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- Q-2. How you can differentiate between 1,1-dibromoethane and 1,2- dibromoethane using 'H-NMR spectra? Q-3. Look at the following aromatic compound and answer the following questions: H1 ON „NO2 H2 H3 a) How many different 'H-NMR signals are expected? b) Beside each Hydrogen, write the expected splitting (multiplicity) of the signal. c) Give one example for meta-coupling from the structure.Q-2. Look at the following "C-NMR spectrum (Lower) and two DEPT spectra (C,H,CI): 131 ppm 140 130 120 110 100 90 80 70 60 s0 40 30 20 10 ppm Label all the signals as CH,, CH,. CH or C. Put you labels in the lower spectrum. i) ii) Draw one possible structure for the compound.Please do H-NMR for the molecule below
- How many ¹H peaks can occur in the ¹H NMR spectrum of the following organic compound? cl cl cl-c-c-cl | | cl clThe two isomeric carboxylic acids that give the following NMR spectra both have the formula C3H5ClO2. What is the name of the two carboxylic acids.What am I doing wrong please? Help please Thanks Question for the image A 1H NMR spectrum is shown for a molecular formula C9H10O2. Draw the structure that best fits the data.
- Q-3. Look at the following C-NMR spectrum (Lower) and two DEPT spectra (C1,H12O): 200 160 120 80 40 i) Label all the signals as CH3, CH,, CH or C. Put you labels in the lower spectrum. ii) Draw one possible structure of the compound.Match each 'H NMR spectrum (#1-4) to the appropriate compound (A-F). A (CH3)3CNO2 CH;CH,NO2 (CH3),CHBr CH;CH,CH,NO, CH;CH,COCH,CH3 F CH3CH,COCH3 C #1 3. PPM # 2Draw the H1 NMR spectra of ethylcyclopropane. Draw the chemical structure and predict the proton splitting and chemical shifts.
- This question relates to the1H-NMR spectrum of an alkane and two alkenes. How many proton environments are there in 2-methylbut-2-ene? How many proton environments are there in 1-bromo-4-chlorobutane? How many proton environments are there in trans-2-pentene What are the multiplicities of each proton environment in 2-methylbut-2-ene? What are the multiplicities of each proton environment in 1-bromo-4-chlorobutane? What are the multiplicities of each proton environment in trans-2-pentene?4. Give the structure of each of the following compounds. a) a six-carbon alkane whose proton NMR consists of 1 singlet. b) a six-carbon alkene whose proton NMR consists of 1 singlet c) a nine-carbon alkane whose proton nmr consists of 2 singlets.3) For the following questions draw the structure of the compound based off of the molecular formula and NMR that is given. a) CHa Draw the structure of the compound. 12H 8H CH PPM b) CioH12O2 Draw the structure of the compound. t 3H d, 2H d. 2H L 2H brs, 1H 12 PPM c) CH10O3 (IR stretches: strong signals at 1750 and 1730 cm") Don't worry about stereochemistry of the product. Draw the structure of the compound. d. 3H s, 1H t 3H 9. 2H q. 1H 10 6. PPM 2.