Spectroscopy Flashcards
1
Q
wavenumber for C=O
A
1650-1750cm-1
2
Q
cm-1 for nitrile
A
2200cm-1
3
Q
cm-1 for N-H
A
3200-3500 one sharp peak
4
Q
NH2 cm-1
A
3200-3500 two sharp peaks
5
Q
C-H cm-1
A
big pointy peaks around 3000cm-1
6
Q
NO2 cm-1
A
vampire teeth peaks at 1300-1400 and 1500-1600
7
Q
OH cm-1
A
3200-3300 broad peak
8
Q
COOH cm-1
A
on top of 3000cm-1
9
Q
Purpose of IR spectroscopy
A
identify functional groups (NOTE: if O or N is present)
10
Q
CNMR for aldehydes and ketons
A
> 200 ppm
11
Q
CNMR for esters, cacid, and amides
A
160-180ppm
12
Q
TMS
A
0ppm
13
Q
HNMR for benzylic
A
6-8 ppm
14
Q
HNMR for aldehyde and phenol
A
10 ppm
15
Q
HNMR c-acid and amide H’s
A
12-14
