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- An unknown organic compound is isolated. The compound produces a molecular ion at m/z = 101. There is no significant M+2 peak. The IR spectrum shows peaks ~2950 cm'. It does not have any peaks above 3000, nor around 1600-1800 or 1050 cm1. The 'H-NMR and 13C-NMR spectra are shown below. What is the name of this compound (IUPAC and common name are both acceptable)? 3H 2H PPM 20 10 30 PPM 50 40How many unique c's can be seen on 13C NMR and how would the peaks be assigned? Product is 4-acetylbiphenyl and solvent is CDCl3Q11 Deduce the structure of the compound whose molecular formula is ₁1H₁40₂ from the 't nur spectrum shown below. Other useful information: IR spectrum 1710 cm (strong). shows peaks at 3,000-2500 cm (broad) and Run at 250 MHz 10 SOLVENT CCL Offse: 300 Hz 9 C₁₁ H₁0₂
- One way to determine the number of acidic hydrogens in a molecule is to treat the compound with NaOD in D2O, isolate the product, and determine its molecular weight by mass spectrometry. For example, if cyclohexanone is treated with NaOD in D2O, the product has MW = 102. Explain how this method works.Acidcatalyzed dehydration of 3hydroxy3phenylcyclohexanone leads to an unsaturated ketone. What possible structures are there for the product? At what position in the ER spectrum would you expect each to absorb? If the actual product has an absorption at 1670 cm-1, what is its structure?The proton NMR spectrum for a compound with formula C10H12O2 is shown below. The infrared spectrum has a strong band at 1711 cm-1. The broadband-decoupled 13C NMR spectral results are tabulated along with the DEPT135 and DEPT90 information. Draw the structure of this compound.
- Draw the structure of the amine that produced the 1H NMR spectrum shown in Problem 24-66(c). This compound has a single strong peak in its IR spectrum at 3280 cm-1.When the 1HNMR spectrum of an alcohol is run in dimethylsulfoxide (DMSO) solvent rather than in chloroform, exchange of the Ο-H proton is slow and spin-spin splitting is seen between the Ο-H proton and C-H protons on the adjacent carbon. What spin multiplicities would you expect for the hydroxyl protons in the following alcohols? (a) 2-Methyl-2-propanol (b) Cyclohexanol (c) Ethanol (d) 2-Propanol (e) Cholesterol (f) 1-MethylcyclohexanolAt what position would you expect to observe IR absorptions following molecules?
- Which compounds (A-F) match with the corresponding IR spectrums (1-2)?An unknown compound with formula C, H, O₂ gives the IR spectrum shown below and has an M peak at m/z 128 in its mass spectrum. Answer the questions that follow to identify the compound. 100 you VW 2000 1500 Wavenumber (cm-¹) 50 4000 Part 1 of 4 What is the molecular formula of the compound? C₂H120₂ Part: 1 / 4 3000 Part 2 of 4 1000 X Try again 500 What is the index of hydrogen deficiency or degree of unsaturation of the compound? 7 8民网图 ArIn a DEPT-135 spectrum, which labeled carbons in the molecules below would show positive and which would show negative peaks? a) b) d H3C. C a CH3 CH3 a CH3 CH3 Positive peaks: Positive peaks: ■ Negative peaks: Negative peaks: