CHEM 125b - Lecture 4 - Electronegativity, Bond Strength, Electrostatics, and Non-Bonded Interactions

Lecture 4 - Electronegativity, Bond Strength, Electrostatics, and Non-Bonded Interactions

Overview

A student provides insight on fractional-order rate laws. Bonds involving atoms with lone-pair electrons are weakened by electron-pair repulsion. Electronegativity differences between atoms make ionic dissociation (heterolysis) easier and radical dissociation (homolysis) harder, although Pauling’s definition of electronegativity makes the logic of the latter effect somewhat circular. The course transitions from free-radical reactions to ionic reactions by discussing solvent properties, in particular the electrostatic properties of alkyl halides and alkanes.

Resources

Professor McBride's website resource for CHEM 125b (Spring 2011)

https://webspace.yale.edu/chem125/

This website may include third-party materials pertaining to relevant topics, provided for the user's convenience. Yale does not control or take responsibility for the content of any off-site pages or linked sites.

Course Media

Transcript

html

Audio

mp3

Low Bandwidth Video

mov [100MB]

High Bandwidth Video

mov [500MB]