L1 /
4
CH1012
IR SPECTROSCOPY
· Vibrational IR region of the EM spectrum is with l in the range: 2.5 mm to 25 mm (m =10-6)
• a wavenumber
scale is usually used in IR spectroscopy
4000
cm-1 to 400 cm-1
Infrared (IR) Spectroscopy
¯
n = 1 / l cm
= cm-1
this gives a range:
