IR Stretching Frequencies

TRICK!!!!!!!!!!!!!!!

***"CARBOXYLIC ACID" group is in same range as O-H but even BROADER!! (3500-2500)

Trends:

3600 - 2700 cm-1	X-H
2700 - 1900 cm-1	X=Y
1900 - 1500 cm-1	X=Y
1500 - 500 cm-1	X-Y

**Add AROMATIC ranges:

Aromatic C-H Stretch Aromatic C-H Bending Aromatic C=C Bending

~3030 (v) 860 - 680 (s) 1700 - 1500 (m,m)

1) More thorough TABLE: http://www.chem.ucla.edu/~webspectra/irtable.html

2) Explanation: http://www.chem.ucla.edu/~webspectra/irintro.html

3) Practice Problems: http://www.chem.ucla.edu/~webspectra/