C We have to solve the time independent problem H o  o = E o  o Harry Kroto 2004

Atoms Basically only electronic transitions >10000 cm -1

Atoms Molecules Basically only electronic transitions >10000 cm -1

Atoms Molecules Basically only electronic transitions >10000 cm -1 electronic transitions E > cm -1

Atoms Molecules Basically only electronic transitions >10000 cm -1 electronic transitions E > cm -1 Vibrational transitions E = cm -1

Atoms Molecules Basically only electronic transitions >10000 cm -1 electronic transitions E > cm -1 Vibrational transitions E = cm -1 Rotational transitions E = 0.1 – 100 cm -1

electronic transitions E > cm -1 Harry Kroto 2004 Molecules

electronic transitions E > cm -1 Harry Kroto 2004 Vibrational transitions E = cm -1 Molecules

Vibrations

electronic transitions E > cm -1 Harry Kroto 2004 Vibrational transitions E = cm -1 Molecules Rotational transitions E = 0.1 – 100 cm -1

Rotational motion of a linear molecule HCCCCCNHCCCCCN

Harry Kroto 2004