## MIT 5.80 Small-Molecule Spectroscopy and Dynamics

recorded by: Massachusetts Institute of Technology, MIT

released under terms of: Creative Commons Attribution Non-Commercial Share Alike (CC-BY-NC-SA)

released under terms of: Creative Commons Attribution Non-Commercial Share Alike (CC-BY-NC-SA)

The goal of this course is to illustrate the spectroscopy of small molecules in the gas phase: quantum mechanical effective Hamiltonian models for rotational, vibrational, and electronic structure; transition selection rules and relative intensities; diagnostic patterns and experimental methods for the assignment of non-textbook spectra; breakdown of the Born-Oppenheimer approximation (spectroscopic perturbations); the stationary phase approximation; nondegenerate and quasidegenerate perturbation theory (van Vleck transformation); qualitative molecular orbital theory (Walsh diagrams); the notation of atomic and molecular spectroscopy.

**Course Homepage:** 5.80 Small-Molecule Spectroscopy and Dynamics

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