Infrared Spectroscopy

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Chapter 15. Infrared Spectroscopy Sherman Hsu, Separation Sciences Research and Product Development Mallinckrodt, Inc. Mallinckrodt Baker Division Summary General Uses Identification of all types of organic and many types of inorganic compounds Determination of functional groups in organic materials Determination of the molecular composition of surfaces Identification of chromatographic effluents Quantitative determination of compounds in mixtures Nondestructive method Determination of molecular conformation (structural isomers) and stereochemistry (geometri- cal isomers). Determination of molecular orientation (polymers and solutions). Common Applications Identification of compounds by matching spectrum of unknown compound with reference spectrum (fingerprinting).

• Raman spectroscopy provides complementary information on molecular vibration. (Some vi-brational modes of motion are IR-inactive but Raman-active and vice versa.) It also facilitates analysis of aqueous samples. Cell window material may be regular glass. Introduction

  Spectroscopy, Raman, Raman spectroscopy