Spectroscopy Flashcards
alkane absorption peak
2800-3000
1200
alkene absorption peak
3080-3140
1645
alkyne absorption peak
3300
2200
aromatic absorption peak
2900-3100
1475-1625
alcohol absorption peak
3100-3500 broad
ether absorption peak
1050-1150
aldehyde absorption peak
2700-2900
1700-1750
fangs
ketone absorption peak
1700-1750
CA absorption peak
1700-1750
2800-3200 (broad)
amines absorption peak
3100-3500 (sharp)
How to read HNMR
the further down the more deshielded the proton meaning the more contact it has to EWGs
the # of peaks -1 is how many adjacent Hs the protons represented under a particular peak are near
the area ratios represent the ratio of hydrogens under each peak relative to each other
position on the spectrum can also indicate TYPE of proton
HNMR alkyl group range
0-3 ppm
HNMR alkyne group range
2-3 ppm
HNMR alkene group range
4.6-6 ppm
HNMR aromatic group range
6-8.5 ppm