Infrared spectroscopy provides information about the structure of molecules from the absorbance of infrared light leading to bond vibrations. The acquisition of IR spectra is covered on the instrumentation pages with this section covering the interpretation of results. 

There are a number of types of IR data collection listed below. There are some differences in the interpretation of data from the different routes and the information that can be obtained from each method. The more common routes have more detailed pages covering the interpretation of data collected with the method.

ATR of solids or liquids

This

Transmission measurement of liquid or thin film between salt discs

This

Nujol mull transmission IR

This

Solution phase transmission IR

This

Gas phase transmission IR

This