Molecular Ion Spectroscopy Problems Worksheet

Molecular Ion Spectroscopy Problems Worksheet

 
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Problem 14: (C6H11NO2) Molecular ion = 129 m/z 1084 cm-1 2248 cm-1 Problem 14: (C6H11NO2) 6H 2H, quartet 2H, triplet 1H, triplet 6 5 4 3 PPM 2 1 0 Problem #: ___________________________ Molecular Formula: _________________________ Degree of Unsaturation: ____________________ 1. Analysis of infrared (IR) spectrum: Observations (absorptions in cm-1) Inferences 2. Analysis of 13C-NMR spectrum: Observations Inferences 3. Analysis of proton-NMR spectrum: (Each signal must be analyzed to generate a possible fragment.) Observations Inferences 4. Final structure of the compound along with assignment of carbon and proton chemical shifts. FTIR NEAT 100 90 80 70 60 50 40 30 1614.1 20 1515.8 1035.6 1735.6 1249.6 10 3750 3500 3250 3000 2750 2500 2250 2000 1750 Wavenumbers (cm-1) © 2020, Sigma-Aldrich Co. ALL RIGHTS RESERVED 1500 1250 1172.5 1000 750 500 75



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