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CHEM 125A: FRESHMAN ORGANIC CHEMISTRY II - Lecture 32 - Professor J. Michael McBride

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."

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