Modern analytical techniques
Modern techniques of analysis have revolutionised the determination of the structures of organic molecules.
At A level four techniques are covered:
- thin-layer chromatography to purify compounds but can also be used to identify compounds
- mass spectrometry gives the Mr of a compound directly and high resolution mass spectrometry can also identify a compound directly from its accurate mass
- infra red spectroscopy allows rapid identification of organic functional groups
- nuclear magnet resonance spectroscopy (NMR) , both 13C and 1H, allows the molecular framework of a molecule to be deduced.
Mass spectrometry and infra red spectrosopy are normally studied in year one, whilst chromatography and NMR spectroscopy are studied in year two.
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