Exp2_IR_WS

True or False 1. A molecule that is "IR inactive" means that it does not produce any signal due to no vibration. 2. Infrared spectroscopic data is reported in wavenumber (cm-1) against absorbance because they have a linear relationship. 3. The signals observed from a molecule of chloropropane will have a higher wavenumber than iodopropane. 4. The signals observed from the C-C bond in an alkene will report at a higher wavenumber than the C-C bond in an alkyne.

Each spectrum corresponds to only one compound. Fill in the table based on the information from the spectrum. Choose and write/draw the structure that conforms to the information. Draw at least 2 possible fragments. show the steps on how you came up with the answer.

Using this IR and HNMR Identify the unknown (unknowns will contain at most one of a double bond, a halogen, or an alcohol). Also, give a detailed explanation on how these spectras correspond to the identified unknown.

5. Suppose that the CH3 group connected to the nitrogen in methamphetamine were instead a CH2CH3 group. Briefly describe how the spectrum would change, including the number of signals, the splitting patterns, and integration. Ignore everything that's the same, I'm just looking for the differences. CH2: CH3: 6. Consider the structure of the drug Adderall, shown to the right. Briefly, what differences would you see in the spectrum of Adderall versus the spectrum of methamphetamine? NH3 Part 2: Mechanisms

Transmitance 1.2 1.0 0.8 0.6 0.4 0.2 0.0 3500 3000 2500 2000 1500 1000 500 Wavenumbers (cm-1)

Refer to image, answer clearly and explain. Label the graph, draw the structure and I will rate!

Explanation/Answer cannot be hand-drawn! Must be typed or illustrated digitally   Analyze IR data: Identify peaks in the IR spectrum and identify their corresponding functional groups within the sample molecule. The molecules identity is given with the IR data. Analyze H NMR: Identify which hydrogens the peaks resemble. Identify their location in the molecule along with their shift, splitting, and integral. The molecules identity is given with the H NMR.

These are IR spectra images that were taken in our lab (first is benzoic acid). Explain the IR peaks corresponding to the functional groups for both products.

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Please step by step answer and current answer please

Help with this please

7. Determine the structure of the molecule that has the molecular formula C11H140 and the following IR and 'H NMR spectra. Show your work. L00 1604 3030 2963 1713 1465 4000 2000 1000 são NAVENUMBERIl singlet 2H multiplet triplet 5H 3H triplet 2H multiplet 2H 11 10 8 7 4 3 2 1 ppm HSP-01-734 structure

How do I interpret, label, and determine which molecule this H NMR graph represents?  The three molecule choices are methylene cyclohexane, 3-methylcyclohexene, or 1-methylcyclohexene. (the two pictures of the H NMR graph is from the same graph)

Look at the structure of ethyl acetate in your notebook. In which region of the 13C spectrum of ethyl acetate would you NOT expect any peaks?     a.0 - 50 ppm b.50 - 100 ppm c.100 - 160 ppm d.160 - 220 ppm

2) On spectra 2 are the mass, IR and 13 C and 1 H NMRspectra of an organic compound.a) From these spectra, determine the structure of the molecule. Rememberto ignore the triad in the 13 C NMR spectrum at 7 ppm that comes from theNMR solvent. b) Draw the structure of the molecule and label each hydrogen with a letter(A, B, C...). Then fill in the peak assignment table below.  hydrogen chemical shift integration splitting pattern couples to

answer with explanation

What if the functional group and wave number for each functional group In the IR SPECTRUM attached below . The Unkonwn is C8H8O2

A3.

I need to analyze the Ir spectrum and circle the frequency identify  the groups and appearance strong board and weak on the spectrum graph  I also need to draw a structure and match the peaks with its protons on the spectrum  please circle peaks on the graph so I can know where they are, please

Match the four structures with the four IR spectra (by putting a proper letter in the box to the right of each spectrum). Use specific IR absorptions for various functional groups to identify the structures. Circle the important peaks in each spectrum that helped you identify the functional group(s) and label the functional group beside it.

Match the four structures with the four IR spectra (by putting a proper letter in the box to the right of each spectrum). Use specific IR absorptions for various functional groups to identify the structures. Circle the important peaks in each spectrum that helped you identify the functional group(s) and label the functional group beside it.

The DEPT-90 spectrum exhibits 6 in the 0-50 ppm region The DEPT-135 spectrum exhibits x 100 ppm region that is a positive ▾ C6 signal(s) for the CH groups: ▼ 1,2,6 ✓ in the sp2 hybridized region 100-150 C3 and C4 ▼ signal(s) (only the quaternary carbon atoms, signal(s), indicating the presence of a methylene group (CH₂) attached to an oxygen atom, are missing); there is C5 ▼ C1 and C2 ▼ and signal(s) in the 50-

What functional groups exist and are missing in this IR spectrum?

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Answer choices for first blank:  a. ketone b.aldehyde c.amide d. aromatic ring  Answer choices for second blank: a. 3700 b. 2200 c. 1725

Use this IR to determine the functional groups in the compound and clearly explain which one it could be and WHY ? PLEASE provide explenation and details to support your reasoning • 4-Chlorophenol • 4-methoxyphenol • 4-ethoxyphenol • 4-tert-butylphenol