 (3H, singlet), 3.5 (2H, triplet), 4.5 (2H, triplet)

Provide the structure that is consistent with the data below. C5H10O IR (cm-1): 2950 1H NMR (d): 3.5 (4H, s), 0.9 (6H, s) 13C NMR (d): 64 (t), 41 (s), 12 (q)

How many signals would you expect to see in the 1H NMR spectrum of the following compound? CH3CH2CH2CH3

Deduce the identity of the compound from the data provided. C5H8O4: IR (cm-1): 2800-3300 (broad), 2950, 1740 13C NMR (δ, splitting): 17.3 (q), 44.3 (s), 210.5 (s)

Determine the number of signals for 4-methyl-1-propylbenzene in the 1H NMR spectrum.

Provide the structure that is consistent with the data below. C5H10O2 IR (cm-1): 2950, 1720 1H NMR (δ): 3.6 (s, 3H), 2.5 (septet, 1H), 0.9 (d, 6H) 13C NMR (δ): 190 (s), 55 (q), 40 (d), 16 (q)

________ is commonly used as an internal reference in NMR spectroscopy; its signal is assigned in 1H and 13C NMR spectroscopy.

Deduce the identity of the compound from the data provided. C10H14O: IR (cm-1): 3200-3500 (broad), 3050, 2950, 1610 1H NMR(δ): 1.0 (s, 6H), 2.0 (s, 3H), 2.8 (broad s, 1H), 7.3 (d, 2H), 7.6 (d, 2H)

Provide the structure that is consistent with the data below. C5H10O2 IR (cm-1): 3300-2800 (v. broad), 2950, 1710 1H NMR (δ): 12.0 (broad s, 1H), 0.9 (s, 9H) 13C NMR (δ): 220 (s), 45 (s), 12 (q)

What splitting pattern is observed in the proton NMR spectrum for the indicated hydrogens?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

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Reactions of Alkynes Introduction to Multistep Synthesis

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Substitution Reactions of Alkyl Halides

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Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

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Mass Spectrometry, Infrared Spectroscopy, and Uvvis Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

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Reactions at the Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

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Give the structure of a compound that has a formula of C₈H₁₀O₂ and has signals in the ¹³C NMR spectrum at 54.8 ppm (CH₃), 63.3 ppm (CH₂), 113.6 ppm (CH), 128.3 ppm (CH), 134.11 ppm (C), and 158.6 ppm (C).

Deduce the identity of the following compound from the spectral data given. C₉H₁₀O₂: ¹³C NMR, δ 18.06 (quartet), 45.40 (doublet), 127.32 (doublet), 127.55 (doublet), 128.61 (doublet), 139.70 (singlet), 180.98 (singlet); IR, broad 3500-2800, 1708 cm^-1

Which of the following protons gives an NMR signal with the highest chemical shift value (farthest downfield)? (CH₃)₂CH-O-CH₂CH₂CH₃ 1 2 3 4 5

Provide the structure that is consistent with the data below. C₇H₁₄O₂ IR (cm^-1): 2950, 1750 ¹H NMR (d): 2.3 (2H, q), 1.0 (3H, t), 0.9 (9H, s) ¹³C NMR (d): 185 (s), 78 (s), 29 (t), 14 (q), 12 (q)

What multiplicities are observed in the spin coupled ¹³C NMR spectrum of 2,3-dimethyl-2-butene?

Provide the structure that is consistent with the data below. C₅H₈Cl₂ IR (cm^-1): 2950 ¹H NMR (d): 1.4 (4H, t), 1.2 (4H, t) ¹³C NMR (d): 62 (s), 26 (t), 23 (t)

Give the structure of a compound that has a formula of C₄H₇ClO₂ and has a triplet (3H, 1.1 ppm), quintet (2H, 1.2 ppm), triplet (1H, 4.4 ppm), and singlet (1H, 11.6 ppm)in the ¹H NMR spectrum.

How many signals would you expect to see in the ¹H NMR spectrum of the following compound?

Deduce the identity of the following compound from the ¹H NMR data given. C₄H₇BrO: δ 2.2 (3H, singlet), 3.5 (2H, triplet), 4.5 (2H, triplet)

Provide the structure that is consistent with the data below. C₅H₁₀O IR (cm^-1): 2950 ¹H NMR (d): 3.5 (4H, s), 0.9 (6H, s) ¹³C NMR (d): 64 (t), 41 (s), 12 (q)

How many signals would you expect to see in the ¹H NMR spectrum of the following compound? CH₃CH₂CH₂CH₃

Deduce the identity of the compound from the data provided. C₅H₈O₄: IR (cm^-1): 2800-3300 (broad), 2950, 1740 ¹³C NMR (δ, splitting): 17.3 (q), 44.3 (s), 210.5 (s)

Determine the number of signals for 4-methyl-1-propylbenzene in the ¹H NMR spectrum.

Provide the structure that is consistent with the data below. C₅H₁₀O₂ IR (cm^-1): 2950, 1720 ¹H NMR (δ): 3.6 (s, 3H), 2.5 (septet, 1H), 0.9 (d, 6H) ¹³C NMR (δ): 190 (s), 55 (q), 40 (d), 16 (q)

________ is commonly used as an internal reference in NMR spectroscopy; its signal is assigned in ¹H and ¹³C NMR spectroscopy.

Deduce the identity of the compound from the data provided. C₁₀H₁₄O: IR (cm^-1): 3200-3500 (broad), 3050, 2950, 1610 ¹H NMR(δ): 1.0 (s, 6H), 2.0 (s, 3H), 2.8 (broad s, 1H), 7.3 (d, 2H), 7.6 (d, 2H)

Provide the structure that is consistent with the data below. C₅H₁₀O₂ IR (cm^-1): 3300-2800 (v. broad), 2950, 1710 ¹H NMR (δ): 12.0 (broad s, 1H), 0.9 (s, 9H) ¹³C NMR (δ): 220 (s), 45 (s), 12 (q)