12. Structure Determination: Mass Spectrometry and Infrared Spectroscopy. Based on McMurry’s Organic Chemistry , 7 th edition. Determining the Structure of an Organic Compound.
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12. Structure Determination: Mass Spectrometry and Infrared Spectroscopy
McMurry’sOrganic Chemistry, 7th edition
Hexane (m/z = 86 for parent) has peaks at m/z = 71, 57, 43, 29
4000-2500 cm-1 N-H, C-H, O-H (stretching)
3300-3600 N-H, O-H
2500-2000 cm-1 CºC and C º N (stretching)
2000-1500 cm-1 double bonds (stretching)
C=C 1640-1680 cm-1
Below 1500 cm-1 “fingerprint” region
C-H, C-C, C=C, C º C have characteristic peaks