A compound whose molecular formula is C3H30 has the IR spectrum shown. Suggest a reasonable structure for this compound. 100- 80- 60- 40- * 20- 0수 4500 4000 3500 3000 2500 2000 1500 1000 500 Wavenumbers (cm-1) % Transmittance
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- What functional group is most likely present if a compound shows IR absorption at these frequencies? Q.) 2950 cm-1Which of the following IR absorbances do not correspons with the functional group in butanal? 2720 cm-1 3300 cm-1 1725 cm-1 2820 cm-11. Deduce a possible structure for the compound with the IR absorptions below. (a) C5H8O: 2950, 1750 cm-1 (b) C4H8O: 2950, 2820, 2715, 1715 cm-1 2. How could IR spectroscopy be used to distinguish between the following pair of compounds? (a) CH2=CHCH2CH(CH3)2 and CH3CH2CH2CH(CH3)2 (b) CH3OCH2CH3 and CH3CH2CH2OH 4. How does the O-H stretch in the IR spectrum of a carboxylic acid differ from the O-H stretch of an alcohol?
- Complete the following answer using the data provided here: Molecular formula: C4H8O2 Important IR data (cm-1): 3280 (broad); 2980-2730 (many); 1690; 1254 All 1H NMR data (ppm, splitting, integration): 11.0 ppm (s), 1; 2.57 ppm (m), 1; 1.07 ppm (d), 6 1. Sketch out a 1H NMR spectrum showing peak locations and peak splitting on a ppm scale for the data provided above. Include the data labels above in your spectrum, but do not show integration lines. 2. draw the most proper line bond structure for the data given aboveidentify the structure of molecular formula c9h10o with IR peak at 1688 Hnmr data ppm at 1.22(triplet,3H),2.98(quartet 2H) and 7.28-7.95(multiplet,5H)Propose a structure consistent with each set of data.a.) C9H10O2: IR absorption at 1718 cm−1 b.) C9H12: IR absorption at 2850–3150 cm−1
- For a mono-substituted phenyl ring, which of the following absorbances would one expect to observe? Group of answer choices 880-900 730-770, 690-710 3000-3100 735-7702. Use the spectroscopic data provided below to answer the questions.a. Determine the structure of C5H8O from the IR and NMR data given.IR: 3023 cm-1, 1685 cm-1, 1619 cm-1. 13C-NMR: 7.9 ppm, 32.9 ppm, 127.7 ppm, 136.5 ppm, 201.1 ppm1H-NMR: 1.1 ppm (t, 3H), 2.6 ppm (q, 2H), 5.8 ppm (d, 1H), 6.23 ppm (d, 1H), 6.34 (t, 1H)b. Identify all of the Lewis acid sites and the Lewis base sites on your molecule.What are the functional groups and peaks of this C10H22 IR Spectra?
- Propose a structure consistent with each set of data. C8H10 : IR absorptions at 3108–2875, 1606, and 1496 cm−1Calculate the IHD of C7H6XNO 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.compound with the molecular formula C7H9N exhibits IR bands at 3450 cm-1 (medium, doublet), and 855 cm-1 (strong) and shows the following major mass spectral signals (m/z): 106 (base); 107 (M+, about 70% of base), 91 (40% of base), and 77 (about 20% of base). Deduce a reasonable structure from this data.