Different enantiomers from the following pairs are to be identified. Concept introduction: R and S configuration is to be assigned to the following molecules and then different pairs of enantiomers is to be identified.

Question

How would you use infrared spectroscopy to distinguish between the following pairs of constitutional isomers? (a) CH3C=CCH3 || and CH3CH2C=CH (b) CH3CCH=CHCH3 and CH3CCH2CH=CH2 Problem 12-41 The mass spectrum (a) and the infrared spectrum (b) of an unknown hydrocarbon are shown. Propose as many structures as you can. (a) 100 Relative abundance (%) 80 60 60 40 200 20 (b) 100 Transmittance (%) 10 20 20 80- 60- 40- 20 40 60 80 100 120 140 m/z 500 4000 3500 3000 2500 2000 1500 Wavenumber (cm-1) 1000

Answer 1

Question

Chapter 5.SE, Problem 37AP

Interpretation Introduction

Interpretation:

Different enantiomers from the following pairs are to be identified.

Concept introduction:

R and S configuration is to be assigned to the following molecules and then different pairs of enantiomers is to be identified.

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