Techniques of Vibrational Spectroscopy
To analyse the vibrational spectrum of a molecule fully usually requires the application of two techniques – infrared and Raman spectroscopies. This chapter will briefly review the background to these techniques, with particular emphasis on how they relate to the analysis of atomic motion using group theory. It will not provide a detailed treatment of either the background or the experimental methodology surrounding these two forms of spectroscopy, as these are available though specialist texts.*
4.1 GENERAL CONSIDERATIONS
The vibration of a bond connecting two atoms can be modelled by considering two spheres of mass m1 and m2 joined by a spring whose strength is measured by a force constant, k; the ...