High School
SAT
ACT
University
MCAT
LSAT
DAT

Spectroscopy

Related Topics

Wize University Chemistry Textbook > Structure Elucidation (IR Spectroscopy, NMR, Mass Spectrometry)

13C NMR

6 Activities

Wize University Chemistry Textbook > Structure Elucidation (IR Spectroscopy, NMR, Mass Spectrometry)

1H NMR

6 Activities

Wize University Chemistry Textbook > Structure Elucidation (IR Spectroscopy, NMR, Mass Spectrometry)

Infrared Spectroscopy

11 Activities

Analyze the spectroscopic data to properly identify the unknown molecules.

Match the following spectra with the corresponding molecules.
A.
B.
C.
D.
1H NMR : δ/ppm 3.3 (s, 3H), 3.7 (s, 2H)
13C NMR : δ/ppm 59.0, 71.9
IR : 1110 cm-1
1H NMR : δ/ppm 1.2 (t, 3H), 2.9 (q, 2H)
13C-NMR: δ/ppm 10, 41, 175
IR : 1792 cm-1
1H NMR : δ/ppm 1.0 (t, 3 H), 1.6 (sextet, 2 H), 2.0 (s, 3 H), 4.1 (t, 2 H).
13C-NMR: δ/ppm 10.4, 20.9, 22.1, 66.1, 171
IR = 1745 cm-1
1H NMR : δ/ppm 1.0 ppm (triplet, 3 H), 1.5 ppm (sextet, 2 H), 3.4 ppm (triplet, 2 H).
More 13C NMR Questions:
The 13C NMR spectrum belongs belongs to which of the four molecules?
Assign the 1H and 13C NMR spectra of the following molecule:
How many different 1H and 13C NMR signals would you expect for the following molecules? Include the expected multiplicity and relative integration for the signals in the 1H NMR spectrum
(Duplicated)
The 13C NMR spectrum belongs belongs to which of the four molecules?
The 13C NMR spectrum belongs belongs to which of the four molecules?
Lab techniques: 13C NMR
The 13C NMR spectrum provided belongs to which of the following molecules?
Lab techniques: 13C NMR
The 13C NMR spectrum provided belongs to which of the following molecules?
Example: 13C NMR 1
Example: 13C NMR
Assign the 13C NMR spectrum for 3-methyl-butane-2-one.
How many different 1H and 13C NMR signals would you expect for the following compounds? Include the expected multiplicity and relative integration for the signals in the 1H NMR spectrum
Example: 13C NMR 1

How many signals would you expect in the 13C NMR spectra of the following compound?
NMR
How many different 1H and 13C NMR signals would you expect for the following compounds? Include the expected multiplicity and relative integration for the signals in the 1H NMR spectrum
Assign the 1H and 13C NMR spectra of the following compound:
Example: 13C NMR 3

Example: 13C NMR 2

The 13C NMR spectrum belongs belongs to which of the four compounds?
(Duplicated)
The 13C NMR spectrum belongs belongs to which of the four compounds?
The 13C NMR spectrum belongs belongs to which of the four compounds?
13C NMR
In the following 13C NMR spectrum, what is the peak at 208 ppm representing? The compound being analyzed is acetone.
More 1H NMR Questions:
(Duplicated) (Duplicated)
The 1H NMR spectrum belongs belongs to which of the four molecules?
Assign the 1H and 13C NMR spectra of the following molecule:
How many different 1H and 13C NMR signals would you expect for the following molecules? Include the expected multiplicity and relative integration for the signals in the 1H NMR spectrum
The 1H NMR spectrum belongs belongs to which of the four molecules?
(Duplicated)
The 1H NMR spectrum belongs belongs to which of the four molecules?
Lab techniques: 1H NMR
The 1H NMR spectrum provided belongs to which of the following molecules?
Lab techniques: 1H NMR
The 1H NMR spectrum provided belongs to which of the following molecules?
Lab techniques: 1H NMR
The 1H NMR spectrum belongs to which of the following molecules?
How many different 1H and 13C NMR signals would you expect for the following compounds? Include the expected multiplicity and relative integration for the signals in the 1H NMR spectrum
Which of the indicated protons will be the most deshielded in an 1H-NMR spectrum?
Proton NMR
Which of the indicated protons will be the most deshielded in an 1H-NMR spectrum?
NMR
How many different 1H and 13C NMR signals would you expect for the following compounds? Include the expected multiplicity and relative integration for the signals in the 1H NMR spectrum
Assign the 1H and 13C NMR spectra of the following compound:
Practice Question: 1H NMR 3

Practice Question: 1H NMR 1

Practice Question: 1H NMR 2

(Duplicated) (Duplicated)
The 1H NMR spectrum belongs belongs to which of the four compounds?
The 1H NMR spectrum belongs belongs to which of the four compounds?
(Duplicated)
The 1H NMR spectrum belongs belongs to which of the four compounds?
How many different signals would you see in the 1H NMR spectrum of the following compound?
1H NMR
A triplet peak in 1H NMR spectra tells us what information?
IR Spectroscopy, NMR and Mass spectrometry
From the spectra provided, identify the structure of the unknown molecule.
MS:
IR:
More Infrared Spectroscopy Questions:
IR Spectroscopy: Structure Elucidation
Prallethrin, a potent insect repellent used for the control of mosquitos, features a number of organic functional groups. Which key peaks would you use IR spectroscopy to detect?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
IR Spectroscopy: Structure Elucidation
Prallethrin, a potent insect repellent used for the control of mosquitos, features a number of organic functional groups. Which key peaks would you use IR spectroscopy to detect?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
Lab techniques: IR Spectroscopy
Which molecule does the IR spectrum belong to?
Lab techniques: IR Spectroscopy
Which molecule does the IR spectrum belong to?
IR Spectroscopy and Structure Determination
Propose the structure of a compound that can produce the following IR spectrum:
IR and dipole moment
How do you distinguish between these two molecules using IR?
IR Spectroscopy
How do you differentiate between the following two molecules by IR?
Structure Determination using IR spectrum
A molecule with molecular formula C4H8O2 has the following IR spectrum. What is the possible structure of the compound?
IR spectroscopy
What is the best option to distinguish between the following two molecules by IR?
IR Question
Which statements are true about the IR spectrum of the following molecule?
IR Spectroscopy
Which molecule fits the best with the IR spectrum provided?
IR Spectrum
Assign all the functional groups for the characteristic peaks in this IR spectrum:
IR, resonance and bond polarity
Match the following C=O stretching frequency values with the right compounds in the picture:
1720 cm-1, 1810 cm-1, 1640 cm-1.
Identifying the Functional Groups using IR Spectrum
Match the following compounds with the proper IR spectra provided below:
I.
II.
The IR spectrum below belongs to which compound?
IR Spectroscopy: Structure Elucidation
Prallethrin, a potent insect repellent used for the control of mosquitos, features a number of organic functional groups. Which key peaks would you use IR spectroscopy to detect?
The IR spectrum below belongs to which compound?
Practice: IR Spectroscopy
Which molecule does the IR spectra belong to?
Practice: IR Spectroscopy
Which molecule does the IR spectra belong to?
The IR spectrum below belongs to which compound?
Hints in structure from IR
Try to identify the functional groups in this IR Spectrum.
Once you do that, propose a structure using the molecular formula: C2H6O
Is there only one isomer (configuration) of this molecule based on the IR spectrum and the formula?
IR Spectroscopy: Structure Elucidation
Prallethrin, a potent insect repellent used for the control of mosquitos, features a number of organic functional groups. Which key peaks would you use IR spectroscopy to detect?
IR functional group assignment
Practice: IR Spectra
Identify all the functional groups in the following IR Spectrum:
IR Spectroscopy, NMR and Mass spectrometry
From the spectra provided, identify the structure of the unknown molecule.
MS:
IR: