IR peaks

M-H single bond stretches

4000 to 2500

triple bond stretches

2500 to 2000

double bond

2000 to 1500

single bond

1500 to 1000

OH

OH (carboxylic acid)

primary amine (greater than C-H stretch)

secondary amine (one peak after 3000)

amide vs amine

amide further down at 3350-3500, more rounded, (same patter for primary and secondary)

terminal alkyne, peak past 3000, normal C-H at 3000

nitrile, pointy peak after 2000

aldehyde peaks, 2700 and 2800

alkyne, weak peak around 2100

CO double bond, rounded, peak around 1700

CC double bond, pointy, peak around 1600

aromati overtones, little peaks around 1665 to 2000

aromatic with 1 peak around 750

ortho (position 1 and 2)

aromatic with 2 peaks around 780 and 880

meta (position 1 and 3)

aromatic 1 peak at 830

para (position 1 and 4)

aromatic with 2 peaks around 700 and 750

mono