Lecture 32 - Measuring Bond Energies: Guest Lecture by Prof. G. Barney Ellison. Spectroscopic determination of bond dissociation energies is relatively straightforward for many diatomic molecules,
but for polyatomic molecules it requires merging the results from a variety of challenging experiments. Professor Ellison describes how such techniques as flowing-afterglow mass spectroscopy and negative-ion
photoelectron spectroscopy together with data on free-radical kinetics and heats of formation have allowed precise determination of the O-H, C-H, and C-O bonds in methanol and other compounds. Interpreting these
reliable data provides new insight into the nature of chemical bonding and "resonance."
(from oyc.yale.edu)
Lecture 32 - Measuring Bond Energies: Guest Lecture by Prof. G. Barney Ellison
Time
Lecture Chapters
[00:00:00]
1. Diatomic Bond Dissociation Energy from Spectroscopy
[00:01:28]
2. O-H BDE from Acidity in the Flowing Afterglow
[00:12:35]
3. C-H BDE from Radical Equilibrium
[00:18:34]
4. C-O BDE from Radical Heats of Formation; Potential Errors
[00:23:20]
5. Interpreting BDEs
[00:35:43]
6. Questions: Hot Bands and Resonance Stabilization