What type of compound is most consistent with the IR spectrum shown below? LOD my 80 D 9000 carboxylic acid alcohol ketone None of the choices are correct. alkyne nitrile (i.e., RCN) O aldehyde 2000 JBOO LOOD E00
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- Label all relevant peaks that are above the fingerprint region (>1500 cm-1) in all the IR spectra given below with the functional group that those peaks are representative of (make sure not to forget the aldehyde C–H bonds, which many IR charts do not list). Based on the table you completed with predicted Diagnostic IR peaks for each compound, and based on the IR spectra you had labeled, match each compound with its spectrum.What functional groups are present in the IR spectra below. Functional Group cm-1 O-H 3600-3200 N-H 3500-3200 Csp-H 3300 Csp2-H 3150-3000 Csp3-H 2937 O=C-H 1740-1720 C=O 1693 C=C (aromatic) 1650Predict the structure of the compound using the information below. Kindly show what information are obtained for each spectra which may help in predicting the structure. From IR Spectra: See the attached picture From Mass Spectra M+ = 134 base peak = 105 peaks at 77 and 51 From Proton and Carbon NMR Spectra See attached picture.
- 1. Write the IR spectra to the corresponding structures below and cite the applicable peaks A. Ethyl acetate B. Cyclohexanone C. Propionic acidwhich IR stretches and bends indicate what type of functional group we have (alcohol, carboxylic acid, ester), 2. how you can then use IR to monitor the change from the starting materials to the products. 3. indicate and discussion the absorptions that are relevant to alcohol OH and C-O, carboxylic acid OH, carboxylic acid C=O, ester C=O, and C-O). the picture below is an ir spectra of carboxylic acidWhat is the filled out IR spectra for nitro methyl benzoate? Label the peaks associated with nitro methyl benzoate.
- A. Below is a “Name Reaction” - Clemensen reduction. Describe how the IR spectrum could be used to tell if the reactions had been successful. Provide approximate wave numbers and the corresponding functional groups for the key absorption bands and/or peaks in IR. You might want to describe from two aspects: which peak(s) of what functional group(s) should appear in the IR of the product (that is different from the reactant); which peak(s) of what functional group(s) should disappear in the IR of the product (that is present in the reactant B. For the Clemensen reduction (same reaction), describe how the 1H NMR spectrum could be used to tell if the reactions had been successful. Provide approximate chemical shifts and the integral and the “splitting” of the “unique” in the NMR spectrum. You might want to describe from two aspects: which peak(s) should have a change in chemical shift(s); which peak(s) should have a change in integral; which has a splitting change; which peak(s) will be…An unknown compound (x) contains only carbon and hydrogen, has MW=112 and exhibits the spectral data below. In addition to the IR signal listed below, there are only peaks corresponding to C-H stretches (between 3300 and 2900) and several in the "fingerprint region". IR (cm-1) 2145 CNMR (ppm) 77.8, 70.1, 30.2 H NMR (ppm) 2.45 (singlet)This is the 13C spectrum for an X compound with molecular formula C7H12O4. The substance is not soluble in NaHCO3 and has a stretch at 1740cm-1 on the IR spectrum. What is the structure of X?
- 9) 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…Based on this portion of an IR spectra is there a ketone that is present?6 I have to answer the following questions relating to the attached HNMR spectrum. a. Match the hydrogens in dibenzalacetone to the signals in the spectrum. b. Does this sample also contain any benzaldehyde? c. Does this sample also contain any other impurities?