3400cm-1

1700cm-1

2800cm-1

1200cm-1

IR spectroscopy is used to determine the frequency of vibrations between atoms

The fingerprint region is most easily used to determine the functional groups in the molecule

IR spectroscopy is used to determine the shape of the carbon backbone

IR spectroscopy can be used to easily determine molecular mass

1700cm-1

1000cm-1

2800cm-1

The peak location will vary depending on the compound being analyzed.

Alcohol

Nitrile

Ester

Ketone

Aldehyde

When the infrared light frequency matches the frequency of bond vibration in a molecule, a peak is recorded on the spectrum.

Functional groups can be identified by looking in the fingerprint region of the spectrum.

IR spectroscopy is useful in determining the size and shape of a compound's carbon skeleton.

An IR spectrometer shines infrared light on a compound and records the positions where the light is blocked by the compound. This results in the spectrum's peaks.

Dipole moments between atoms

The number of protons in a nucleus

The movement of electrons to higher energy levels

The overall molecular weight of the molecule

Peak

Peak

Peak

All the peaks have the same transmittance

Peaks and