Question

s and give the m 0~시 2. How could you distinguish the following pairs of isomeric compounds using IR and MS? For some pairs- one of these spectral techniques may be different enough to distinguish the compounds. and (b) and 3. Analyne the IR and MS spectra below to predict a possible structure for each compound. Label the major peaks or (a) C,110 1500 1000 (b) CsHro 3000 2000 1500 1000 m/z ollowing problem is to ys ar wwight of the molecule and clues from similar to question 3, encest dhe molecular formd the IR to figure out the molecular for not peowidod. Yow wis have to use the molecule. 3000 2000 S. Propose a structure fora compound, with molecular fomula Cils the fllovngperospe datas IR: 3400 cm1 'H NMR: 0.98 (triplet, 6H) 1.1 δ (singlet, lH, exchanges with D O), 1.38 (s tet 411), 14 δ (quintet 411), 265( 15C NMR: 13.7, 20.5, 30.4, 49.2 4H) 6. Propose a structure for a compound, with molecular formula CHioO that fits the following spectroscopic data: IR: 3400 cm'(broad), 3250 cm (sharp), 2150 cm 'H NNIR: 1.0 δ (triplet, 3 H), l 5 δ (singlet, 3H), 1.6 δ (quartet, 2H), 205 (singlet, lH), 2.5 δ (single, H) BC NMR: 4.1, 26, 35, 67.6, 69.4 8. Like question 4, you are given the following data for a compound but no molecular forsulaUs MS, IR, and NMR to propose a structure. the chuck o t 4000 3000 2000 1500 1000 500 Waje pedka 113 125 5O m/z

Answer 1

from above value of IR and MS both compounds clearly distinguish.Isopropyl cyclohexane shows very high values than other compound and m/z and molecular mass of both the compounds are different.

ds 12 3000-2g oo cm A7 S FR 2. 、 ナ cin mass an e Top peal a 3S5 83 ㄚ ㄅ M: 1 26 3 cmVer less Te p peaks af 12-15 - 167 (m 3, ,, 5 2-2