Combined techniques problems L.O.:  Analyse absorptions in an infrared spectrum to identify the presence of functional groups in an organic compound.  Analyse molecular ion peaks and fragmentation peaks in a mass spectrum to identify parts of an organic structures.  Combine evidence from NMR, IR and mass spectra to deduce organic structures.

A mass spectrum

An IR spectrum

An NMR spectrum

IR spectrum, mass spectrum and proton NMR spectrum for an unknown compound

Suggested structure for the unknown compound