Concept explainers
(a)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, the frequency range for the given type of bond is identified by the
Answer to Problem 15.41P
An OH stretch with stretching frequency
Explanation of Solution
The given reaction is
In the above reaction, the OH group, that is the alcohol functional group, is present in the reactant, and C=C bond of
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(b)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
A very broad OH stretch having stretching frequency
Explanation of Solution
The given reaction is
The
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(c)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
Two
Explanation of Solution
The given reaction is,
Two
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(d)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
The single N-H band having stretching frequency
Explanation of Solution
The given reaction is
The single N-H band having stretching frequency
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(e)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
The
Explanation of Solution
The given reaction is
The epoxide having ether functional group would disappear from the reactant, and an OH band having stretching frequency
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(f)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
The
Explanation of Solution
The given reaction is
In the above reaction, the
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(g)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
The
Explanation of Solution
The given reaction is
The
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(h)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
The strong
Explanation of Solution
The given reaction is
The strong
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
(i)
Interpretation:
The differences in the IR spectra of the reactant and product that would enable you to tell that the given reaction has taken place are to be determined.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, frequency range for the given type of bond is identified by the functional group to which that bond resembles in the molecule.
Answer to Problem 15.41P
The
Explanation of Solution
The given reaction is
The reactant is conjugated ketone in the above reaction. The alcohol and alkene functional groups are present in the product. The
The differences in the IR spectra that would enable to tell that the given reaction has taken place are determined on the basis of bonds and the functional groups present in the reactant and the product.
Want to see more full solutions like this?
Chapter 15 Solutions
Organic Chemistry: Principles And Mechanisms: Study Guide/solutions Manual (second)
- How can you distinguish between aldehydes and ketones based on Infra-red spectroscopy?arrow_forwardDetermine which of the following belongs to this ir spectra then complete the nmr analysis methyl butanoate benzaldehyde 1-chlorobutane 1-chloro-2-methylpropane butan-2-one propan-2-ol propanalarrow_forward9) What would be the difference between the 4 alcohols in IR? They all show O-H, C-H sp3, and C-H aromatic bonds. The only way to tell which one is used would be by comparing the fingerprint regions to published IR spectra of each alcohol. Alcohol 2 has an aldehyde C-H group that could be seen between 2700-2800 and 2800-2900 cm-1 Only alcohol 3 will show O-H bond around 3300 cm-1 Only alcohol 1 will show C=C aromatic bonds around 1600 cm-1 10) Assuming 5.0 mL of alcohol 2 was used and 2.2 g of the product was isolated, what is the percent yield for this reaction? The product has a molar mass of 198.00 g/mol. 11) How could the percent yield be increased for this reaction? Add NaOH to neutralize the product as it forms Add a catalyst such as H2SO4 to help speed up the reaction Add a catalyst such as HCl to help speed up the reaction Cool the reaction on ice to increase the rate of reaction 12) Is there another way that the product of this reaction…arrow_forward
- Assign each peak on the following spectrum.arrow_forwardIf there is a weak broad peak in the alcohol region of an IR spectra does that mean there is little yeild of alcohol? or a small amount of alcohol?arrow_forwardWhy is it important for solutions to be diluted before they are run through spectroscopy?arrow_forward
- Pair each of the following four compounds with the appropriate IR spectrum.arrow_forwardCan you help me figure out what I did wrong here? I am not sure if it is a formating error or not.arrow_forwardA compound's IR spectrum is given below. (a) Indicate the presence of at least 4 bonds/functional groups based on the IR spectrum. For each bond/functional group, either mark its peak on the spectrum or give the frequency of the peak in the spectrum. (b) Indicate the absence of at least 3 bonds/functional groups based on the IR spectrum. For each bond/functional group, either mark where its peak on the spectrum should appear (but doesn't) or give the frequency range where you would expect it to appear. (c) What is the structure of the compound? The molecular formula is C7H6N2. (d) Explain how you determined the structure of the compound.arrow_forward
- A compound's IR spectrum is given below. (a) Indicate the presence of at least 4 bonds/functional groups based on the IR spectrum. For each bond/functional group, either mark its peak on the spectrum or give the frequency of the peak in the spectrum. (b) Indicate the absence of at least 3 bonds/functional groups based on the IR spectrum. For each bond/functional group, either mark where its peak on the spectrum should appear (but doesn't) or give the frequency range where you would expect it to appear. (c) What is the structure of the compound? The molecular formula is C7H6N2. (d) Explain how you determined the structure of the compound. *There's no more additional informations for this problem*arrow_forwardPlease give me the right answerarrow_forwardQ8. How would you distinguish the following molecules using IR and Mass Spectrometry? Please label at least two differences for IR and two for MS. Please draw the mechanism for the formation of fragments which can distinguish the two molecules via mass spectrometry. HOarrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning