Question 1

What type of NMR spectrum is the following?

Accepted Answer

A) broadband decoupled 
B) DEPT-90 
C) DEPT-135 
D) It is not possible to judge given just the spectrum. 
A) broadband decoupled 
B) DEPT-90 
C) DEPT-135 
D) It is not possible to judge given just the spectrum.

Question 2

Exhibit 13-8
Below are three isomeric chlorobutanes and their S1U1P113S1S1P0C NMR spectral data.MATCH the spectral data to the correct structures by placing the letter of the spectrum in the blank to the left of the corresponding structure.
-_____

Accepted Answer

A) a = δ,55.4,36.2,19.3 
B) b = δ,56.2,35.3 
C) c = δ,56.0,36.0,24.2,8.2 
A) a = δ,55.4,36.2,19.3 
B) b = δ,56.2,35.3 
C) c = δ,56.0,36.0,24.2,8.2

Question 3

Exhibit 13-12
Answer the question(s) for the compound whose S1U1P11S1S1P0H NMR spectra is shown below.
CS1U1B18S1U1B0HS1U1B17S1U1B0ClO   Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
-Refer to Exhibit 13-12.Propose a structure for this compound.

Accepted Answer

4-chloroac

Question 4

Exhibit 13-10
Answer the question(s) for the compound whose S1U1P11S1S1P0H NMR spectra is shown below.
CS1U1B14S1U1B0HS1U1B18S1U1B0O   Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
-Refer to Exhibit 13-10.Describe each signal in terms of its integration,splitting and chemical shift.

Accepted Answer

The signals at 1.05 and 2.45 δ are chara

Question 5

Which signal(s) remain(s) when a DEPT-90 spectrum is run?

Accepted Answer

A) CH3 
B) CH2 
C) CH 
D) quaternary C 
E) a,b,c 
A) CH3 
B) CH2 
C) CH 
D) quaternary C 
E) a,b,c

Question 6

Exhibit 13-12
Answer the question(s) for the compound whose S1U1P11S1S1P0H NMR spectra is shown below.
CS1U1B18S1U1B0HS1U1B17S1U1B0ClO   Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
-Refer to Exhibit 13-12.Describe the signals that occur between 7 and 8 δ in terms of integration,splitting and chemical shift.

Accepted Answer

The chemical shift of the signals betwee

Exam 13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

What type of NMR spectrum is the following?

Exhibit 13-8 Below are three isomeric chlorobutanes and their 13C NMR spectral data.MATCH the spectral data to the correct structures by placing the letter of the spectrum in the blank to the left of the corresponding structure. -_____

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.Propose a structure for this compound.

Exhibit 13-10 Answer the question(s) for the compound whose 1H NMR spectra is shown below. C4H8O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-10.Describe each signal in terms of its integration,splitting and chemical shift.

Which signal(s) remain(s) when a DEPT-90 spectrum is run?

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 signals that occur between 7 and 8 δ in terms of integration,splitting and chemical shift.

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 13-8 Below are three isomeric chlorobutanes and their ¹³C NMR spectral data.MATCH the spectral data to the correct structures by placing the letter of the spectrum in the blank to the left of the corresponding structure. -_____

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.Propose a structure for this compound.

Exhibit 13-10 Answer the question(s) for the compound whose ¹H NMR spectra is shown below. C₄H₈O Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/ -Refer to Exhibit 13-10.Describe each signal in terms of its integration,splitting and chemical shift.

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 signals that occur between 7 and 8 δ in terms of integration,splitting and chemical shift.