Chapter 12 IR Bonus Homework Answers

13. Use the chemical formula and the 1H NMR spectrum to determine the structure of the molecule. You must show your work (Le draw fragments)| 20 + 2 - H- X + N degrees of unsaturation C4H7CIO 2 The 13C NMR contains a signal at 205 ppm. | = 3 singlet | = 2 triplet |= 2 triplet 3 8 (ppm) final answer

Fully annotate ms. Using specific pieces of data from the spectra please discuss how you determined the identity of the terpene unknown. Your answer should be 1-2 paragraphs.

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orgo chem II nmr  please help me fill out this chart!

Please send me the question in 20 minutes it's very urgent plz

Determine the structure from the FTIR and mass spectrum. The proton NMR has a singlet with an integration of 6 hydrogens at 2.6 ppm, a triplet with an integration of 1 hydrogen at 7.41 ppm, and a doublet with an integration of 3 hydrogens at 7.25 ppm.

Can I please have help with this?

can you please analyze this spectra (FTIR) for 2-phenylpropan-2-ol thank you.

Examine the IR spectrum in Photo 1. Record the wavenumber for each relevant peak in Data Table 1. Record the bond represented by each relevant peak. Identify the functional groups associated with each bond and record it. Circle the structure(s) on Photo 2 that match the data.

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I need help interpreting these 3 spectra, h-nmr,c-nmr, IR. All three correlate to same molecular structure. The question asks you to determine the molecular structure and label all peaks on all 3 spectra.

Draw the correct structure based on these 3 spectra. Show each step and througly explain, how you are assembling the structure.

benzoin Mass Spec Please label and explain

10-What type of functional group in the following Ir spectra? Assign the signal for every functional group Absorbance / % 100- 4000 www 3000 2500 2000 1500 1000

3. A molecule with three types of atoms has the mass spectrum shown below. The molecular ion peak has an intensity of 23 and the (M+1)* peak has an intensity of 1.3. What is the molecular formula for this compound? 100- |72 80- 44 60- 40- 2어 20 30 40 50 m/z 10 60 70 80 90 Relative Intensity

Answer the graph below

From the MS data shown below, identify the unknown organic molecule. Indicate any partial structures that you are able to deduce from these spectra and explain how you identify these.

3. The EI spectrum of ethyl 2-methylbenzoate is given below. Assign structures to all of the labeled species and rationalize their formation. 100 Ethyl 2-methylbenzoate El MW = 164 119 CH3 80 60 118 164 91 40 135 20니 0 tm 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 m/z Intensity

Complete the table below, and provide a structure of a compound that is consistent with the molecular formula C7H12O2 and the following 13C DEPT data. Please show your work. Also, place emphasis on the meaning of the "no peak no peak" data

Please help answering all parts of the following question...thank you! From the following sets of data, please propose a reasonable structure for the unknown organic compound. This molecule is entirely composed of C, H, and N only. Please show all of your work and feel free to write on the spectra any clues as to the structure.

( asap within 10 min plzz ...with explanation plzz dont answer after 10.45 pm

Briefly explain in 1-2 sentences if the following reaction was successful or not from the provided IR spectrum. Give specific values and associated functional groups to support your claim, use values within the 3600-1500 cm¹¹ range. 100 %T 80 60 40 20 2000 3000 1. NaBH4/EtOH 2. H3O+ 2000 1500 Wavenumber[cm-11 OH mm 1000 500 400

a. Calculate the molecular formula of the unknown using mass spectrum and peak data provided to you. b. Draw various possible structural formulas (isomers) using the information from the step above and the IR spectrum

(b) One possible alkene product is shown in the reaction above. Draw the other alkene product that could form from a modified Wittig, the Horner-Emmons reaction (p387). (c) What was your aldehyde starting material? (What is "R"?) 1

Consider the spectra below of an unknown compound. 100 80 21% abundance 1.2% abundance 60 40 86 20 0.0- 15 30 45 60 75 90 m/z INFRARED SPECTRUM 0.0 0.4- 02 3000 2000 1000 Wavenumber (cm 1) Relative Tranamitance Rel. Intensity

The mass spectra of 1-methoxybutane, 2-methoxybutane, and 2-methoxy-2-methylpropane are shown below. Match each compound with its spectrum.

4. Draw a possible molecule for each formula. based on Formula 1 5. Which structure do you think is correct? based on Formula 2 based on Formula 3

The way a molecule fragments in a mass spectrometer depends upon OA. all of the them B. the stability of the fragments C. the structure of the molecule O D. OE. the energy of the electron beam hitting the molecule the bond strengths

Hi can you help me analyze the NMR and IR data and justify the presence of the product.  Thank you very much.

How could spectroscopy be used to support that the below reaction occurred? Choose all that apply. H₂C CH excess HCI H₂C. CI CI CH3 Choose one or more: OUV-vis will not be useful because no change in Amax would occur. O Use UV-vis; the product would not show an absorbance in the spectrum range due to a shorter Amax from that of the starting material O Use UV-vis; the product would show an absorbance at a longer Amax from that of the starting material. O IR will not be useful as no detectable change in the spectrum will occur. O Use IR; the product has a sharp narrow peak at 3300 cm-¹, but the starting material does not. O Use IR; the starting material has a sharp narrow peak at 3300 cm-1, but the product does not. O Use IR; the product has a strong broad peak at 2200 cm-¹, but the starting material does not.

Chemistry

Identify the following in the given IR Mass spectrum. Compound 1 Mass Spectroscopy: Interpretation of peaks: Compound 1 Mass Spectroscopy: MASS SPECTRUM 100 80 60 40 20 0.0- 10 20 30 40 50 60 70 m/z Interpretation of peaks: Rel. Intensity

I really appreciate it if the answer is typewritten but it's still ok if it's handwritten but i hope the writings are clear thank youuuu

ORGO II NMR  please help fill out the chart and label. my unknown is C6H10O.

Calculate the IHD and identify the important peaks in the following MS spectral data and draw the structure of the important peaks in the following MS spectral data.